Mb87A915 (Gate Array/Ic3) - Casio CASSIOPEIA A-20 Service Manual & Parts List

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Getting started manual (23 pages)

Getting started manual (23 pages)

Getting started (23 pages)

Table Of Contents

Table of Contents

MB87A915 (Gate Array/IC3)

N o .

Pin Name

V o l t

CFCE1B

IOPORT0

IOPORT1

VSS

V5D3

VS1

V5D4

V5D11

CD1B

V5D5

VDD1

V5CE2B

V5D12

V5D6

V5D13

V5CE1B

V5A10

V5OEB

V5A11

VSS

VDD1

VSS

V5IORDB

V5A9

V5IOWRB

V5A8

V5A17

V5A13

V5A18

V5A14

VDD1

V5A19

V5WEB

V5A20

V5A21

V5A16

VSS

V5A22

V5A15

VDD1

V5A23

V5A12

V5A24

V5A7

VDD1

VSS

V5A25

V5A6

V5A5

V5RESET

V5A4

V5A3

V5A2

V5REGB

VDD1

V5D7

V5D14

V5A1

V5D15

I o / O u t

CE signal for CompactFlash card

I/O

Not used

I/O

I/O Port 1

GND

I/O

Data bus

Voltage detect for PCMCIA

I/O

Data bus

I/O

Data bus

PCMCIA CARD detect

I/O

Data bus

+5V source

CE2 signal for PCMCIA CARD

I/O

Data bus

I/O

Data bus

I/O

Data bus

CE1 signal for PCMCIA CARD

Address bus

OE signal for PCMCIA CARD

Address bus

GND

+5V source

GND

IORD signal for PCMCIA CARD

Address bus

IOWR signal for PCMCIA CARD

Address bus

+5V source

Address bus

WE signal for PCMCIA CARD

Address bus

GND

Address bus

+5V source

Address bus

+5V source

GND

Address bus

Reset signal for PCMCIA CARD

Address bus

Attribute memory select

+5V source

I/O

Data bus

I/O

Data bus

Address bus

I/O

Data bus

— 27 —

Function

To/From

CompactFlash card

LCD unit

PCMCIA CARD

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Mb87A915 (Gate Array/Ic3) - Casio CASSIOPEIA A-20 Service Manual & Parts List

MB87A915 (Gate Array/IC3)

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