CHAPTER 9 SERIAL INTERFACE 00
User's Manual U11919EJ3V0UM00
144
(3)
Cautions related to UART mode
(a) When bit 7 (TXE00) of asynchronous serial interface mode register 00 (ASIM00) is cleared during
transmission, be sure to set transmit shift register 00 (TXS00) to FFH, then set TXE00 to 1 before
executing the next transmission.
(b) When bit 6 (RXE00) of asynchronous serial interface mode register 00 (ASIM00) is cleared during
reception, receive buffer register 00 (RXB00) and receive completion interrupt (INTSR) are as follows.
Parity
RxD Pin
RXB00
INTSR
<3>
<1>
<2>
When RXE00 is set to 0 at a time indicated by <1>, RXB00 holds the previous data and INTSR is not
generated.
When RXE00 is set to 0 at a time indicated by <2>, RXB00 renews the data and INTSR is not generated.
When RXE00 is set to 0 at a time indicated by <3>, RXB00 renews the data and INTSR is generated.
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Summary of Contents for UPD789026 Series
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