Holtek BS86DH12C User manual

High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
Revision: V1.00 Date: October 26, 2018

Rev. 1.00 2 October 26, 2018 Rev. 1.00 3 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Table of Contents
Features................................................................................................................. 7
CPU Features ...............................................................................................................................7
Peripheral Features.......................................................................................................................7
General Description.............................................................................................. 8
Block Diagram....................................................................................................... 9
Pin Assignment..................................................................................................... 9
Pin Descriptions ................................................................................................. 11
Absolute Maximum Ratings............................................................................... 14
D.C. Electrical Characteristics........................................................................... 15
Operating Voltage Characteristics...............................................................................................15
Operating Current Characteristics...............................................................................................15
Standby Current Characteristics .................................................................................................16
A.C. Characteristics............................................................................................ 16
High Speed Internal Oscillator – HIRC – Frequency Accuracy ................................................... 16
Internal Low Speed Oscillator Characteristics – LIRC ................................................................17
External Low Speed Oscillator Characteristics – LXT.................................................................17
Operating Frequency Characteristic Curves ...............................................................................17
System Start Up Time Characteristics ........................................................................................18
Input/Output Characteristics ............................................................................. 19
Memory Characteristics ..................................................................................... 19
LVD/LVR Electrical Characteristics................................................................... 20
A/D Converter Electrical Characteristics.......................................................... 20
Internal Reference Voltage Characteristics...................................................... 21
High Voltage I/O Electrical Characteristics ...................................................... 21
Voltage Detector Electrical Characteristics .................................................................................21
High Voltage I/O Other Electrical Characteristics........................................................................22
Low Dropout Regulator Electrical Characteristics.......................................... 22
OCP Electrical Characteristics .......................................................................... 24
OVP Electrical Characteristics .......................................................................... 24
Power-on Reset Characteristics........................................................................ 25
System Architecture........................................................................................... 25
Clocking and Pipelining...............................................................................................................25
Program Counter.........................................................................................................................26
Stack ...........................................................................................................................................27
Arithmetic and Logic Unit – ALU .................................................................................................27
Flash Program Memory...................................................................................... 28
Structure......................................................................................................................................28
Special Vectors ...........................................................................................................................28

Rev. 1.00 2 October 26, 2018 Rev. 1.00 3 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Look-up Table..............................................................................................................................28
Table Program Example..............................................................................................................29
In Circuit Programming – ICP .....................................................................................................30
On-Chip Debug Support – OCDS ...............................................................................................31
Data Memory ....................................................................................................... 31
Structure......................................................................................................................................31
Data Memory Addressing............................................................................................................32
General Purpose Data Memory ..................................................................................................32
Special Purpose Data Memory ...................................................................................................32
Special Function Register Description............................................................. 34
Indirect Addressing Registers – IAR0, IAR1, IAR2 .....................................................................34
Memory Pointers – MP0, MP1L/MP1H, MP2L/MP2H.................................................................34
Accumulator – ACC ....................................................................................................................35
Program Counter Low Register – PCL .......................................................................................36
Look-up Table Registers – TBLP, TBHP, TBLH ..........................................................................36
Status Register – STATUS .........................................................................................................36
EEPROM Data Memory....................................................................................... 38
EEPROM Data Memory Structure ..............................................................................................38
EEPROM Registers ....................................................................................................................38
Reading Data from the EEPROM ...............................................................................................39
Writing Data to the EEPROM......................................................................................................40
EEPROM Interrupt ......................................................................................................................40
Programming Considerations......................................................................................................40
Oscillators ........................................................................................................... 42
Oscillator Overview .....................................................................................................................42
System Clock Congurations......................................................................................................42
Internal High Speed RC Oscillator – HIRC .................................................................................43
Internal 32kHz Oscillator – LIRC.................................................................................................43
External 32.768 kHz Crystal Oscillator – LXT ............................................................................. 43
Operating Modes and System Clocks .............................................................. 45
System Clocks ............................................................................................................................45
System Operation Modes............................................................................................................46
Control Registers ........................................................................................................................47
Operating Mode Switching ..........................................................................................................49
Standby Current Considerations .................................................................................................53
Wake-up......................................................................................................................................53
Watchdog Timer.................................................................................................. 54
Watchdog Timer Clock Source....................................................................................................54
Watchdog Timer Control Register ...............................................................................................54
Watchdog Timer Operation .........................................................................................................55
Reset and Initialisation....................................................................................... 56
Reset Functions ..........................................................................................................................56
Reset Initial Conditions ...............................................................................................................59

Rev. 1.00 4 October 26, 2018 Rev. 1.00 5 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Input/Output Ports .............................................................................................. 63
Pull-high Resistors ......................................................................................................................63
Port A Wake-up ...........................................................................................................................64
I/O Port Control Registers ...........................................................................................................64
I/O Port Source Current Selection...............................................................................................64
I/O Port Sink Current Selection ...................................................................................................66
Pin-shared Functions ..................................................................................................................68
I/O Pin Structures........................................................................................................................72
Programming Considerations......................................................................................................72
High Voltage I/O Port .......................................................................................... 73
High Voltage I/O Registers..........................................................................................................74
Voltage Detector..........................................................................................................................75
Short-circuit Protection Function .................................................................................................76
Low Dropout Regulator – LDO .......................................................................... 77
Timer Modules – TM ........................................................................................... 77
Introduction .................................................................................................................................77
TM Operation ..............................................................................................................................77
TM Clock Source.........................................................................................................................78
TM Interrupts...............................................................................................................................78
TM External Pins.........................................................................................................................78
Programming Considerations......................................................................................................79
Compact Type TM – CTM ................................................................................... 80
Compact Type TM Operation ......................................................................................................80
Compact Type TM Register Description......................................................................................81
Compact Type TM Operation Modes ..........................................................................................84
Periodic Type TM – PTM..................................................................................... 90
Periodic TM Operation ................................................................................................................90
Periodic Type TM Register Description .......................................................................................90
Periodic Type TM Operation Modes............................................................................................95
Analog to Digital Converter ............................................................................. 104
A/D Overview ............................................................................................................................104
A/D Converter Register Description ..........................................................................................105
A/D Converter Reference Voltage.............................................................................................107
A/D Converter Input Signals......................................................................................................108
A/D Converter Operation...........................................................................................................108
Conversion Rate and Timing Diagram ......................................................................................109
Summary of A/D Conversion Steps........................................................................................... 110
Programming Considerations.................................................................................................... 111
A/D Transfer Function ............................................................................................................... 111
A/D Programming Examples..................................................................................................... 112
Touch Key Function ......................................................................................... 114
Touch Key Structure.................................................................................................................. 114
Touch Key Register Denition................................................................................................... 114

Rev. 1.00 4 October 26, 2018 Rev. 1.00 5 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Touch Key Interrupt ...................................................................................................................120
Programming Considerations....................................................................................................120
Over Current Protection – OCP ....................................................................... 121
Over Current Protection Operation ...........................................................................................121
Over Current Protection Registers ............................................................................................122
Input Voltage Range..................................................................................................................124
Input Offset Calibration .............................................................................................................125
Over Voltage Protection – OVP........................................................................ 126
Over Voltage Protection Operation ...........................................................................................126
Over Voltage Protection Registers ............................................................................................127
Comparator Input Offset Cancellation ......................................................................................128
I2C Interface ....................................................................................................... 129
I2C Interface Operation..............................................................................................................129
I2C Registers .............................................................................................................................131
I2C Bus Communication ............................................................................................................133
I2C Time-out Control..................................................................................................................137
UART Interface.................................................................................................. 138
UART External Pins ..................................................................................................................139
UART Data Transfer Scheme....................................................................................................139
UART Status and Control Registers..........................................................................................139
Baud Rate Generator ................................................................................................................145
UART Setup and Control...........................................................................................................145
UART Transmitter......................................................................................................................146
UART Receiver .........................................................................................................................148
Managing Receiver Errors ........................................................................................................149
UART Interrupt Structure...........................................................................................................150
UART Power Down and Wake-up.............................................................................................151
Low Voltage Detector – LVD ............................................................................ 152
LVD Register .............................................................................................................................152
LVD Operation...........................................................................................................................153
Interrupts ........................................................................................................... 154
Interrupt Registers.....................................................................................................................154
Interrupt Operation ....................................................................................................................158
External Interrupt.......................................................................................................................159
Touch Key Module Interrupt ......................................................................................................160
Time Base Interrupt...................................................................................................................160
Multi-function Interrupts.............................................................................................................161
I2C Interrupt ...............................................................................................................................161
UART Transfer Interrupt ............................................................................................................162
LVD Interrupt .............................................................................................................................162
A/D Converter Interrupt .............................................................................................................162
EEPROM Interrupt ....................................................................................................................162
Over Voltage Protection Interrupt..............................................................................................163

Rev. 1.00 6 October 26, 2018 Rev. 1.00 7 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Over Current Protection Interrupt..............................................................................................163
High Voltage Short Circuit Interrupt...........................................................................................163
TM Interrupts.............................................................................................................................163
Interrupt Wake-up Function.......................................................................................................163
Programming Considerations....................................................................................................164
Conguration Options...................................................................................... 164
Application Circuits.......................................................................................... 165
Instruction Set................................................................................................... 166
Introduction ...............................................................................................................................166
Instruction Timing ......................................................................................................................166
Moving and Transferring Data...................................................................................................166
Arithmetic Operations................................................................................................................166
Logical and Rotate Operation ...................................................................................................167
Branches and Control Transfer .................................................................................................167
Bit Operations ...........................................................................................................................167
Table Read Operations .............................................................................................................167
Other Operations.......................................................................................................................167
Instruction Set Summary ................................................................................. 168
Table Conventions.....................................................................................................................168
Extended Instruction Set ...........................................................................................................170
Instruction Denition........................................................................................ 172
Extended Instruction Denition .................................................................................................181
Package Information ........................................................................................ 188
20-pin SOP (300mil) Outline Dimensions .................................................................................189
28-pin SOP (300mil) Outline Dimensions .................................................................................190
44-pin LQFP (10mm×10mm) (FP2.0mm) Outline Dimensions .................................................191

Rev. 1.00 6 October 26, 2018 Rev. 1.00 7 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Features
CPU Features
• Operating voltage
♦fSYS=8/12/16MHz, using internal LDO: VDD=5V (Typ.)
♦High Voltage Driver: VCC=7V~10V
• Up to 0.25μs instruction cycle with 16MHz system clock at VDD=5V
• Power down and wake-up functions to reduce power consumption
• Oscillator types
♦Internal High Speed 8/12/16MHz RC – HIRC
♦Internal Low Speed 32kHz RC – LIRC
♦External Low Speed 32.768kHz Crystal – LXT
• Multi-mode operation: FAST, SLOW, IDLE and SLEEP
• Fully integrated internal oscillators require no external components
• All instructions executed in 1~3 instruction cycles
• Table read instructions
• 115 powerful instructions
• 8-level subroutine nesting
• Bit manipulation instruction
Peripheral Features
• Flash Program Memory: 8K×16
• Data Memory: 512×8
• True EEPROM Memory: 64×8
• 12 touch key functions – fully integrated without requiring external components
• Watchdog Timer function
• 22 bidirectional I/O lines
• 6 bidirectional High Voltage I/O lines with short circuit protection function
• Programmable I/O port source current and sink current for LED driving applications
• Single external interrupt line shared with I/O pin
• Multiple Timer Modules for time measurement, input capture, compare match output or PWM
output or single pulse output function
• Single Time-Base function for generation of xed time interrupt signals
• 8 external channels 12-bit resolution A/D converter with internal reference voltage VBG
• Over Current Protection function – OCP
• Over Voltage Protection function – OVP
• Internal 5V LDO with driving current of up to 500mA, providing power supply for MCU and
external components
• I2C interface
• Fully-duplex Universal Asynchronous Receiver and Transmitter Interface – UART
• Low voltage reset function

Rev. 1.00 8 October 26, 2018 Rev. 1.00 9 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
• Low voltage detect function
• Package types: 20/28-pin SOP, 44-pin LQFP
General Description
The device is a Flash Memory type 8-bit high performance RISC architecture microcontroller with
fully integrated touch key functions. With all touch key functions provided internally and with the
convenience of Flash Memory multi-programming features, the device has all the features to offer
designers a reliable and easy means of implementing touch keys within their products applications.
The touch key functions are fully integrated, completely eliminating the need for external
components. In addition to the Flash program memory, other memory includes an area of RAM
Data Memory as well as an area of true EEPROM memory for storage of non-volatile data such as
serial numbers, calibration data etc. Analog feature includes a multi-channel 12-bit A/D converter
and an internal LDO for power supply. Protective features such as an internal Watchdog Timer, Low
Voltage Reset, Low Voltage Detector, Over Current Protection and Over Voltage Protection coupled
with excellent noise immunity and ESD protection ensure that reliable operation is maintained in
hostile electrical environments.
A full choice of external low, internal high and low speed oscillators are provided including fully
integrated system oscillators which require no external components for its implementation. The
ability to operate and switch dynamically between a range of operating modes using different
clock sources gives users the ability to optimise microcontroller operation and minimise power
consumption. Easy communication with the outside world is provided using the internal I2C and
UART interfaces, while the inclusion of exible I/O programming features, Time-Base function,
Timer Modules and many other features further enhance device functionality and exibility.
This device contains programmable I/O port source current and sink current functions which are
used to implement LED driving function. The High Voltage I/O function specic to high voltage and
high current applications is also fully integrated within the device.
The touch key device will find excellent use in a huge range of modern Touch Key product
applications such as sensor signal processing, household appliances, health care products, industrial
control, consumer products, subsystem control to name but a few.

Rev. 1.00 8 October 26, 2018 Rev. 1.00 9 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Block Diagram
Bus
: Bus Entry : Pin-Shared Node
Touch Key Module 2
Touch Key Module 1
Pin-Shared
With Port A, B & C
KEY1~KEY12
Touch Key Function
Analog Peripherals
AVDD
AN0~AN7
Pin-Shared
With Port A & B
VREF
VBG
Analog to Digital Converter
Pin-Shared
With Port A
12-bit
ADC
Over Current
Protection Circuit
OCPI
VCC1O
VCC2O
Over Voltage
Protection Circuit Pin-Shared
With Port A, B & C
OVPI0
OVPI1
VLDO
HVSS
VCC1
VCC2
LDO
(5V)
HV I/O
PD0~PD5 Port D
Driver High Voltage Analog Peripherals
VSS/AVSS/
IOVSS/HVSS
VDD/AVDD/
VLDO VDD
VSS
Timers
I/O
I2C
UART
Port A
Driver
Pin-Shared
Function
PA0~PA7
PB0~PB7
Port B
Driver
PC0~PC5
Port C
Driver
MUX
Clock System
HT8 MCU Core
Time Base
Interrupt
Controller
INT
Pin-Shared
With Port C
Reset
Circuit
Pin-Shared
With Port A
LIRC
32kHz
HIRC
8/12/16MHz
MUX
LXT
XT1
XT2
Stack
8-Level
RAM
512 × 8
ROM
8K × 16
Watchdog
Timer
EEPROM
64 × 8
LVR/LVD
OCPAO
VOCPAO
_
+
Pin-Shared
With Port A & B
8-bit
DAC
_
+
8-bit
DAC
OPA
Digital Peripherals
Touch Key Module 0
MUX
C to F
Circuit
Pin Assignment
BS86DH12C/BS86DHV12C
20 SOP-A
PD3 VCC2
PD2 VCC1
PD1 VDD/VLDO/AVDD
PD0 PA7/CTCK0/PTCK/PTP/XT2
PB0/RX/CTCK0/OCPI/KEY1 PA6/CTCK1/PTPI/CTP0/PTPB/XT1
PA4/AN0/KEY5
VSS/AVSS/IOVSS/HVSSPB1/TX/CTCK1/OVPI0/KEY2
PA2/TX/CTP1B/OCPI/ICPCK/OCDSCK
PA3/PTPI/SDA/VREF/KEY4 PA0/RX/CTP1/OCPVR/ICPDA/OCDSDA
PA1/PTCK/SCL/OVPI1/KEY3
PB3/SDA/AN7/KEY10
PA5/AN1/KEY6 PB2/SCL/AN6/KEY9
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10

Rev. 1.00 10 October 26, 2018 Rev. 1.00 11 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C/BS86DHV12C
28 SOP-A
PD1
PB2/SCL/AN6/KEY9
PB3/SDA/AN7/KEY10
PC0/PTP/OVPI0/KEY11
PA6/CTCK1/PTPI/CTP0/PTPB/XT1
PC2/CTP1/SCL/RX
VDD/VLDO/AVDD
VCC2
PA0/RX/CTP1/OCPVR/ICPDA/OCDSDA
PA2/TX/CTP1B/OCPI/ICPCK/OCDSCK
PC1/INT/PTPB/OVPI1/KEY12
PA5/AN1/KEY6
PA4/AN0/KEY5
PB0/RX/CTCK0/OCPI/KEY1
PB1/TX/CTCK1/OVPI0/KEY2
PA1/PTCK/SCL/OVPI1/KEY3
PA3/PTPI/SDA/VREF/KEY4
PB5/CTP0B/AN3/KEY8
PB4/CTP0/AN2/KEY7
PB6/CTP1/AN4/OCPAO
PB7/CTP1B/AN5/OVPCOUT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PD0
PD2
PD3
VCC1
PA7/CTCK0/PTCK/PTP/XT2
VSS/AVSS/IOVSS/HVSS
PC3/CTP0/SDA/TX
PA1/PTCK/SCL/OVPI1/KEY3
PB0/RX/CTCK0/OCPI/KEY1
PB1/TX/CTCK1/OVPI0/KEY2
PA3/PTPI/SDA/VREF/KEY4
PA4/AN0/KEY5
NC
NC
PB5/CTP0B/AN3/KEY8
NC
PB4/CTP0/AN2/KEY7
PA5/AN1/KEY6
PD0
VCC2
PD1 PD2
PD3
PD4
PD5
VCC1PB2/SCL/AN6/KEY9
PC5
PC4
PB7/CTP1B/AN5/OVPCOUT
PB6/CTP1/AN4/OCPAO
PC1/INT/PTPB/OVPI1/KEY12 PC0/PTP/OVPI0/KEY11 PB3/SDA/AN7/KEY10
PC3/CTP0/SDA/TX
PC2/CTP1/SCL/RX
PA2/TX/CTP1B/OCPI/ICPCK/OCDSCK
PA0/RX/CTP1/OCPVR/ICPDA/OCDSDA
PA6/CTCK1/PTPI/CTP0/PTPB/XT1
VDD/VLDO/AVDD
VSS/AVSS/IOVSS/HVSS
PA7/CTCK0/PTCK/PTP/XT2
NC NC NC
NC
NC
NC
NC NC NC
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19 20 21 22
23
24
25
26
27
28
29
30
31
32
33
3435363738394041424344
BS86DH12C/BS86DHV12C
44 LQFP-A
Note: 1. If the pin-shared pin functions have multiple outputs, the desired pin-shared function is determined by the
corresponding software control bits.
2. The OCDSDA and OCDSCK pins are supplied for the OCDS dedicated pins and as such only available
for the BS86DHV12C device which is the OCDS EV chip for the BS86DH12C device.
3. For less pin-count package types there will be unbonded pins which should be properly congured to
avoid unwanted current consumption resulting from floating input conditions. Refer to the “Standby
Current Considerations” and “Input/Output Ports” sections.

Rev. 1.00 10 October 26, 2018 Rev. 1.00 11 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Pin Descriptions
With the exception of the power pins, all pins on the device can be referenced by their Port name, e.g.
PA0, PA1 etc., which refer to the digital I/O function of the pins. However these Port pins are also
shared with other function such as the Touch Key function, Timer Module pins etc. The function of
each pin is listed in the following table, however the details behind how each pin is congured is
contained in other sections of the datasheet.
As the Pin Description table shows the situation for the package with the most pins, not all pins in
the table will be available on smaller package sizes.
Pin Name Function OPT I/T O/T Description
PA0/RX/CTP1/
OCPVR/ICPDA/
OCDSDA
PA0
PAPU
PAWU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
RX PAS0
IFS0 ST — UART data receive pin
CTP1 PAS0 — CMOS CTM1 output
OCPVR PAS0 AN — OCP D/A converter reference voltage input
ICPDA — ST CMOS ICP data/address
OCDSDA — ST CMOS OCDS data/address, for EV chip only
PA1/PTCK/SCL/
OVPI1/KEY3
PA1
PAPU
PAWU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
PTCK PAS0
IFS1 ST — PTM clock input
SCL PAS0
IFS0 ST NMOS I2C clock line
OVPI1 PAS0 AN — OVP input 1
KEY3 PAS0 NSI — Touch key input
PA2/TX/CTP1B/
OCPI/ICPCK/
OCDSCK
PA2
PAPU
PAWU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
TX PAS0 — CMOS UART data transmit pin
CTP1B PAS0 — CMOS CTM1 inverted output
OCPI PAS0 AN — OCP input
ICPCK — ST — ICP clock
OCDSCK — ST — OCDS clock, for EV chip only
PA3/PTPI/SDA/
VREF/KEY4
PA3
PAPU
PAWU
PAS0
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
PTPI PAS0
IFS1 ST — PTM capture input
SDA PAS0
IFS0 ST NMOS I2C data line
VREF PAS0 AN — A/D converter external input channel
KEY4 PAS0 NSI — Touch key input
PA4/AN0/KEY5
PA4
PAPU
PAWU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
AN0 PAS1 AN — A/D converter external input channel
KEY5 PAS1 NSI — Touch key input

Rev. 1.00 12 October 26, 2018 Rev. 1.00 13 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Pin Name Function OPT I/T O/T Description
PA5/AN1/KEY6
PA5
PAPU
PAWU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
AN1 PAS1 AN — A/D converter external input channel
KEY6 PAS1 NSI — Touch key input
PA6/CTCK1/PTPI/
CTP0/PTPB/XT1
PA6
PAPU
PAWU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
CTCK1 PAS1
IFS1 ST — CTM1 clock input
PTPI PAS1
IFS1 ST — PTM capture input
CTP0 PAS1 — CMOS CTM0 output
PTPB PAS1 — CMOS PTM inverted output
XT1 PAS1 LXT — LXT oscillator pin
PA7/CTCK0/PTCK/
PTP/XT2
PA7
PAPU
PAWU
PAS1
ST CMOS General purpose I/O. Register enabled pull-up and
wake-up
CTCK0 PAS1
IFS1 ST — CTM0 clock input
PTCK PAS1
IFS1 ST — PTM clock input
PTP PAS1 — CMOS PTM output
XT2 PAS1 — LXT LXT oscillator pin
PB0/RX/CTCK0/
OCPI/KEY1
PB0 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up
RX PBS0
IFS0 ST — UART data receive pin
CTCK0 PBS0
IFS1 ST — CTM0 clock input
OCPI PBS0 AN — OCP input
KEY1 PBS0 NSI — Touch key input
PB1/TX/CTCK1/
OVPI0/KEY2
PB1 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up
TX PBS0 — CMOS UART data transmit pin
CTCK1 PBS0
IFS1 ST — CTM1 clock input
OVPI0 PBS0 AN — OVP input 0
KEY2 PBS0 NSI — Touch key input
PB2/SCL/AN6/KEY9
PB2 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up
SCL PBS0
IFS0 ST NMOS I2C clock line
AN6 PBS0 AN — A/D converter external input channel
KEY9 PBS0 NSI — Touch key input
PB3/SDA/AN7/
KEY10
PB3 PBPU
PBS0 ST CMOS General purpose I/O. Register enabled pull-up
SDA PBS0
IFS0 ST NMOS I2C data line
AN7 PBS0 AN — A/D converter external input channel
KEY10 PBS0 NSI — Touch key input

Rev. 1.00 12 October 26, 2018 Rev. 1.00 13 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Pin Name Function OPT I/T O/T Description
PB4/CTP0/AN2/
KEY7
PB4 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up
CTP0 PBS1 — CMOS CTM0 output
AN2 PBS1 AN — A/D converter external input channel
KEY7 PBS1 NSI — Touch key input
PB5/CTP0B/AN3/
KEY8
PB5 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up
CTP0B PBS1 — CMOS CTM0 inverted output
AN3 PBS1 AN — A/D converter external input channel
KEY8 PBS1 NSI — Touch key input
PB6/CTP1/AN4/
OCPAO
PB6 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up
CTP1 PBS1 — CMOS CTM1 output
AN4 PBS1 AN — A/D converter external input channel
OCPAO PBS1 AN — OCP operational amplier output
PB7/CTP1B/AN5/
OVPCOUT
PB7 PBPU
PBS1 ST CMOS General purpose I/O. Register enabled pull-up
CTP1B PBS1 — CMOS CTM1 inverted output
AN5 PBS1 AN — A/D converter external input channel
OVPCOUT PBS1 — CMOS OVP comparator output
PC0/PTP/OVPI0/
KEY11
PC0 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up
PTP PCS0 — CMOS PTM output
OVPI0 PCS0 AN — OVP input 0
KEY11 PCS0 NSI — Touch key input
PC1/INT/PTPB/
OVPI1/KEY12
PC1 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up
INT
PCS0
INTC0
INTEG
ST — External interrupt input
PTPB PCS0 — CMOS PTM inverted output
OVPI1 PCS0 AN — OVP input 1
KEY12 PCS0 NSI — Touch key input
PC2/CTP1/SCL/RX
PC2 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up
CTP1 PCS0 — CMOS CTM1 output
SCL PCS0
IFS0 ST NMOS I2C clock line
RX PCS0
IFS0 ST — UART data receive pin
PC3/CTP0/SDA/TX
PC3 PCPU
PCS0 ST CMOS General purpose I/O. Register enabled pull-up
CTP0 PCS0 — CMOS CTM0 output
SDA PCS0
IFS0 ST NMOS I2C data line
TX PCS0 — CMOS UART data transmit pin
PC4~PC5 PC4~PC5 PCPU ST CMOS General purpose I/O. Register enabled pull-up
PD0~PD5 PD0~PD5 — ST CMOS High voltage I/O port
VDD/AVDD/VLDO
VDD — PWR — Digital positive power supply
AVDD — PWR — Analog positive power supply
VLDO — — PWR LDO output voltage

Rev. 1.00 14 October 26, 2018 Rev. 1.00 15 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Pin Name Function OPT I/T O/T Description
VSS/AVSS/IOVSS/
HVSS
VSS — PWR — Digital negative power supply, ground
AVSS — PWR — Analog negative power supply, ground
IOVSS — PWR — I/O port negative power supply, ground
HVSS — PWR — High voltage negative power supply, ground
VCC1 VCC1 — PWR — Provides high voltage positive power supply for
LDO input
VCC2 VCC2 — PWR — Provides high voltage positive power supply for
High Voltage I/O and Level Shifter
NC NC — — — Unused
Legend: I/T: Input type; O/T: Output type;
OPT: Optional by register selection;
PWR: Power; ST: Schmitt Trigger input;
CMOS: CMOS output; NMOS: NMOS output;
AN: Analog signal; NSI: Non-standard input;
LXT: Low frequency crystal oscillator.
Absolute Maximum Ratings
Supply Voltage (VCC)................................................................................................VSS-0.3V to 10.0V
Supply Voltage (VDD).........................................................................................VSS-0.3V to VSS+6.0V
High Voltage Input Voltage ............................................................................... VSS-0.3V to VCC+0.3V
Input Voltage ..................................................................................................... VSS-0.3V to VDD+0.3V
Storage Temperature..................................................................................................... -50°C to 125°C
Operating Temperature................................................................................................... -40°C to 85°C
High Voltage IOH Total.............................................................................................................. -150mA
IOH Total...................................................................................................................................... -80mA
High Voltage IOL Total ............................................................................................................... 150mA
IOL Total ....................................................................................................................................... 80mA
Total Power Dissipation ........................................................................................................... 500mW
Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute
Maximum Ratings” may cause substantial damage to this device. Functional operation of
this device at other conditions beyond those listed in the specification is not implied and
prolonged exposure to extreme conditions may affect device reliability.

Rev. 1.00 14 October 26, 2018 Rev. 1.00 15 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
D.C. Electrical Characteristics
For data in the following tables, note that factors such as oscillator type, operating voltage, operating
frequency, pin load conditions, temperature and program instruction type, can all exert an inuence
on the measured values.
Operating Voltage Characteristics
Ta=25°C
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD
Operating Voltage – HIRC
fSYS=fHIRC=8MHz 4.5 — 5.5
V
fSYS=fHIRC=12MHz 4.5 — 5.5
fSYS=fHIRC=16MHz 4.5 — 5.5
Operating Voltage – LIRC fSYS=fLIRC=32kHz 4.5 — 5.5 V
Operating Voltage – LXT fSYS=fLXT=32.768kHz 4.5 — 5.5 V
Operating Current Characteristics
Ta=25°C
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Conditions
IDD
SLOW Mode – LIRC 5V fSYS=fLIRC=32kHz, LDO current
consumption included — 180 200 μA
SLOW Mode – LXT 5V fSYS=fLXT=32768Hz, LDO current
consumption included — 180 200 μA
FAST Mode – HIRC 5V
fSYS=fHIRC=8MHz, LDO current
consumption included — 1.6 2.4
mA
fSYS=fHIRC=12MHz, LDO current
consumption included — 2.4 3.6
fSYS=fHIRC=16MHz, LDO current
consumption included — 6.0 9.0
Note: When using the characteristic table data, the following notes should be taken into consideration:
1. Any digital input is set in a non-oating condition.
2. All measurements are taken under conditions of no load and with all peripherals in an off state.
3. There are no DC current paths.
4. All Operating Current values are measured using a continuous NOP instruction program loop.

Rev. 1.00 16 October 26, 2018 Rev. 1.00 17 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Standby Current Characteristics
Ta=25°C, unless otherwise specied
Symbol Parameter Test Conditions Min. Typ. Max. Max.
@85°C Unit
VDD Conditions
ISTB
SLEEP Mode 5V WDT on, LDO current
consumption included — 160 200 210 μA
IDLE0 Mode – LIRC 5V fSUB on, LDO current
consumption included — 165 200 215 μA
IDLE0 Mode – LXT 5V fSUB on, LDO current
consumption included — 165 200 215 μA
IDLE1 Mode – HIRC 5V
fSUB on, fSYS=8MHz, LDO
current consumption included — 1.0 1.8 2.0
mA
fSUB on, fSYS=12MHz, LDO
current consumption included — 1.5 2.6 3.0
fSUB on, fSYS=16MHz, LDO
current consumption included — 2.0 3.5 4.0
Note: When using the characteristic table data, the following notes should be taken into consideration:
1. Any digital input is set in a non-oating condition.
2. All measurements are taken under conditions of no load and with all peripherals in an off state.
3. There are no DC current paths.
4. All Standby Current values are taken after a HALT instruction executed thus stopping all instruction
execution.
A.C. Characteristics
For data in the following tables, note that factors such as oscillator type, operating voltage, operating
frequency and temperature etc., can all exert an inuence on the measured values.
High Speed Internal Oscillator – HIRC – Frequency Accuracy
During the program writing operation the writer will trim the HIRC oscillator at a user selected
HIRC frequency and user selected voltage of 5V.
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Temp.
fHIRC
8MHz Writer Trimmed HIRC Frequency
5V 25°C -1% 8 +1%
MHz
-40°C~85°C -2% 8 +2%
4.5V~5.5V 25°C -2.5% 8 +2.5%
-40°C~85°C -3% 8 +3%
12MHz Writer Trimmed HIRC Frequency
5V 25°C -1% 12 +1%
MHz
-40°C~85°C -2% 12 +2%
4.5V~5.5V 25°C -2.5% 12 +2.5%
-40°C~85°C -3% 12 +3%
16MHz Writer Trimmed HIRC Frequency
5V 25°C -1% 16 +1%
MHz
-40°C~85°C -2% 16 +2%
4.5V~5.5V 25°C -2.5% 16 +2.5%
-40°C~85°C -3% 16 +3%
Note: 1. The 5V values for VDD are provided as this is the xed voltage at which the HIRC frequency is trimmed
by the writer.
2. The row below the 5V trim voltage row is provided to show the values for the full VDD range operating
voltage. It is recommended that the trim voltage is xed at 5V for application voltage ranges from 3.3V
to 5.5V.

Rev. 1.00 16 October 26, 2018 Rev. 1.00 17 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
3. The minimum and maximum tolerance values provided in the table are only for the frequency at which
the writer trims the HIRC oscillator. After trimming at this chosen specific frequency any change in
HIRC oscillator frequency using the oscillator register control bits by the application program will give a
frequency tolerance to within ±20%.
Internal Low Speed Oscillator Characteristics – LIRC
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Temp.
fLIRC LIRC Frequency 4.5V~5.5V 25°C -10% 32 +10% kHz
-40°C~85°C -50% 32 +60%
tSTART LIRC Start Up Time — 25°C — — 500 μs
External Low Speed Oscillator Characteristics – LXT
Ta=25°C
C1=C2=10pF, RP=10MΩ(C1, C2 and RPare external components), CL=7pF, ESR=30kΩ
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Conditions
fLXT LXT Frequency 4.5V~5.5V — — 32768 — Hz
tSTART LXT Start Up Time 5V — — — 1000 μs
Duty Cycle Duty Cycle — — 40 — 60 %
RNEG Negative Resistance 5V — 3×ESR — — Ω
Operating Frequency Characteristic Curves
System Operating Frequency
Operating Voltage
8MHz
12MHz
16MHz
~ ~
4.5V 5.5V
~
~
~ ~

Rev. 1.00 18 October 26, 2018 Rev. 1.00 19 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
System Start Up Time Characteristics
Ta=25°C
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Conditions
tSST
System Start-up Time
Wake-up from Condition where fSYS is Off
— fSYS=fH~fH/64, fH=fHIRC — 16 — tHIRC
— fSYS=fSUB=fLXT — 1024 — tLXT
— fSYS=fSUB=fLIRC — 2 — tLIRC
System Start-up Time
Wake-up from Condition where fSYS is On
— fSYS=fH~fH/64, fH=fHIRC — 2 — tH
— fSYS=fSUB=fLIRC or fLXT — 2 — tSUB
System Speed Switch Time
FAST to SLOW Mode or
SLOW to FAST Mode
— fHIRC switches from off → on — 16 — tHIRC
— fLXT switches from off → on — 1024 — tLXT
tRSTD
System Reset Delay Time
Reset Source from Power-on Reset or
LVR Hardware Reset
— RRPOR=5V/ms
30 48 72 ms
System Reset Delay Time
LVRC/WDTC/RSTC Software Reset — —
System Reset Delay Time
Reset Source from WDT Overow — — 10 16 24 ms
tSRESET Minimum Software Reset Width to Reset — — 45 90 180 μs
Note: 1. For the System Start-up time values, whether fSYS is on or off depends upon the mode type and the chosen
fSYS system oscillator. Details are provided in the System Operating Modes section.
2. The time units, shown by the symbols tHIRC, tSYS etc. are the inverse of the corresponding frequency values
as provided in the frequency tables. For example tHIRC=1/fHIRC, tSYS=1/fSYS etc.
3. If the LIRC is used as the system clock and if it is off when in the SLEEP Mode, then an additional LIRC
start up time, tSTART, as provided in the LIRC frequency table, must be added to the tSST time in the table
above.
4. The System Speed Switch Time is effectively the time taken for the newly activated oscillator to start up.

Rev. 1.00 18 October 26, 2018 Rev. 1.00 19 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
Input/Output Characteristics
Ta=25°C
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Conditions
VIL Input Low Voltage for I/O Ports 5V —0 — 1.5 V
— 0 — 0.2VDD
VIH Input High Voltage for I/O Ports 5V —3.5 — 5.0 V
— 0.8VDD — VDD
IOL
Sink Current for I/O Ports
(PA, PB, PC) 5V
VOL=0.1VDD,
PxNS=0, x=A, B or C 32 64 —
mA
VOL=0.1VDD,
PxNS=1, x=A, B or C 50 100 —
IOH
Source Current for I/O Ports
(PA, PB, PC) 5V
VOH=0.9VDD,
SLEDCn[m+1:m]=00B
(n=0, 1; m=0, 2, 4 or 6)
-1.5 -2.9 —
mA
VOH=0.9VDD,
SLEDCn[m+1:m]=01B
(n=0, 1; m=0, 2, 4 or 6)
-2.5 -5.1 —
VOH=0.9VDD,
SLEDCn[m+1:m]=10B
(n=0, 1; m=0, 2, 4 or 6)
-3.6 -7.3 —
VOH=0.9VDD,
SLEDCn[m+1:m]=11B
(n=0, 1; m=0, 2, 4 or 6)
-8 -16 —
RPH Pull-high Resistance for I/O Ports (Note) 5V — 10 30 50 kΩ
ILEAK Input Leakage Current 5V VIN=VDD or VIN=VSS — — ±1 μA
tTCK TM Clock Input Pin Minimum Pulse Width — — 0.3 — — μs
tTPI TM Capture Input Pin Minimum Pulse Width — — 0.3 — — μs
tINT External Interrupt Minimum Pulse Width — — 10 — — μs
Note: The RPH internal pull high resistance value is calculated by connecting to ground and enabling the input pin
with a pull-high resistor and then measuring the pin current at the specied supply voltage level. Dividing
the voltage by this measured current provides the RPH value.
Memory Characteristics
Ta=-40°C~85°C, unless otherwise specied
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Conditions
VRW VDD for Read / Write — — VDDmin — VDDmax V
Flash Program / Data EEPROM Memory
tDEW
Erase / Write Cycle Time – Flash Program
Memory — — — 2 3 ms
Write Cycle Time – Data EEPROM Memory — — — 4 6 ms
IDDPGM Programming / Erase Current on VDD — — — — 5.0 mA
EPCell Endurance — — 100K — — E/W
tRETD ROM Data Retention Time — Ta=25°C — 40 — Year
RAM Data Memory
VDR RAM Data Retention Voltage — Device in SLEEP Mode 1.0 — — V

Rev. 1.00 20 October 26, 2018 Rev. 1.00 21 October 26, 2018
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
BS86DH12C
High Voltage Touch A/D Flash MCU with HVIO
LVD/LVR Electrical Characteristics
Ta=25°C
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Conditions
VLVR Low Voltage Reset Voltage
— LVR enable, voltage select 2.1V
-5%
2.1
+5% V
—LVR enable, voltage select 2.55V 2.55
—LVR enable, voltage select 3.15V 3.15
— LVR enable, voltage select 3.8V 3.8
VLVD Low Voltage Detection Voltage
— LVD enable, voltage select 2.0V
-5%
2.0
+5% V
— LVD enable, voltage select 2.2V 2.2
— LVD enable, voltage select 2.4V 2.4
— LVD enable, voltage select 2.7V 2.7
— LVD enable, voltage select 3.0V 3.0
— LVD enable, voltage select 3.3V 3.3
— LVD enable, voltage select 3.6V 3.6
— LVD enable, voltage select 4.0V 4.0
tLVDS LVDO Stable Time —For LVR enable, VBGEN=0,
LVD off → on — — 15 μs
tLVR Minimum Low Voltage Width to Reset — — 120 240 480 μs
tLVD Minimum Low Voltage Width to Interrupt — — 60 120 240 μs
A/D Converter Electrical Characteristics
Ta=-40°C~85°C
Symbol Parameter Test Conditions Min. Typ. Max. Unit
VDD Conditions
VDD A/D Converter Operating Voltage — — 4.5 — 5.5 V
VADI A/D Converter Input Voltage — — 0 — VREF V
VREF A/D Converter Reference Voltage — — 2 — VDD V
DNL A/D Converter Differential Non-linearity 5V VREF=VDD, tADCK=0.5μs -3 — +3 LSB
VREF=VDD, tADCK=10μs
INL A/D Converter Integral Non-linearity 5V VREF=VDD, tADCK=0.5μs -4 — +4 LSB
VREF=VDD, tADCK=10μs
IADC
Additional Current Consumption for A/D
Converter Enable 5V No load, tADCK=0.5μs — 1.5 3.0 mA
tADCK A/D Converter Clock Period — — 0.5 — 10 μs
tON2ST A/D Converter On-to-Start Time — — 4 — — μs
tADS A/D Converter Sampling Time — — — 4 — tADCK
tADC
A/D Conversion Time
(Including A/D Sampling and Hold Time) — — — 16 — tADCK