HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 316

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 8 I/O Ports
After a power-on reset and in hardware standby mode, PORTF contents are determined by the pin
states, as PFDDR and PFDR are initialized. PORTF retains its prior state after a manual reset, and
in software standby mode.
8.12.3
Port F pins also function as bus control signal input/output pins (AS, RD, HWR, LWR, WAIT,
BREQO, BREQ, and BACK), the system clock ( ) output pin and interrupt input pins (IRQ0 to
IRQ 3). 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 8.22.
Table 8.22 Port F Pin Functions
Pin
PF
PF
PF
Rev.3.00 Mar. 26, 2007 Page 274 of 772
REJ09B0355-0300
7
6
5
/
/AS
/RD
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.
Note:
The pin function is switched as shown below according to the operating mode
and bit PF5DDR.
Note:
PF7DDR
Pin function
Operating
Mode
PF6DDR
Pin function
Operating
Mode
PF5DDR
Pin function
* Modes 2, 3, 6, and 7 cannot be used in the H8S/2240.
* Modes 2, 3, 6, and 7 cannot be used in the H8S/2240.
Modes 1, 2, 4, 5, 6*
Modes 1, 2, 4, 5, 6*
RD output pin
AS output pin
PF
—
—
7
input pin
0
PF
PF
6
5
input pin
input pin
0
0
Modes 3 and 7*
Modes 3 and 7*
output pin
PF
PF
1
6
5
output pin
output pin
1
1