HD6432633 Datasheet, PDF (558/1453 Pages) Renesas Technology Corp – Series of Microcomputers (MCUs: microcomputer units)

10B.12.3 Pin Functions
Port F pins also function as external interrupt input pins (IRQ2 and IRQ3), A/D trigger input pin
(ADTRG), bus control signal input/output pins (AS, RD, HWR, LWR, WAIT, BREQO, BREQ,
and BACK), and the system clock (ø) output pin. The pin functions differ between modes 4 to 6,
and mode 7. Port F pin functions are shown in table 10B-21.
Table 10B-21 Port F Pin Functions
Pin
PF7/ø
Selection Method and Pin Functions
The pin function is switched as shown below according to bit PF7DDR.
PF7DDR
0
1
Pin function
PF7 input pin
ø output pin
PF6/AS
The pin function is switched as shown below according to the combination of
the operating mode and bits BREQOE, WAITE, ABW5 to ABW2, and
PF2DDR.
Operating
Mode
Modes 4 to 6
Mode 7
PF6DDR
—
0
1
Pin function
AS output pin
PF6 input pin
PF6 output pin
PF5/RD
The pin function is switched as shown below according to the operating mode
and bit PF5DDR.
Operating
Mode
Modes 4 to 6
Mode 7
PF5DDR
—
0
1
Pin function
RD output pin
PF5 input pin
PF5 output pin
PF4/HWR
The pin function is switched as shown below according to the operating mode
and bit PF4DDR.
Operating
Mode
Modes 4 to 6
Mode 7
PF4DDR
—
0
1
Pin function
HWR output pin
PF4 input pin
PF4 output pin
504