HD6432351 Datasheet, PDF (408/989 Pages) Renesas Technology Corp – The H8S/2000 CPU has an internal 32-bit architecture, is provided with sixteen 16-bit general registers and a concise

9.13.3 Pin Functions
Port F pins also function as bus control signal input/output pins (AS, RD, HWR, LWR, LCAS,
WAIT, BREQO, BREQ, and BACK) and the system clock (ø) output pin. The pin functions differ
between modes 1, 2, 4, 5, and 6, and modes 3 and 7. Port F pin functions are shown in table 9-24.
Table 9-24 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 operating mode
and bit PF6DDR.
Operating
Mode
Modes 1, 2, 4, 5, 6*
Modes 3 and 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 1, 2, 4, 5, 6*
Modes 3 and 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 1, 2, 4, 5, 6*
Modes 3 and 7*
PF4DDR
—
0
1
Pin function
HWR output pin
PF₄ input pin
PF₄ output pin
Note: * Modes 2, 3, 6, and 7 only apply to the H8S/2351.
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