Device Features - Casio CASSIOPEIA A-20 Service Manual & Parts List

DEVICE FEATURES

Device
CPU
System RAM
ROM
Memory Slot
System LSI
LCD
LCD Driver
Touch Panel
SH-7093 (IC1)
Hitachi 32 bit RISC CPU.
Sleep/Standby Power Mode.
TLB supports 1K/4K bytes page,128 entries.
8K bytes Cash.
Interrupt Controller.
User Break Controller.
Bus State Controller.
Watch Dog Timer.
CASIO proprietary RTC.
2K bytes Mask ROM.
ON Controller.
1 ch Serial I/F.
1 ch Serial I/F with 16 bytes FIFO.
1 channel Reload Timer.
2 channel Free Run Timer.
HM51W16165 (RAM5~RAM8)
8M bytes DRAM (16M bit DRAM 4K refresh)
8M bytes Mask ROM (32 bit Mask ROM)
Z370-ROM PCB
Connects to memory board with ROM.
This connects a development board as well.
MB87A915 (IC3)
LCD Controller.
System Controller.
DRAM Access Controller.
Interrupt Controller.
Key Controller.
Audio Controller.
DMA Controller.
Dead Man's Switch.
Touch Panel Controller.
Infra Red Controller.
RS232C I/F Controller.
IrDA I/F Controller.
3-pin I/F Controller.
LED Controller.
PCMCIA Controller.
CompactFlash Controller.
4 gray levels
480 × 240, landscape
0.24 mm/pitch
2 × 120 ch common driver.
3 × 160 ch segment driver with SRAM and disply control logic.
Resistive input device at the screen pixel resolution.
Just fitting to LCD panel.
Controller in System LSI.
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Features