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• P51/TxD0
The pin function is switched as shown below according to the combination of the TE bit in
SCR of the SCI_0 and the P51DDR bit.
TE
P51DDR
Pin function
• P50/SCK0
The pin function is switched as shown below according to the combination of the C/A bit in
SMR of the SCI_0, the CKE0 and CKE1 bits in SCR, and the P50DDR bit.
CKE1
C/A
CKE0
P50DDR
Pin function
P50 input pin
Rev. 1.00, 09/03, page 172 of 704
0
0
P51 input pin
0
0
0
1
P50 output pin
1
P51 output pin
0
1
SCK0 output
pin
1
TxD0 output pin
1
SCK0 output
SCK0 input pin
pin
1
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