Specifications
Table Of Contents
- Technical Hardware
- 1 OVERVIEW
- 2 POWER SUPPLY AND INITIAL RESET
- 3 CPU, ROM, RAM
- 4 PERIPHERAL CIRCUITS AND OPERATION
- 4.1 Memory Map
- 4.2 Resetting Watchdog Timer
- 4.3 Oscillation Circuit
- 4.4 Input Ports (K00–K03, K10)
- 4.5 Output Ports (R00–R03)
- 4.6 I/O Ports (P00–P03, P10–P13, P20–P23)
- 4.7 LCD Driver (COM0–COM3, SEG0–SEG31)
- 4.8 Clock Timer
- 4.9 Stopwatch Timer
- 4.10 Programmable Timer
- 4.11 Serial Interface (SIN, SOUT, SCLK, SRDY)
- 4.12 A/D Converter
- 4.13 General-purpose Operation Amplifier (AMP)
- 4.14 SVD (Supply Voltage Detection) Circuit
- 4.15 Interrupt and HALT/SLEEP
- 5 SUMMARY OF NOTES
- 6 DIAGRAM OF BASIC EXTERNAL CONNECTIONS
- 7 CHARACTERISTICS
- 8 PACKAGE
- 9 PAD LAYOUT
- Technical Software
- 1 INTRODUCTION
- 2 BLOCK DIAGRAM
- 3 PROGRAM MEMORY (ROM)
- 4 DATA MEMORY
- 5 INITIAL RESET
- 6 PERIPHERAL CIRCUITS
- 6.1 Watchdog Timer
- 6.2 OSC3
- 6.3 Input Ports (K00–K03 and K10)
- 6.4 Output Ports (R00–R03)
- 6.5 I/O Ports (P00–P03, P10–P13 and P20–P23)
- 6.6 LCD Driver
- 6.7 Clock Timer
- 6.8 Stopwatch Timer
- 6.9 Programmable Timer
- 6.10 Serial Interface Circuit
- 6.11 Amplifier
- 6.12 SVD (Supply Voltage Detection) Circuit
- 6.13 A/D Converter
- 6.14 Sleep
- 6.15 Interrupt
- 7 SUMMARY OF NOTES
- APPENDIX
II-52 EPSON S1C62740 TECHNICAL SOFTWARE
CHAPTER 6: PERIPHERAL CIRCUITS (Serial Interface Circuit)
JP SIOINT ;SIO INTERRUPT ROUTINE
;
;* OUTPUT DATA TO SERIAL INTERFACE
;* USE MASTER MODE WITH PROGRAMMABLE TIMER PTOVF
;* INPUT FOR SERIAL SYNCHRONOUS CLOCK
OUTSIO:
LD X,ZSDL ;RESET SERIAL INTERFACE CIRCUIT
LDPX A,MX
LD A,MX
;
LD X,ZSIOC1
LD MX,1101B ;SET P20-P23 AS SERIAL INTERFACE PORT
;SET LSB FIRST
;SET MASTER MODE AND USE PTOVF FOR
;SERIAL CLOCK
LD X,ZRDL ;SET PT RELOAD REGISTER
;(RDH,RDL) = (0,0)
LBPX MX,00H
;
LD X,ZPTC2 ;SET PT INPUT FREQ. = 32 KHz/1
LD MX,1110B ; = 32 KHz
;
LD Z,ZPTC1 ;RESET PT THEN START IT
OR MX,0001B ;RESET IT
OR MX,0010B ;START IT
;SO, SERIAL INPUT CLOCK
; = 32 KHz / (256 * 2)
; = 64 Hz
;
DI
LD X,ZISIO ;RESET SIO INTERRUPT FLAG
LD A,MX
LD X,ZEIAD ;ENABLE SIO INTERRUPT
OR MX,0010B
EI
;
LD X,ZSDL ;LOAD SEND DATA BUFFER TO
LD Y,SENDL ;SERIAL DATA REGISTER
LDPY MX,MY
INC X
LD MX,MY
WAIT1: ;WAIT SLAVE MACHINE SEND NSRDY TO K00
LD X,ZK0
FAN MX,0001B
JP NZ,WAIT1
;
LD X,ZSIOC2 ;START SERIAL DATA TRANSFER
OR MX,0001B
RET
;