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Rev. 1.00, 05/04, page 121 of 544
• P81/GA20
The pin function is switched as shown below according to the combination of the FGA20E bit
in HICR0 and the P81DDR bit.
FGA20E 0 1
P81DDR 0 1 0*
P81 input pin P81 output pin GA20 output pin Pin Function
GA20 input pin
Note: * When bit FGA20E is set to 1 in HICR0, the P81DDR bit should be cleared to 0.
• P80/PME
The pin function is switched as shown below according to the combination of the PMEE bit in
HICR0 and the P80DDR bit.
PMEE 0 1
P80DDR 0 1 0*
P80 input pin P80 output pin PME output pin Pin Function
PME input pin
Note: * When bit PMEE is set to 1 in HICR0, the P80DDR bit should be cleared to 0.