UPD78F0838 Renesas Electronics Corporation., UPD78F0838 Datasheet - Page 398

• Manufacturer Part Number: UPD78F0838
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

396
Cautions 1. In the case of an SBF reception error, the mode returns to the SBF reception mode. The
TXDLV60
Figure 12-17. Format of Asynchronous Serial Interface Control Register 60 (ASICL60) (2/2)
SBL620
DIR60
1
1
1
0
0
0
0
1
0
1
0
1
2. Before setting the SBRT60 bit, make sure that bit 7 (POWER60) and bit 5 (RXE60) of ASIM60 =
3. The read value of the SBRT60 bit is always 0. SBRT60 is automatically cleared to 0 after SBF
4. Before setting the SBTT60 bit to 1, make sure that bit 7 (POWER60) and bit 6 (TXE60) of
5. The read value of the SBTT60 bit is always 0. SBTT60 is automatically cleared to 0 at the end
6. Do not set the SBRT60 bit to 1 during reception, and do not set the SBTT60 bit to 1 during
7. Before rewriting the DIR60 and TXDLV60 bits, clear the TXE60 and RXE60 bits to 0.
8. When the TXDLV60 bit is set to 1 (inverted TxD60 output), the TxD60/P13/SEG23/TIOP30
Note
status of the SBRF60 flag is held (1).
1. After setting the SBRT60 bit to 1, do not clear it to 0 before SBF reception is completed
(before an interrupt request signal is generated).
reception has been correctly completed.
ASIM60 = 1. After setting the SBTT60 bit to 1, do not clear it to 0 before SBF transmission is
completed (before an interrupt request signal is generated).
of SBF transmission.
transmission.
pin cannot be used as a general-purpose port, regardless of the settings of POWER60 and
TXE60. When using the TxD60/P13/SEG23/TIOP30
TXDLV60 bit to 0 (normal TxD60 output).
MSB
LSB
Normal output of T
Inverted output of T
SBL610
The TxD60/P13/SEG23/TIOP30 pin is selectable with input switch control (ISC) register.
See Figure 12-19. Format of Input Switch Control Register (ISC) for details.
0
1
1
0
0
1
1
0
CHAPTER 12 SERIAL INTERFACES UART60 AND UART61
SBL600
X
X
D60
1
0
1
0
1
0
1
0
D60
Preliminary User’s Manual U19748EJ1V0UD
SBF is output with 13-bit length.
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.
Enables/disables inverting T
First-bit specification
SBF transmission output width control
Note
X
D6n output
pin as a general-purpose port, clear the
Note