Block Diagram - Casio DT-700 Service Manual

5. Block Diagram

SH7020
CPU
Ram 1k
M Rom 16k
DMA Controler
Bios 256k
Flash Rom
Bios 512k
Mask Rom
Bios/KCG 512k
Mask Rom
Main Ram 512k/1M
PS Ram
Power Unit
AM3X2 CR2032
Main Li
Bus Controller
Interrupt Controller
Watching Timer
Timer Pulse Unit
I/O Port
Serial Controler
GA
Clock Unit
4.9/2.5/1.2 MHz
9.8304M Hz
Key Register
Real Time Clock
32.768M Hz
Contrl Unit
LCDD
Segment: 102 ch
Common: 48+1ch
Ram 10k bit
Page 6
Laser Unit
Buzzer
LED (Red/Green)
IR I/F
Sd/Rd/Ctrl
3 pin I/F
Sd/Rd/Gnd
CMOS I/F
Sd/Rd/Er/Dr
On Key
Trigger Key
Stroke Key:23Key
Init Sw,
AM3 Box Sw,
I/O Box Sw,Frst
Back Light LED
LCD
96 X 48 dots