HD6432633 Datasheet, PDF (485/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

Pin
PF0/BREQ/IRQ2
Selection Method and Pin Functions
The pin function is switched as shown below according to the combination of
the operating mode, and bits BRLE and PF0DDR.
Operating
Mode
Modes 4 to 6
Mode 7
BRLE
0
1
—
PF0DDR
Pin function
0
PF0
input pin
1
—
0
PF0
BREQ
PF0
output pin input pin input pin
IRQ2 input pin
1
PF0
output pin
10A.13 Port G
10A.13.1 Overview
Port G is a 5-bit I/O port and also used as external interrupt input pins (IRQ6 and IRQ7) and bus
control signal output pins (CS0 to CS3, CAS, and OE).
Figure 10A-23 shows the configuration of port G pins.
Port G
Port G pin
PG4 / CS0
PG3 / CS1
PG2 / CS2
PG1 / CS3 / OE / IRQ7
PG0 / CAS / IRQ6
Pin Functions in Modes 4 to 6
PG4 (input) / CS0 (output)
PG3 (input) / CS1 (output)
PG2 (input) / CS2 (output)
PG1 (input) / CS3 (output) / OE (output) / IRQ7 (input)
PG0 (I/O) / CAS (output) / IRQ6 (input)
Pin Functions in Mode 7
PG4 (I/O)
PG3 (I/O)
PG2 (I/O)
PG1 (I/O) / IRQ7 (input)
PG0 (I/O) / IRQ6 (input)
Figure 10A-23 Port G Pin Functions
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