Uart Mode; Si/O3, Si/O4 - Renesas M16C FAMILY series Hardware Manual

16-bit single-chip microcomputer
Hide thumbs Also See for M16C FAMILY series:
Table of Contents

Advertisement

M
1
6
C
2 /
8
G
o r
u
p
(
M
1
6
C

20.8.2 UART Mode

20.8.2.1 Special Mode 1 (I
When generating start, stop and restart conditions, set the STSPSEL bit in the U2SMR4 register to "0"
and wait for more than half cycle of the transfer clock before setting each condition generate bit
(STAREQ, RSTAREQ and STPREQ) from "0" to "1".
20.8.2.2 Special Mode 2
If a low-level signal is applied to the SD pin when the IVPCR1 bit in the TB2SC register is set to "1"
(three-phase output forcible cutoff by input on SD pin enabled), the RTS
impedance state.
20.8.2.3 Special Mode 4 (SIM Mode)
A transmit interrupt request is generated by setting the U2C1 register U2IRS bit to "1" (transmission
complete) and U2ERE bit to "1" (error signal output) after reset. Therefore, when using SIM mode, be
sure to clear the IR bit to "0" (no interrupt request) after setting these bits.

20.8.3 SI/O3, SI/O4

The SOUTi default value which is set to the SOUTi pin by the SMi7 bit approximately 10ns may be output
when changing the SMi3 bit from "0" (I/O port) to "1" (SOUTi output and CLK function) while the SMi2 bit
in the SiC (i=3 and 4) to "0" (SOUTi output) and the SMi6 bit is set to "1" (internal clock). And then the
SOUTi pin is held high-impedance.
If the level which is output from the SOUTi pin is a problem when changing the SMi3 bit from "0" to "1", set
the default value of the SOUTi pin by the SMi7 bit.
R
e
. v
2
0 .
0
J
a
. n
3
, 1
2
0
0
7
R
E
J
0
9
B
0
0
4
7
0 -
2
0
0
2 /
, 8
M
1
6
C
2 /
8
) B
2
C bus Mode)
_____
page 368
f o
3
8
5
_____
________
20. Precautions
and CLK
pins go to a high-
2
2

Advertisement

Table of Contents
loading

This manual is also suitable for:

Tiny seriesM16c series

Table of Contents