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• P92/HBE
The pin function is switched as shown below according to the operating mode, the OBE bit in
PTCNT0, and the P92DDR bit.
Operating
mode
OBE
P92DDR
Pin function
P92 input pin
[Legend] X: Don't care.
• P91/AH
The pin function is switched as shown below according to the operating mode, the ADMXE
bit in SYSCR2, and the P91DDR bit.
Operating
mode
ADMXE
P91DDR
Pin function
P91 input pin
[Legend] X: Don't care.
• P90/LBE
The pin function is switched as shown below according to the operating mode, the OBE bit in
PTCNT0, and the P90DDR bit.
Operating
mode
OBE
P90DDR
Pin function
P90 input pin
[Legend] X: Don't care.
Extended mode
0
0
1
P92 output pin HBE output pin
Extended mode
0
0
1
P91 output pin
Extended mode
0
0
1
P90 output pin LBE output pin
1
X
P92 input pin
1
X
AH output pin
P91 input pin
1
X
P90 input pin
Rev. 1.00 Mar. 12, 2008 Page 321 of 1178
Section 8 I/O Ports
Single-chip mode
X
0
1
P92 output pin
Single-chip mode
X
0
1
P91 output pin
Single-chip mode
X
0
1
P90 output pin
REJ09B0403-0100
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