HD6432345 Datasheet, PDF (286/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

8.11.3 Pin Functions
Port F pins also function as bus control signal input/output pins (AS, RD, HWR, LWR, WAIT,
BREQ, and BACK) the system clock (ø) output pin and interrupt input pins (IRQ0 to IRQ3). 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 8.20.
Table 8.20 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
PF₅/RD
PF₄/HWR
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
Note: * Modes 1 to 3 are not available on the F-ZTAT version.
Modes 2, 3, 6, and 7 are not available on the ROMless version.
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
Note: * Modes 1 to 3 are not available on the F-ZTAT version.
Modes 2, 3, 6, and 7 are not available on the ROMless version.
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 1 to 3 are not available on the F-ZTAT version.
Modes 2, 3, 6, and 7 are not available on the ROMless version.
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