Casio CASSIOPEIA A-20 User Manual

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Device Features
CPU 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.
System RAM HM51W16165 (RAM5~RAM8)
8M bytes DRAM (16M bit DRAM 4K refresh)
ROM 8M bytes Mask ROM (32 bit Mask ROM)
Memory Slot Z370-ROM PCB
Connects to memory board with ROM.
This connects a development board as well.
System LSI 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.
LCD 4 gray levels
480 × 240, landscape
0.24 mm/pitch
LCD Driver 2 × 120 ch common driver.
3 × 160 ch segment driver with SRAM and disply control logic.
Touch Panel Resistive input device at the screen pixel resolution.
Just fitting to LCD panel.
Controller in System LSI.
DEVICE FEATURES

Casio CASSIOPEIA A-20 Specifications

General

Brand	Casio
Model	CASSIOPEIA A-20
Category	Handhelds
Language	English