Casio QV-10A Service Manual & Parts List page 8

1 CPU (IC600)
Controls the CCD, D RAM, Flash memory and key operation.
Reset,
MD2 ~
MD0,
EXTAL,
XTAL
CK
Port C
PC7 ~ PC0
Address bus 24-bit
Data bus 16-bit
PA15 ~ PA0
Port A
PROM/MASKROM1
CPU
Interrupt User break
controller controller
Serial communication
interface (x2channel)
Programmable timing
pattern controller
CS3 ~ CS0, A21 ~ A16
RAM1
Direct memory
access
controller
Direct state controller
16-bit integrated
timer pulse unit
A/D
Timer
converter
Port B
PB0 ~ PB15
Address bus 24-bit
High-order 8-bit
Low-order 8-bit
— 6 —
Address
A15 ~ A0
AD15 ~ AD0