HD6412332 RENESAS [Renesas Technology Corp], HD6412332 Datasheet - Page 461

• Manufacturer Part Number: HD6412332
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

9.16.3
Port F pins also function as bus control signal input/output pins (AS, RD, HWR, LWR, LCAS,
BREQO, BREQ, and BACK) and the system clock (φ) output pin. The pin functions differ
between modes 4 to 6, and mode 7. Port F pin functions are shown in table 9.31.
Table 9.31 Port F Pin Functions
Pin
PF
PF
PF
PF
7
6
5
4
/φ
/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,
bit PF6DDR, and bit ASOD in PFCR2.
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
ASOD
PF6DDR
Pin function
Operating
Mode
PF5DDR
Pin function
Operating
Mode
PF4DDR
Pin function
AS output
HWR output pin
RD output pin
Modes 4 to 6
Modes 4 to 6
pin
—
0
PF
—
—
7
Modes 4 to 6
input pin
PF
0
6
pin
0
input
Rev.4.00 Sep. 07, 2007 Page 431 of 1210
1
PF
PF
PF
5
4
6
input pin
input pin
pin
output
1
0
0
Mode 7
Mode 7
PF
φ output pin
6
pin
0
input
REJ09B0245-0400
PF
PF
1
Mode 7
5
4
—
output pin
output pin
PF
1
1
6
pin
output
1