M16C6N4 Datasheet, PDF (168/406 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

Under development
This document is under development and its contents are subject to change.
M16C/6N Group (M16C/6N4)
15. Serial Interface
UARTi Special Mode Register 4 (i = 0 to 2)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
U0SMR4 to U2SMR4
Address
01ECh, 01F0h, 01F4h
After Reset
00h
Bit
Symbol
Bit Name
STAREQ
Start Condition
Generate Bit ⁽¹⁾
Restart Condition
RSTAREQ _{Generate Bit (1)}
STPREQ
Stop Condition
Generate Bit ⁽¹⁾
STSPSEL
SCL,SDA Output
Select Bit
ACKD ACK Data Bit
ACKC
SCLHI
ACK Data Output
Enable Bit
SCL Output Stop
Enable Bit
SWC9 SCL Wait Bit 3
NOTE:
1. Set to "0" when each condition is generated.
Function
RW
0 : Clear
1 : Start
RW
0 : Clear
1 : Start
RW
0 : Clear
1 : Start
RW
0 : Start and stop conditions not output
1 : Start and stop conditions output
RW
0 : ACK
1 : NACK
RW
0 : Serial interface data output
1 : ACK data output
RW
0 : Disabled
1 : Enabled
RW
0 : SCL "L" hold disabled
1 : SCL "L" hold enabled
RW
Figure 15.10 U0SMR4 to U2SMR4 Registers
Rev.2.30 Oct 24, 2005 page 150 of 376
REJ09B0009-0230