HD64F2357VF13 Datasheet, PDF (360/1049 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

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 4 to 6, and mode 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
PF₅/RD
PF₄/HWR
PF₃/LWR
The pin function is switched as shown below according to the operating mode
and bit PF6DDR.
Operating
Mode
Modes 4 to 6*
Mode 7*
PF6DDR
—
0
1
Pin function
AS output pin
PF₆ input pin
PF₆ output pin
Note: * Modes 6 and 7 are provided in the on-chip ROM version only.
The pin function is switched as shown below according to the operating mode
and bit PF5DDR.
Operating
Mode
Modes 4 to 6*
Mode 7*
PF5DDR
—
0
1
Pin function
RD output pin
PF₅ input pin
PF₅ output pin
Note: * Modes 6 and 7 are provided in the on-chip ROM version only.
The pin function is switched as shown below according to the operating mode
and bit PF4DDR.
Operating
Mode
Modes 4 to 6*
Mode 7*
PF4DDR
—
0
1
Pin function
HWR output pin
PF₄ input pin
PF₄ output pin
Note: * Modes 6 and 7 are provided in the on-chip ROM version only.
The pin function is switched as shown below according to the operating mode
and bit PF3DDR.
Operating
Mode
Modes 4 to 6*
Mode 7*
PF3DDR
—
0
1
Pin function
LWR output pin
PF₃ input pin
PF₃ output pin
Note: * Modes 6 and 7 are provided in the on-chip ROM version only.
Rev.6.00 Oct.28.2004 page 330 of 1016
REJ09B0138-0600H