tmp86fh46bng TOSHIBA Semiconductor CORPORATION, tmp86fh46bng Datasheet - Page 146

• Manufacturer Part Number: tmp86fh46bng
• Description: 8 Bit Microcontroller Tlcs-870/c Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

11.9
Status Flag
11.9.6
TDBUF
TXD pin
UARTSR<TBEP>
INTTXD interrupt
Shift register
Figure 11-10 Generation of Transmit End Flag and Transmit Data Buffer Empty
Shift register
TXD pin
UARTSR<TBEP>
UARTSR<TEND>
INTTXD interrupt
UARTSR<TEND> is set to “1”. The UARTSR<TEND> is cleared to “0” when the data transmit is started af-
ter writing the TDBUF.
When data are transmitted and no data is in TDBUF (UARTSR<TBEP> = “1”), transmit end flag
Transmit End Flag
***** 1
Figure 11-9 Generation of Transmit Data Buffer Empty
xxxx
***
1xx
1xxxx0
Start
****
Data write
* 1xxxx
1x
Bit 0
yyyy
***** 1
Stop
Page 128
Data write for TDBUF
Final bit
**** 1x
***** 1
Stop
After reading UARTSR writing TDBUF
clears TBEP.
1yyyy0
1yyyy0
Start
TMP86FH46BNG
zzzz
Data write
* 1yyyy
Bit 0