UPD78F0138 NEC, UPD78F0138 Datasheet - Page 316

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

316
Figure 14-16 shows an example of the continuous transmission processing flow.
Remark TXB6:
ASIF6: Asynchronous serial interface transmission status register 6
TXBF6: Bit 1 of ASIF6 (transmit buffer data flag)
TXSF6: Bit 0 of ASIF6 (transmit shift register data flag)
Figure 14-16. Example of Continuous Transmission Processing Flow
Transmit buffer register 6
executed necessary
completion interrupt
executed necessary
CHAPTER 14 SERIAL INTERFACE UART6
number of times?
number of times?
Transmission
Set registers.
Write TXB6.
Write TXB6.
Read
TXBF6 = 0?
Transfer
Transfer
occurs?
ASIF6
User’s Manual U16228EJ2V0UD
Yes
No
No
Yes
No
Yes
No
Yes
transmission processing
Completion of
Read
TXSF6 = 0?
ASIF6
Yes
Yes
No