250
10.1.3
Pin configuration
Table 10.1 shows the SCI3 pin configuration.
Table 10.1
Pin Configuration
Name
Abbrev.
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
10.1.4
Register configuration
Table 10.2 shows the SCI3 register configuration.
Table 10.2
Registers
Name
Abbrev.
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