Datasheet

Section 10 Serial Communication Interface
Rev. 6.00 Aug 04, 2006 page 350 of 680
REJ09B0145-0600
3. Pin Configuration
Table 10.4 shows the SCI3 pin configuration.
Table 10.4 Pin Configuration
Name Abbr. I/O Function
SCI3 clock SCK
3X
I/O SCI3 clock input/output
SCI3 receive data input RXD
3X
Input SCI3 receive data input
SCI3 transmit data output TXD
3X
Output SCI3 transmit data output
4. Register Configuration
Table 10.5 shows the SCI3 register configuration.
Table 10.5 Registers
Name Abbr. R/W Initial Value Address
Serial mode register SMR R/W H'00 H'FFA8/FF98
Bit rate register BRR R/W H'FF H'FFA9/FF99
Serial control register 3 SCR3 R/W H'00 H'FFAA/FF9A
Transmit data register TDR R/W H'FF H'FFAB/FF9B
Serial data register SSR R/W H'84 H'FFAC/FF9C
Receive data register RDR R H'00 H'FFAD/FF9D
Transmit shift register TSR Protected — —
Receive shift register RSR Protected — —
Bit rate counter BRC Protected — —
Clock stop register 1 CKSTPR1 R/W H'FF H'FFFA
Serial port control register SPCR R/W H'C0 H'FF91