Panasonic MICROCOMPUTER MN103S Installation and operating instructions

MICROCOMPUTER MN103S
MN103S927/92A/F92G
LSI Application Notes Excerption
Pub.No.3329211-010E

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About This Manual1
■Configuration of This Manual
This LSI application note consists of the following sections.
•Overview: This section presents a brief description of this LSI's overview and features as information
useful for selecting and using a microcomputer.
•Introduction: This section describes a sample program that implements this LSI's basic functions.
•Microcomputer Basics: This section provides a brief description of the settings and sample programs for
peripheral LSI functions that are not addressed in the Introduction section.
•Appendix: The appendix provides circuit diagrams of evaluation boards that can be used to verify the
proper operation of the sample programs described in this manual.
■This document's format
This manual mainly consists of titles, text, sample programs, precautions, and reference information.
The page layout and definition of these elements are shown below.
Please note that the consumption current values provided in this application note are reference
values. Microcomputer power consumption varies largely depending on the nature of the
application (program) as well as the peripheral circuits connected to I/O pins.
For obtaining actual power consumption, please mount the finished device on a product and
measure the power consumption. And then mark it on the face plate and calculate a battery
drive time.
Dual oscillation circuit provides low voltage and low power consumption operation, and high-
speed processing.
By selecting between the two oscillation modes according to the current state, power
consumption in standby state can be reduced to as low as 1/330th of that in regular operation,
and data processing can be performed at high speed of up to 4 MHz.
Even at the moment when the oscillation circuit switches modes, all data is preserved, and input
and output are kept stable.
Tex t
Sample program
Section title
Header
The header indicates the
chapter number and title.
Footer
The footer indicates
the section title.
Subsection title
This is the smallest block
used to convey information
in this document.
Precaution
Reference
information
2-72 Creating executable EX files
Creating executable EX files
c:\panax\cc103\bin\cc103 -c -fenable-asm -103 -O
-Ic:\panax\cc103\include -g int.c
c:\panax\cc103\bin\cc103 -c -fenable-asm -103 -O
-Ic:\panax\cc103\include -g init.c
c:\panax\cc103\bin\cc103 -c -fenable-asm -103 -O
-Ic:\panax\cc103\include -g sample.c
c:\panax\cc103\bin\as103 -g startup.as
c:\panax\cc103\bin\ld103 -g -m -103 -o PWM_output.x -T@DATA=00000000
-T@CODE=40000000 startup.ro int.ro init.ro sample.ro
-l c:\panax\cc103\lib\cc103.l
About This Manual

About This Manual2
Format used for sample program explanations
The sample programs included in the Introduction, Microcomputer Basics are explained in the following order of
headings. Unnecessary headings may be omitted depending on their sample program.
•Specification
•Hardware allocation list
•Register description
•Flowchart
•Example program
The following oscillation frequencies this documentís sample programs use: fosc =10 MHz, fx =32.768 kHz.
More information
Program CDs and evaluation boards for use with the programs described in this document are available.
Contact your Panasonic sales representative or access the following URL.
http://panasonic.co.jp/semicon/e-micom/inquiry
Evaluation boards are sold through Panasonic sales offices.

About This Manual3

..
Table of Contents
Chapter 1 Overview
Chapter 2 Introduction
Chapter 3 Microcomputer Basics 1
Chapter 4 Microcomputer Basics 2
Chapter 5 Appendix
1
2
3
4
5

Table of Contents 1
Table of Contents
Chapter 1 Overview
1.1 Overview ................................................................................................................................2
1.2 What is an MN103S92 Series microcomputer .......................................................................3
1.3 MN103S92 Series internal configuration ...............................................................................4
1.4 MN103S92 Series features .....................................................................................................5
1.5 Example application ...............................................................................................................8
1.6 Development language and OS ..............................................................................................9
1.7 Development tools .................................................................................................................9
Chapter 2 Introduction
2.1 Overview ................................................................................................................................2
2.1.1 Overall configuration of sample program ........................................................................3
2.1.2 Sample system specifications and functions to be used ...................................................5
2.1.3 Sample program flowchart overview ...............................................................................6
2.2 Startup ....................................................................................................................................7
2.3 Interrupt functions ................................................................................................................11
2.4 Initial settings of variables ...................................................................................................14
2.5 Initializing functions to be used ...........................................................................................15
2.5.1 CPU operation settings ...................................................................................................16
2.5.2 Motor control PWM operation settings ..........................................................................17
2.5.3 16-bit timer operation .....................................................................................................25
2.5.4 A/D converter operation settings ....................................................................................30
2.5.5 Port settings ....................................................................................................................34
2.5.6 Serial interface operation settings ..................................................................................36
2.5.7 Watchdog timer settings .................................................................................................43
2.6 Interrupt handling .................................................................................................................45
2.6.1 16-bit timer interrupt ......................................................................................................45
2.6.2 Serial interface UART reception interrupt .....................................................................46

Table of Contents 2
2.6.3 Serial interface UART transmission interrupt ................................................................48
2.6.4 A/D conversion interrupt ................................................................................................50
2.6.5 Enable multiple interrupts ..............................................................................................52
2.7 Main routine .........................................................................................................................54
2.7.1 A/D conversion processing .............................................................................................55
2.7.2 Serial reception data processing .....................................................................................57
2.7.3 Key input processing ......................................................................................................60
2.7.4 PWM output setting ........................................................................................................62
2.7.5 Switching PWM output phase ........................................................................................68
2.8 Watchdog timer settings .......................................................................................................71
2.8.1 Reset watchdog timer .....................................................................................................71
2.8.2 Watchdog timer overflow processing .............................................................................74
2.9 Creating executable EX files ................................................................................................75
2.9.1 Introduction of BAT files ...............................................................................................75
2.10 System for developing this program ....................................................................................76
2.10.1 Development system configuration ................................................................................76
Chapter 3 Microcomputer Basics 1
3.1 Chapter overview ...................................................................................................................2
3.2 External interrupt ...................................................................................................................3
3.2.1 Setting specification polarity edge interrupts ...................................................................3
3.2.2 Setting both edges interrupts ............................................................................................8
3.2.3 Specification polarity edge interrupt using noise filter ..................................................13
3.2.4 Both edges interrupts using noise filter ..........................................................................20
3.3 I/O ports ...............................................................................................................................27
3.3.1 Setting output port ..........................................................................................................27
3.3.2 Setting input port ............................................................................................................30
3.4 Input-only port .....................................................................................................................33
3.4.1 Setting input-only port ....................................................................................................33
3.5 Pull-up resistor .....................................................................................................................35
3.5.1 Setting pull-up resistor ...................................................................................................35
3.6 8-bit timer operation .............................................................................................................37

Table of Contents 3
3.6.1 Counting rising edges using the event count ..................................................................37
3.6.2 Setting timer output pin ..................................................................................................44
3.6.3 50 kHz signal output using the timer output ..................................................................47
3.6.4 Interrupt generation every 100 milli seconds using the cascade connection of
timer 0 and timer 1 .........................................................................................................52
3.6.5 Interrupt generation every 60 seconds using the cascade connection of timer 0,
timer 1, timer 2 and timer 3 ............................................................................................59
3.7 16-bit timer operation ...........................................................................................................68
3.7.1 Counting rising edges using the event count ..................................................................75
3.7.2 Setting timer output pin ..................................................................................................79
3.7.3 50 Hz signal output using the timer output ....................................................................81
3.7.4 1/4 duty waveform output using the timer output ..........................................................85
3.7.5 Pulse width measurement using the timer capture function ...........................................89
3.7.6 Up/down counting selection with TM8AIO (external trigger) .......................................93
3.7.7 Counting operation with 4-fold 2-phase encoding .........................................................97
3.7.8 Count disable with TM8AIO (external trigger) ............................................................103
3.7.9 Timer 1-shot operation .................................................................................................107
3.7.10 Timer activation with TM8AIO (external trigger) .......................................................111
3.8 Synchronous serial interface operation ..............................................................................115
3.8.1 Setting serial transmission pin ......................................................................................115
3.8.2 Setting serial reception pin ...........................................................................................122
3.8.3 Transmitting data with no start condition .....................................................................128
3.8.4 Transmitting and receiving data with no start condition ..............................................137
3.8.5 Receiving data with no start condition .........................................................................146
3.9 A/D conversion function ....................................................................................................154
3.9.1 Setting analog input pin ................................................................................................154
3.9.2 A/D conversion of single channel ................................................................................157
3.9.3 A/D conversion of multiple channels ...........................................................................163
3.9.4 A/D conversion of multiple channels using control register B ....................................171
3.10 Motor control .....................................................................................................................181
3.10.1 Setting motor control PWM output pin ........................................................................187
3.10.2 Saw-tooth wave mode output .......................................................................................189
3.10.3 Deadtime insertion ........................................................................................................193
3.11 Notes for on-board writing to flash memory ......................................................................197
3.11.1 On-board writing using PX-FW2 .................................................................................198
Chapter 4 Microcomputer Basics 2
4.1 Chapter overview ...................................................................................................................2

Table of Contents 4
4.2 Writing in/reading from EEPROM using synchronous serial interface .................................3
4.3 120 degrees power on PWM output .....................................................................................22
4.4 Sin wave PWM output using motor control PWM ..............................................................37
Chapter 5 Appendix
5.1 Appendix-1 .............................................................................................................................2
5.2 Appendix-2 .............................................................................................................................3
5.3 Appendix-3 .............................................................................................................................4

Table of Contents 5

Chapter 3
Microcomputer Basics 1
8-bit timer operation III−37
3.6 8-bit timer operation
3.6.1 Counting rising edges using the event count
■Overview
This program uses Timer 1 to count the rising edges of the external signal input from the TM1IO input pin with a
binary counter.
When the external input signal is detected 5 times, an interrupt is generated and LED connected to P44 flashes.
The setting stored in the base register determines the number of rising edge detections that is counted until an
interrupt is generated.
■Hardware allocation list
Source frequency fosc (10 MHz)
Ports used Port 3 (P31) Event input pin
Timers used Timer 1 Event count timer
Count clock source TIM0IO input
Interrupts used Timer 1 interrupt LED connected to P44 flashes
Interrupt level 0
Interrupt source Binary counter underflow

Chapter 3
Microcomputer Basics 1
III−38 8-bit timer operation
■Register description
Group 4 Interrupt Control Register (G4ICR: 0x00008910)
Timer 1 Base Register (TM1BR: 0x0000A149)
bp Flag name Description
15 
14-12
G4LV2
G4LV1
G4LV0
Group 4 interrupt priority level
Set a level from 6 to 0.
11-10 
9G4IE1
Timer 1 underflow interrupt enable flag
0: Disabled
1: Enabled
8G4IE0
Timer 0 underflow interrupt enable flag
0: Disabled
1: Enabled
7-6 
5G4IR1
Timer 1 underflow interrupt request flag
0: No interrupt request
1: Interrupt request
4G4IR0
Timer 0 underflow interrupt request flag
0: No interrupt request
1: Interrupt request
3-2 
1G4ID1
Timer 1 underflow interrupt detection flag
0: No interrupt detected
1: Interrupt detected
0G4ID0
Timer 0 underflow interrupt detection flag
0: No interrupt detected
1: Interrupt detected
bp Flag name Description
7
6
5
4
3
2
1
0
TM1BR7
TM1BR6
TM1BR5
TM1BR4
TM1BR3
TM1BR2
TM1BR1
TM1BR0
Timer 1 Base Register

Chapter 3
Microcomputer Basics 1
8-bit timer operation III−39
Timer 1 Binary Counter (TM1BC: 0x0000A151)
Timer 1 Mode Register (TM1MD: 0x0000A141)
Port 3 I/O Control Register (P3DIR: 0x0000A023)
bp Flag name Description
7
6
5
4
3
2
1
0
TM1BC7
TM1BC6
TM1BC5
TM1BC4
TM1BC3
TM1BC2
TM1BC1
TM1BC0
Timer 1 binary counter
bp Flag name Description
7TM1CNE
Timer operation enable
0: Operation disabled
1: Operation enabled
6TM1LDE
Timer initialization
0: Normal operation
1: Initialization
TM1BR value is loaded into TM1BC.
Timer pulse output 1 is reset to low level.
5-3 
2-0
TM1CK2
TM1CK1
TM1CK0
Count source selection
000: IOCLK
001: IOCLK/8
010: IOCLK/32
011: Cascading with Timer 0
100: Timer 0 underflow
101: Setting not available
110: Timer 2 underflow
111: TM1IO pin input
bp Flag name Description
7
6-0
P36D
P35D
P34D
P33D
P32D
P31D
P30D
P36 to P30 I/O control
0: Input mode
1: Output mode

Chapter 3
Microcomputer Basics 1
III−40 8-bit timer operation
Port 3 Output Mode Register (P3MD: 0x0000A033)
bp Flag name Description
7-4 
3 P33M
Switching outputs
0: I/O port
1: TM3IO
2 P32M
Switching outputs
0: I/O port
1: TM2IO
1 P31M
Switching outputs
0: I/O port
1: TM1IO
0 P30M
Switching outputs
0: I/O port
1: TM0IO

Chapter 3
Microcomputer Basics 1
8-bit timer operation III−41
■Flowchart
main ()
Set P44 output
Set count clock source
Initialize CPU
Set the base register
Set Timer 1 input pin
Select Timer 1 normal operation
Set an interrupt level
Enable the interrupt
Start event
Initialize Timer 1
int_timer1 ()
Binary counter underflow
P44 state
Low (LED off)
High output (LED on)
High (LED on)
Low output (LED off)
END

Chapter 3
Microcomputer Basics 1
III−42 8-bit timer operation
■Example program
/************************************************************************/
/* CHECK Program for The count of the rising edge */
/* which used event count operation(8-bit) */
/************************************************************************/
/* Setting of Main Peripheral */
/* Port 0 : Unused */
/* Port 1 : Unused */
/* Port 2 : Unused */
/* Port 3 : Used as Timer 1 input */
/* Port 4 : Used as output port */
/* Port 5 : Unused */
/* Port 6 : Unused */
/* Port 7 : Unused */
/* Port 8 : Unused */
/* Timer 0 : Unused */
/* Timer 1 : Used as Event count operation */
/* Timer 2 : Unused */
/* Timer 3 : Unused */
/* Timer 8 : Unused */
/* Timer 11 : Unused */
/* 3-phase PWM output : Unused */
/* Serial interface communication 2 : Unused */
/* 10-bit A/D converters : Unused */
/* */
/* Interrupt : External interrupt Unused */
/* */
/* 2004/09 Rev 0.1 */
/************************************************************************/
#include "sr103s92.h"
#include "int.h"
/****************************/
/* Declaration of function */
/****************************/
void main(void);
void initialize(void);
/*-----------------------------------------------
After the assembler boot processing is completed
control is shifted to this main routine.
-----------------------------------------------*/
void main(void)
{
initialize(); /* Initial Job */
TM1MD = 0x00; /* Stop the counter */
/*-----------------------------------------------
P4 setting
-----------------------------------------------*/
P4OUT = 0x00; /* Set P44 Low(VSS level) */
P4DIR = 0x10; /* Set P44 output */
/*-----------------------------------------------
P3 setting
-----------------------------------------------*/
P3MD = 0x02; /* Set TM1IO port */
P3DIR = 0x00; /* Set P31 input */
/*-----------------------------------------------
Event count timer setting
-----------------------------------------------*/
TM1BR = 0x04; /* Set the base register */
TM1MD = TM1MD | 0x07; /* Select the clock source to TMIN1 pin input */
TM1MD = TM1MD | 0x40; /* Initial timer */
TM1MD = TM1MD & 0xBF; /* Set normal operation */
G4ICR = 0x0200; /* Set an interrupt level */
/* Enable the interrupt */
asm (" or 0x0F00,PSW\n"); /* Enable the interrupt, Interrupt level 7 */

Chapter 3
Microcomputer Basics 1
8-bit timer operation III−43
asm (" nop\n");
asm (" nop\n");
TM1MD = TM1MD | 0x80; /* Start the counter */
while(1){
}
}
/*----------------------------------------------
Operation initial setting
----------------------------------------------*/
void initialize(void)
{
asm (" and 0xF0FF,PSW\n"); /* Disable all maskable interrupts */
asm (" nop\n");
asm (" nop\n");
CPUM = 0x0000; /* Set normal mode */
}
/*-----------------------------------------------
Timer 1 underflow
-----------------------------------------------*/
void int_timer1(void)
{
if(P4OUT & 0x10){
P4OUT = 0x00; /* Set P44 Low(VSS level) */
}
else{
P4OUT = 0x10; /* Set P44 High(VDD level) */
}
}

Issued by Matsushita Electric Industrial Co., Ltd.
2005 Matsushita Electric Industrial Co., Ltd. All Rights Reserved
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MN103S927/92A/F92G
LSI Application Notes Excerption
March, 2005 1st Edition