UPD78F9234MC-5A4-A Datasheet, PDF (209/419 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 11 SERIAL INTERFACE UART6
Figure 11-17 shows the timing of starting continuous transmission, and Figure 11-18 shows the timing of
ending continuous transmission.
Figure 11-17. Timing of Starting Continuous Transmission
TXD6
INTST6
Start Data (1)
Parity Stop Start Data (2)
Parity Stop Start
TXB6
FF
Data (1)
Data (2)
Data (3)
TXS6
FF
TXBF6
TXSF6
Data (1)
Note
Data (2)
Data (3)
Note When ASIF6 is read, there is a period in which TXBF6 and TXSF6 = 1, 1. Therefore, judge whether
writing is enabled using only the TXBF6 bit.
Remark
TXD6: TXD6 pin (output)
INTST6: Interrupt request signal
TXB6: Transmit buffer register 6
TXS6: Transmit shift register 6
ASIF6: Asynchronous serial interface transmission status register 6
TXBF6: Bit 1 of ASIF6
TXSF6: Bit 0 of ASIF6
User’s Manual U17446EJ5V0UD
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