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13.4. Data Format
The UART3 allows setting of the data length, stop bit length, and parity function. The start bit length is
fixed at one bit.
Data length
With the UART3_nMOD.CHLN bit, the data length can be set to seven bits (UART3_nMOD.CHLN bit =
0) or eight bits (UART3_nMOD.CHLN bit = 1).
Stop bit length
With the UART3_nMOD.STPB bit, the stop bit length can be set to one bit (UART3_nMOD.STPB bit =
0) or two bits (UART3_nMOD.STPB bit = 1).
Parity function
The parity function is configured using the UART3_nMOD.PREN and UART3_nMOD.PRMD bits.
UART3_nMOD.PREN bit
UART3_nMOD register
CHLN bit
STPB bit
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
S1C31D50 TECHNICAL MANUAL
(Rev. 1.00)
Table 13.4.1 Parity Function Setting
UART3_nMOD.PRMD bit
1
1
0
PREN bit
D0 D1 D2 D3 D4 D5 D6
st
0
D0 D1 D2 D3 D4 D5 D6
st
1
D0 D1 D2 D3 D4 D5 D6
st
0
D0 D1 D2 D3 D4 D5 D6
st
1
D0 D1 D2 D3 D4 D5 D6 D7
st
0
D0 D1 D2 D3 D4 D5 D6 D7
st
1
D0 D1 D2 D3 D4 D5 D6 D7
st
0
D0 D1 D2 D3 D4 D5 D6 D7
st
1
Figure 13.4.1 Data Format
Seiko Epson Corporation
Parity function
1
Odd parity
0
Even parity
*
Non parity
st: start bit, sp: stop bit, p: parity bit
sp
p
sp
sp
sp
p
sp
sp
sp
p
sp
sp
sp
p
sp
sp
13-5
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