Pin
Pin Functions and Selection Method
P63/FTIB/
KEYIN3
P63DDR
0
1
Pin function
P63 input
P63 output
FTIB input or KEYIN3 input
P62/FTIA/
KEYIN2
P62DDR
0
1
Pin function
P62 input
P62 output
FTIA input or KEYIN2 input
P61/FTOA/
Bit OEA in TOCR of the FRT and bit P61DDR select the pin function as follows
KEYIN1
OEA
0
1
P61DDR
Pin function
0
1
0
1
P61 input
P61 output
FTOA output
KEYIN1 input
P60/FTCI/
KEYIN0
P60DDR
0
1
Pin function
P60 input
P60 output
FTCI input or KEYIN0 input
FTCI input is usable when bits CKS1 and CKS0 in TCR of the FRT select an
external clock source
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