Block Diagram - Casio CASSIOPEIA A-20 Service Manual & Parts List

BLOCK DIAGRAM

CompactFlash
Card
PCMCIA
Card
Mini Jack
IrDA
IrDA Transceiver
CIM-10S
(IC4)
RS232C
Connector
RS232C Transceiver
MAX3241
(IC5)
+3.3 V +5 V LCD Power
Power Supply
Circuit
AAX2
CR2032
Alkaline
or
Li-ion
10 M 32.768 K
PLL X4
80 MHz
CPU
SH-7093 (IC1)
3.68M
Gate Array
MB87A915 (IC3)
Keyboard
ACL
Voltage Detector
Recharger
— 21 —
RAM 8 Mbyte
HM51W16165
(RAM5~RAM8)
ROM 8Mbyte
Memory Slot
(U301~U305)
Audio Amp.
MC34119
(IC9)
LCD unit
L C D
EL Driver
E L
HV803
(IC801)
Touch Panel
Indicator (Red) LED
Charge Indicator (Green) LED
SP
MIC