HD6412350 Hitachi, HD6412350 Datasheet - Page 408

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

9.13.3
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
PF
PF
PF
PF
Note: * Modes 2, 3, 6, and 7 only apply to the H8S/2351.
388
7
6
5
4
/ø
/AS
/RD
/HWR
Pin Functions
Selection Method and Pin Functions
The pin function is switched as shown below according to bit PF7DDR.
The pin function is switched as shown below according to the operating mode
and bit PF6DDR.
The pin function is switched as shown below according to the operating mode
and bit PF5DDR.
The pin function is switched as shown below according to the operating mode
and bit PF4DDR.
PF7DDR
Pin function
Operating
Mode
PF6DDR
Pin function
Operating
Mode
PF5DDR
Pin function
Operating
Mode
PF4DDR
Pin function
Modes 1, 2, 4, 5, 6*
Modes 1, 2, 4, 5, 6*
Modes 1, 2, 4, 5, 6*
HWR output pin
AS output pin
RD output pin
PF
—
—
—
7
input pin
0
PF
PF
PF
6
5
4
input pin
input pin
input pin
0
0
0
Modes 3 and 7*
Modes 3 and 7*
Modes 3 and 7*
ø output pin
PF
PF
PF
1
6
5
4
output pin
output pin
output pin
1
1
1