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Rev. 5.00, 09/03, page 431 of 760
SCI
Serial
receive
data
Internal data bus
PDRR*
SCPT[0]/RxD0
PDRR: PDR read
Note: * When reading the RxD0 pin, set the RE bit in SCSCR to 1.
Legend
Figure 14.4 SCPT[0]/RxD0 Pin
14.1.3 Pin Configuration
The SCI has the serial pins summarized in table 14.1.
Table 14.1 SCI Pins
Pin Name Abbreviation I/O Function
Serial clock pin SCK0 I/O Clock I/O
Receive data pin RxD0 Input Receive data input
Transmit data pin TxD0 Output Transmit data output
Note: These pins are made to function as serial pins by performing SCI operation settings with the
TE, RE, CKEI, and CKE0 bits in SCSCR and the C/A bit in SCSMR. Break state
transmission and detection can be performed by means of the SCI’s SCSPTR register.