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— 14 —

(2) Non-port pins (2/2)

Pin Name

AD0 to AD7

A8 to A15

WAIT

ASTB

ANI0 to ANI7

ANO0, ANO1

AVREF0

AVREF1

AVSS

RESET

XT1

XT2

VDD0

VSS0

VDD1

VSS1

VPP

I/O

Output

Input

Output

Input

Output

Input

—

Input

—

Input

—

Function

Lower address/data bus when expanding memory

externally

Higher address bus when expanding memory

externally

Strobe signal output for read operation from external

memory

Strobe signal output for write operation to external

memory

Wait insertion when accessing external memory

Strobe output externally latching address information

output to ports 4 and 5 to access external memory

A/D converter analog input

D/A converter analog output

A/D converter reference voltage input (also functions

as analog power supply)

D/A converter reference voltage input

A/D converter, D/A converter ground potential. Use

the same potential as VSS0.

System reset input

Crystal connection for main system clock oscillation

Crystal connection for subsystem clock oscillation

Positive power supply for ports

Ground potential for ports

Positive power supply (except ports and analog

block)

Ground potential (except ports and analog block)

High-voltage application for program write/verify.

Internally connected. Connect directly to VSS0.

After Reset

Input

—

Input

—

Alternate Function

P40 to P47

P50 to P57

P64

P65

P66

P67

P10 to P17

P130, P131

—

P07

—

Brand	Casio
Model	PCR-262
Category	Cash Register
Language	English

Casio PCR-262 Service Manual

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