Datasheet

Section 10 I/O Ports
Rev. 6.00 Mar. 18, 2010 Page 352 of 982
REJ09B0054-0600
10.11.4 Pin Functions
Port F pins also function as bus control signal input/output pin, interrupt input pin, system clock
output pin, A/D trigger input pin, and BUZZ output pin. The values of register and pin functions
are shown below.
• PF7/φ
The pin functions are switched as shown below according to the PF7DDR bit.
PF7DDR 0 1
Pin functions PF7 input pin φ output pin
• PF6/AS
The pin functions are switched as shown below according to the combination of operating
mode and the PF6DDR bit.
Operating
mode
Modes 4 to 6 Mode 7
PF6DDR ⎯ 0 1
Pin functions AS output pin PF6 input pin PF6 output pin
• PF5/RD
The pin functions are switched as shown below according to the combination of operating
mode and the PF5DDR bit.
Operating mode Modes 4 to 6 Mode 7
PF5DDR ⎯ 0 1
Pin functions RD output pin PF5 input pin PF5 output pin
• PF4/HW R
The pin functions are switched as shown below according to the combination of operating
mode and the PF4DDR bit.
Operating mode Modes 4 to 6 Mode 7
PF4DDR ⎯ 0 1
Pin functions HWR output pin PF4 input pin PF4 output pin