tmp86c847iug TOSHIBA Semiconductor CORPORATION, tmp86c847iug Datasheet - Page 135

• Manufacturer Part Number: tmp86c847iug
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

TDBUF
TXD pin
UARTSR<TBEP>
INTTXD interrupt
Shift register
11.9.6 Transmit End Flag
TXD pin
UARTSR<TBEP>
UARTSR<TEND>
INTTXD interrupt
Shift register
Figure 11-10 Generation of Transmit End Flag and Transmit Data Buffer Empty
UARTSR<TEND> is set to “1”. The UARTSR<TEND> is cleared to “0” when the data transmit is started
after writing the TDBUF.
When data are transmitted and no data is in TDBUF (UARTSR<TBEP> = “1”), transmit end flag
***** 1
xxxx
Figure 11-9 Generation of Transmit Data Buffer Empty
***
1xx
1xxxx0
Start
****
Data write
* 1xxxx
1x
Bit 0
yyyy
***** 1
Stop
Page 127
Data write for TDBUF
Final bit
**** 1x
***** 1
Stop
After reading UARTSR writing TDBUF
clears TBEP.
1yyyy0
1yyyy0
Start
zzzz
TMP86C847IUG
Data write
* 1yyyy
Bit 0