m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 217

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

R
R
M
e
E
3
. v
J
Figure 16.18 TxD, RxD I/O Polarity Inverse
2
0
16.2.4 TxD and RxD I/O Polarity Inverse
1
9
C
3 .
B
8 /
TxD pin output and RxD pin input are inversed. All I/O data level, including the start bit, stop bit and parity
bit, are inversed. Figure 16.18 shows TxD and RxD I/O polarity inverse.
0
1
3
0
3
J
G
4
a
NOTES:
0 -
Transfer Clock
Transfer Clock
n
o r
(1) When the IOPOL bit in the UiMR register (i=0 to 4) is set to "0" (no inverse)
(2) When the IOPOL bit in the UiMR register is set to "1" ( inverse)
3 .
1. The above applies when the UFORM bit in the UiC0 register is set to "0" (LSB
1
u
, 1
3
(no inverse)
(no inverse)
p
first), the STPS bit in the UiMR bit is set to "0" (1 stop bit) and the PRYE bit is set
to "1" (parity enabled).
1
2
(
(inverse)
(inverse)
M
0
0
RxD
3
RxD
TxD
TxD
6
2
C
i
i
i
i
Page 194
8 /
“H”
“H”
“H”
“H”
“H”
“H”
“L”
“L”
“L”
“L”
“L”
“L”
, 3
M
3
2
C
f o
8 /
ST
ST
ST
ST
4
3
8
) T
8
D
D
D
D
0
0
0
0
D
D
D
D
1
1
1
1
D
D
D
D
2
2
2
2
D
D
D
D
3
3
3
3
D
D
D
D
4
4
4
4
D
D
D
D
5
5
5
5
D
D
D
D
6
6
6
6
D
D
D
D
7
7
7
7
P
P
P
P
ST : Start bit
P : Even parity
SP : Stop bit
SP
SP
SP
SP
16. Serial I/O (UART)