CHAPTER 14 ASYNCHRONOUS SERIAL INTERFACE (UART)
User’s Manual U16896EJ2V0UD
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SBF is output with 13-bit length (default)
SBF is output with 14-bit length
SBF is output with 15-bit length
SBF is output with 16-bit length
SBF is output with 17-bit length
SBF is output with 18-bit length
SBF is output with 19-bit length
SBF is output with 20-bit length
SBL02
1
1
1
0
0
0
0
1
SBL01
0
1
1
0
0
1
1
0
SBL00
1
0
1
0
1
0
1
0
SBF transmission output width control
MSB
LSB
UDIR0
0
1
First-bit specification
Normal output of TXD0 pin
Inverted output of TXD0 pin
TXDLV0
0
1
Enables/disables inverting TXD0 pin output
Cautions 1. In the case of an SBF reception error, the mode returns to the SBF reception mode. The
status of the SBRF0 bit is held (1).
2. Before setting the SBRT0 bit, make sure that the UARTE0 and RXE0 bits = 1. After setting
the SBRT0 bit to 1, do not clear it to 0 before SBF reception is completed (before an
interrupt request signal is generated).
3. The read value of the SBRT0 bit is always 0. The SBRT0 bit is automatically cleared to 0
after SBF reception has been correctly completed.
4. Before setting the SBTT0 bit to 1, make sure that the UARTE0 and TXE0 bits = 1. After
setting the SBTT0 bit to 1, do not clear it to 0 before SBF transmission is completed
(before an interrupt request signal is generated).
5. The read value of the SBTT0 bit is always 0. The SBTT0 bit is automatically cleared to 0 at
the end of SBF transmission.
6. Before rewriting the UDIR0 and TXDLV0 bits, clear the TXE0 and RXE0 bits to 0.
<R>
<R>
<R>
<R>
<R>
<R>
