Datasheet

Section 9 I/O Ports
Rev.6.00 Mar. 18, 2009 Page 392 of 980
REJ09B0050-0600
• PF4/HWR
The pin function is switched as shown below according to the operating mode, bit EXPE, and bit
PF4DDR.
Operating
mode
1, 2, 4 7
EXPE — 0 1
PF4DDR — 0 1 —
Pin function HWR output PF4 input PF4 output HWR output
• PF3/LWR
The pin function is switched as shown below according to the operating mode, bit EXPE, bit
LWROE, and bit PF3DDR.
Operating
mode
1, 2, 4 7
EXPE — 0 1
LWROD 1 0 — 1 0
PF3DDR — 0 1 0 1 — 0 1
Pin function LWR
output
PF3 input PF3
output
PF3 input PF3
output
LWR
output
PF3 input PF3
output