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
S1C62740 TECHNICAL SOFTWARE EPSON II-53
CHAPTER 6: PERIPHERAL CIRCUITS (Serial Interface Circuit)
;* SERIAL INTERRUPT SERVICE ROUTINE
SIOINT:
LD X,ZISIO ;CHECK SIO INTERRUPT FLAG
FAN MX,0001B
JP Z,SIOIN1
;
LD X,ZSDL ;READ SERIAL DATA INTO A, B REGISTER
LDPX A,MX
LD B,MX
;:
; DO THE INTERRUPT SERVICE ROUTINE
;:
SIOIN1:
EI
RET
;
;* INPUT DATA FROM SERIAL INTERFACE
;* USE SLAVE MODE WITH POLLING METHOD
RDSIO:
LD X,ZSDL
LDPX A,MX ;RESET SERIAL INTERFACE CIRCUIT
LD A,MX
;
LD X,ZSIOC1 ;SELECT SLAVE MODE
LD MX,1000B ;SELECT MSB FIRST
;SET P20-P23 AS SERIAL I/O PORT
LD X,ZEIAD ;DISABLE SIO INTERRUPT
AND MX,1101B
;
LD X,ZSIOC2 ;SET TRIGGER
OR MX,0001B ;FOR SENDING NSRDY TO MASTER MACHINE
;
WAIT2:
FAN MX,0010B ;CHECK MASTER SENDING COMPLETELY
JP NZ,WAIT2 ;IF NOT, THEN WAIT
;
LD X,ZSDL ;READ THE SERIAL DATA
LDPX A,MX
LDPX B,MX
RET
;