NEC 78K0/KD1 Series User Manual page 296

Figure 14-15 shows the timing of starting continuous transmission, and Figure 14-16 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
296
CHAPTER 14 SERIAL INTERFACE UART6
Figure 14-15. 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
Preliminary User's Manual U16315EJ1V0UD
Parity Stop Start Data (2)
Data (3)
Data (2)
Parity Stop Start
Data (3)