NEC 78K0S/KB1+ User Manual page 204

Figure 11-17 shows the timing of starting continuous transmission, and Figure 11-18 shows the timing of
ending continuous transmission.
T D6
X
INTST6
TXB6 FF
TXS6 FF
TXBF6
TXSF6
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 T D6:
X
INTST6: Interrupt request signal
TXB6:
TXS6:
ASIF6:
TXBF6: Bit 1 of ASIF6
TXSF6: Bit 0 of ASIF6
204
CHAPTER 11 SERIAL INTERFACE UART6
Figure 11-17. Timing of Starting Continuous Transmission
Start Data (1)
Data (1) Data (2)
Data (1)
Note
T D6 pin (output)
X
Transmit buffer register 6
Transmit shift register 6
Asynchronous serial interface transmission status register 6
User's Manual U17446EJ3V1UD
Parity Stop Start Data (2)
Data (3)
Data (2)
Parity Stop Start
Data (3)