12.3 Pin Functions - Renesas H8S/2633 Series Hardware Manual

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 Selection Method and Pin Functions
PF7/ø The pin function is switched as shown below according to bit PF7DDR.
PF7DDR
Pin function
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
PF6DDR
Pin function
PF5/RD The pin function is switched as shown below according to the operating mode
and bit PF5DDR.
Operating
Mode
PF5DDR
Pin function
PF4/HWR The pin function is switched as shown below according to the operating mode
and bit PF4DDR.
Operating
Mode
PF4DDR
Pin function
504
0
PF7 input pin
Modes 4 to 6
—
AS output pin
Modes 4 to 6
—
RD output pin
Modes 4 to 6
—
HWR output pin
ø output pin
Mode 7
0
PF6 input pin PF6 output pin
Mode 7
0
PF5 input pin PF5 output pin
Mode 7
0
PF4 input pin PF4 output pin
1
1
1
1