M16C26 Datasheet, PDF (124/239 Pages) Renesas Technology Corp – 16-BIT CMOS SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/20 SERIES

Udenvdeelropment
Serial I/O
Preliminary Specifications Rev. 0.9
Specifications in this manual are tentative and subject to change.
M16C/26 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
UART2 special mode register 4
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
U2SMR4
Address
0374 16
When reset
0016
Bit
symbol
Bit name
Function
STAREQ Start condition
generate bit (Note)
RSTAREQ ^{Restart condition}
generate bit (Note)
STPREQ ^{Stop condition}
generate bit (Note)
STSPSEL _{SCL,SDA output}
select bit
ACKD ACK data bit
ACKC
SCLHI
SWC9
ACK data output
enable bit
SCL output stop
enable bit
Final bit L hold enable
bit
0 : Clear
1 : Start
0 : Clear
1 : Start
0 : Clear
1 : Start
0 : Ordinal block
1 : Start/stop condition generate block
0 : ACK
1 : NACK
0 : SI/O data output
1 : ACKD output
0 : Disabled
1 : Enabled
0 : SCL L hold disabled
1 : SCL L hold enabled
Note: When start condition is generated,these bits automatically become 0 .
Figure 1.15.10. Serial I/O-related registers (7)
RW
118
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