Holtek HT32 MCU User manual

HT32 MCU
Starter Kit User Manual
Revision: V1.10 Date: August 12, 2020

Rev. 1.10 2 of 20 August 12, 2020
HT32 MCU
Starter Kit User Manual
Table of Contents
Table of Contents
1 Introduction............................................................................................................. 5
Features................................................................................................................................. 5
2 Hardware Layout..................................................................................................... 6
Separating the e-Link32 Lite ............................................................................................................ 7
Serial Wire Debug Interface Switch – S1 ......................................................................................... 8
SWD-10P Connector – CN2, CN6.................................................................................................... 8
e-Link32 Lite Power Option – R8...................................................................................................... 9
e-Link32 Lite Power Option – J8....................................................................................................... 9
Boot Option – Located on the Board Reverse Side.......................................................................... 9
High Speed External Crystal Oscillator (HSE) Option ..................................................................... 9
Low Speed External Crystal Oscillator (LSE) Option ..................................................................... 10
USB D+/D- Option .......................................................................................................................... 10
MCU Power Jumper – J1................................................................................................................ 10
UART Option Jumper – J2.............................................................................................................. 10
e-Link32 UART Connector – CN8....................................................................................................11
Extension Connector CN4-1 ............................................................................................................11
Extension connector CN4-2............................................................................................................ 12
Micro USB Type B Connector – CN5.............................................................................................. 13
3 Connection between the e-Link32 Lite and the Target Board .......................... 14
4 Schematics............................................................................................................ 15

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Starter Kit User Manual
Table of Contents List of Tables
List of Tables
Table 1. SWD-10P Connector................................................................................................................... 8
Table 2. Extension Connector 1...............................................................................................................11
Table 3. Extension Connector 2.............................................................................................................. 12
Table 4. Micro USB Type B Connector ................................................................................................... 13

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HT32 MCU
Starter Kit User Manual
List of Figures
List of Figures
Figure 1. HT32 Starter Kit......................................................................................................................... 5
Figure 2. HT32 Starter Kit Block Diagram ................................................................................................ 6
Figure 3. HT32 Starter Kit Layout – using the ESK32-30501 V2.0 as an example .................................. 7
Figure 4. SWD-10P Connector ................................................................................................................. 8
Figure 5. Extension Connector 1 .............................................................................................................11
Figure 6. Extension Connector 2 ............................................................................................................ 12
Figure 7. Micro USB Type B Connector.................................................................................................. 13
Figure 8. Connection between the e-Link32 Lite V2.0 and the Target Board ......................................... 14
Figure 9. Connection between e-Link32 Lite V2.3 and Target Board ..................................................... 14
Figure 10. e-Link32 Lite V2.0.................................................................................................................. 16
Figure 11. e-Link32 Lite V2.2 .................................................................................................................. 17
Figure 12. e-Link32 Lite V2.3.................................................................................................................. 18
Figure 13. HT32F52352 Target Board – ESK32-30501.......................................................................... 19

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Starter Kit User Manual
1 Introduction List of Figures
11 Introduction
The HT32 Starter Kit is based around the 32-bit Arm®Cortex®-M0+/M3 high performance
microcontroller and is designed to assist users to get up and running with the Holtek 32-bit device
range as quickly as possible.
Standard C language programs can be developed using the integrated development environment
from Keil μVision and IAR EWARM. Using this foundation, Holtek also provides a comprehensive
function library to avoid complicated lower level function development in order to allow designers
to focus their time on their specic application development. Using a simple USB cable connection,
users only have to connect their PC to the integrated hardware debug interface (e-Link32 Lite
Serial-Wire Debugger) to automatically download the programs and immediately commence debug
operations.
e-Link32 Lite
CMSIS-DAP
Debug Adapter
Target MCU
Tool Part No.
Figure 1. HT32 Starter Kit
Features
▆Uses the HT32 high performance microcontrollers
Integrated Timer, I2C, SPI, USART, UART, 12-bit A/D converter, USB and I2S etc. Refer to the
datasheet of the corresponding MCU for details.
▆Comprises Target Board and e-Link32 Lite Serial-Wire Debugger
▆Can be used for the testing and development of many external devices
▆Can use either the Target Board USB connector or the e-Link32 Lite USB connector to supply power

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Starter Kit User Manual
2 Hardware Layout
22 Hardware Layout
I/O Extension-62P
I/O Extension-60P
USB LED
State LED
SWD
switch
SWD-10P
8 MHz
32.768 kHz
HT32 MCU
ARM Cortex-
M0+/M3
Microcontroller
LED1 LED2 Power
5V-to-3.3V
Regulator
Power
Jumper
reset
Micro
USB
UART
Jumper
Micro
USB
e-Link32
MCU
3.3V
LDO
Adjustment
SWD-10P
Voltage
translation
UART
e-Link32 Lite
CMSIS-DAP
Target Board
Figure 2. HT32 Starter Kit Block Diagram

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Starter Kit User Manual
2 Hardware Layout 2 Hardware Layout
Figure 3. HT32 Starter Kit Layout – using the ESK32-30501 V2.0 as an example
Separating the e-Link32 Lite
Not Separated (Default) Separated

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2 Hardware Layout
Serial Wire Debug Interface Switch – S1
S1 Description
Connect the SWD interface between the e-Link32 Lite and the Target MCU
– default setting
Disconnect the SWD interface between the e-Link32 Lite and the Target MCU
SWD-10P Connector – CN2, CN6
CN2 is the Serial Wire Debug interface connector on the e-Link32 Lite side, while CN6 is on the
Target Board side.
Figure 4. SWD-10P Connector
Table 1. SWD-10P Connector
Pin No. Description Pin No. Description
1 VDD 2 SWDIO
3 GND 4 SWCLK
5 GND 6 NC
7 NC 8 NC
9 GND 10 Reset

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2 Hardware Layout 2 Hardware Layout
e-Link32 Lite Power Option – R8
R8 Description
Pin 1 on the CN2 connector on the e-Link32 Lite side is used as the input. The
reference voltage is supplied through this pin to the voltage conversion chip – default
setting
Note that if the e-Link32 Lite has not been separated, the 3.3V on the Target Board
will have been connected to CN2-1 through the PCB wire connection
Pin 1 on the CN2 connector on the e-Link32 Lite side is used as the output. Here the
e-Link32 Lite voltage conversion chip is xed using 3.3V as the reference voltage.
Note that the 3.3V voltage on the Target Board has been connected to CN2-1
through the PCB wire connection, therefore this option is not allowed if the e-Link32
Lite has not been separated
Only the e-Link32 Lite V2.0 version has the R8 option.
e-Link32 Lite Power Option – J8
J8 Description
Pin 1 on the CN2 connector on the e-Link32 Lite side is used as the input. The
reference voltage is supplied through this pin to the voltage conversion chip – default
setting
Note that if the e-Link32 Lite has not been separated, the 3.3V on the Target Board
will be connected to CN2-1 through the S1 switch and the PCB wire connection
Pin 1 of the CN2 connector on the e-Link32 Lite side is used as the output. Here the
e-Link32 Lite voltage conversion chip is xed using the 3.3V as the reference voltage
Note that the 3.3V on the Target Board will be connected to CN2-1 through the S1
switch and the PCB wire connection. If the e-Link32 Lite has not been separated,
users should switch the S1 to the OFF position to use this option
Only the e-Link32 Lite V2.2 or V2.3 version has the J8 option.
Boot Option – Located on the Board Reverse Side
R18 Description
1 or NC – MCU boots from main ash – default setting
0 – MCU boots from bootloader – ISP
High Speed External Crystal Oscillator (HSE) Option
R23 & R24 Description
Open, HSE I/O pins disconnected from CN4 – default setting
Short, HSE I/O pins connected to CN4 pins 9 and 10. Y2 must be removed.
The designators on the ESK32-30105 (HT32F12366 SK) are R21 and R22.

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2 Hardware Layout
Low Speed External Crystal Oscillator (LSE) Option
R21 & R22 Description
Open, LSE I/O pins disconnected from CN4 – default setting
Short, LSE I/O pins connected to CN4 pins 31 and 32. X1 must be removed.
The designators on the ESK32-30105 (HT32F12366 SK) are R23 and R24.
USB D+/D- Option
R26 & R27 Description
Open, USB D+/D- pins disconnected from the CN4 – default setting
Short, USB D+/D- pins connected to the CN4 pins 55 and 56.
The early Starter Kit board or its Target MCU does not have an integrated USB or its USB D+/D-
are not bonded with the GPIO, therefore this option is not available.
MCU Power Jumper – J1
J1 Description
The MCU VDD pin is connected to the 3.3V power – default setting
The MCU VDD pin is disconnected from the 3.3V power
The jumper is useful when it is required to measure the MCU power consumption.
UART Option Jumper – J2
The Starter Kit arranges a group of the Target MCU UART to be used as external communication
interfaces, which can connect to the host computer or other devices. The Target MCU RX pin has
the option of connecting to the e-Link32 UART TX pin or to the extension connector, CN4_6:
RS232_TX.
J2 Description
The MCU UART RX is connected to the extension connector, CN4_6: RS232_TX
– default setting
The MCU UART RX is connected to the e-Link32 UART TX