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• P55/RxD1
The pin function is switched as shown below according to the combination of the RE bit in
SCR of the SCI_1 and the P55DDR bit.
RE
P55DDR
Pin function
• P54/TxD1
The pin function is switched as shown below according to the combination of the TE bit in
SCR of the SCI_1 and the P54DDR bit.
TE
P54DDR
Pin function
• P53/SCK1
The pin function is switched as shown below according to the combination of the C/A bit in
SMR of the SCI_1, the CKE0 and CKE1 bits in SCR, and the P53DDR bit.
CKE1
C/A
CKE0
P53DDR
Pin function
P53 input pin
• P52/RxD0
The pin function is switched as shown below according to the combination of the RE bit in
SCR of the SCI_0 and the P52DDR bit.
RE
P52DDR
Pin function
0
0
P55 input pin
0
0
P54 input pin
0
0
0
1
P53 output pin
0
0
P52 input pin
1
P55 output pin
1
P54 output pin
0
1
SCK1 output
pin
1
P52 output pin
Rev. 1.00, 09/03, page 171 of 704
1
RxD1 input pin
1
TxD1 output pin
1
SCK1 output
SCK1 input pin
pin
1
RxD0 input pin
1
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