M16C26 Datasheet, PDF (155/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

Udenvdeelropment
Preliminary Specifications Rev.
Specifications in this manual are
UART2 Special Mode Register 4
0.9
tentative
and
subject to change.
SINGLE-CHIP 16-BIT
M16C/26 Group
CMOS MICROCOMPUTER
Table 1.15.17. Functions changed by SCL, SDA output select bit
Function
STSPSEL = 0
STSPSEL = 1
SCL, SDA output
Output of SI/O control circuit Output of start/stop
conditioncontrol circuit
Start/stop condition interrupt factor Start/stop condition detection Completion of start/stop condition
generation
(1) When slave mode (CKDIR=0, STSPSEL=0)
SCL
SDA
Start condition detection
interrupt
Stop condition detection
interrupt
(2) When master mode (CKDIR=1, STSPSEL=1)
STSPSEL=0 STSPSEL=1
STSPSEL=0
SCL
SDA
STAREQ=1
Start condition detection
interrupt
STSPSEL=1 STSPSEL=0
STPREQ=1
Stop condition detection
interrupt
Figure 1.15.31 Functions changed by SCL, SDA output select bit
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