Chapter 13
Serial Interface 2
XIII - 2 Overview
13.1 Overview
Serial interface 2 can be used for both communication types of clock synchronous and UART (Universal Asyn-
chronous Receiver).
13.1.1 Functions
Table: 13.1.1 shows functions with serial interface 2.
Table:13.1.1 Serial Interface 2 Functions
Communication type Clock synchronous UART (full duplex)
Interrupt SC2TIRQ
(at completion of transmission)
SC2TIRQ (at completion of transmission)
SC2RIRQ (at completion of reception)
Pin SBO2,SBI2,SBT2 SBO2,SBI2
3-channel communication O -
2-channel communication O SBO2,SBT2 O
1-channel communication - O SBO2
Transfer bit count specification/frame
selection
1 to 8 bits 7 bits +1STOP
7 bits +2STOP
8 bits +1STOP
8 bits +2STOP
Parity bit selection - O
Parity bit control - 0 parity
1 parity
Even parity
Odd parity
Start condition selection O
“With” only
First transfer bit specification O O
Input edge/output edge O -
SBO2 output control after last data
transmission
H/L last data retained -
Clock source 1/2, 1/4, 1/16, 1/64 of timer 14 underflow
1/2, 1/4, 1/16, 1/64 of timer 15 underflow
1/2, 1/4, 1/16, 1/64 of timer 16 underflow
IOCLK/2
IOCLK/4
SBT2 pin
1/32, 1/64, 1/256, 1/1024 of timer 14
underflow
1/32, 1/64, 1/256 , 1/1024 of timer 15
underflow,
1/32, 1/64, 1/256, 1/1024 of timer 16
underflow
IOCLK/32
IOCLK/64
Error detection Overrun error Parity error
Overrun error
Frame error
Max. transfer rate 5.0Mbps 300Kbps
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