Casio SE-S10

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LSI DIAGRAM6-2.
PWD
RESET
CPU
uPD70F3738GC
-UEU-AX
20MHz
VDD=EVDD
= AVREF0 = AVREF1
=2.3 ~ 3.6V
Backup
Internal RTC
Local_BUS
AD0-AD7
A8-A14
A20(CS signal)
Multiplex
3.3V drive
LED drive signal
Rear display ON/OFF Control
Drive
Drive
KC0-3
KC4
KI0-7
3-line serial (Common)
Chip selection
Chip selection
Drive
Sensor
Motor drive
stb drive
SRAM 256kB Data backup
Main display only
Transaction
Main display and
Rear display
14 SEG LED
LED
KC4
KI4-KI7
SWITCH
KC0-KC3, MODE COM
KI0-KI7
KEY
SHEET
Journal and Journal
Thermal
printer
Journal Volume removing
Wide
motor
Serial FROM 2MBEJ 256kB
Serial FROM 32MBRAC12 4MB
Drawer
BUZZER
7SEG LED