Expanded
Modes
Single-Chip
Mode
Mode 3
Port
Description
Pins
Mode 1
Mode 2
Master Mode
Port 8
• 7-bit I/O port
P86/IRQ5/SCK1
P85/IRQ4/RxD1
P84/IRQ3/TxD1
P83
Serial communication interface 1 input/output (TxD1,
RxD1, SCK1), external interrupt input (IRQ5, IRQ4, IRQ3),
or general input/output
General
General
General
input/output
input/output
input/output
P82
P81
P80
Port 9
• 8-bit I/O port
P97/WAIT
Expanded data bus control input
General
(WAIT), or general input/output
input/output
P96/ø
System clock (ø)
output
System clock (ø)
output
ø output or
general input
P95/AS
Expanded data
bus control output bus control output
(RD, WR, AS) (RD, WR, AS)
Expanded data
General
input/output
P94/WR
P93/RD
P92/IRQ0
P91/IRQ1
P90/ADTRG/IRQ2
External interrupt (IRQ0, IRQ1) or general input/output
A/D converter external trigger input (ADTRG), external
interrupt input (IRQ2), or general input/output
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RENESAS [ RENESAS TECHNOLOGY CORP ]
