tmp88fw45afg TOSHIBA Semiconductor CORPORATION, tmp88fw45afg Datasheet - Page 211

• Manufacturer Part Number: tmp88fw45afg
• Description: 8 Bit Microcontroller Tlcs-870/x Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

16.9.6
TDBUF2
TXD pin
UARTSR2<TBEP>
INTTXD interrupt
Shift register
Figure 16-10 Generation of Transmit End Flag and Transmit Data Buffer Empty
Shift register
TXD pin
UARTSR2<TBEP>
UARTSR2<TEND>
INTTXD interrupt
UARTSR2<TEND> is set to “1”. The UARTSR2<TEND> is cleared to “0” when the data transmit is stated after
writing the TDBUF2.
When data are transmitted and no data is in TDBUF2 (UARTSR2<TBEP> = “1”), transmit end flag
Transmit End Flag
***** 1
Figure 16-9 Generation of Transmit Data Buffer Empty
xxxx
***
1xx
1xxxx0
Start
****
Data write
* 1xxxx
1x
Bit 0
yyyy
***** 1
Stop
Page 197
Data write for TDBUF2
Final bit
**** 1x
***** 1
Stop
After reading UARTSR2 writing
TDBUF2 clears TBEP.
1yyyy0
1yyyy0
Start
TMP88FW45AFG
zzzz
Data write
* 1yyyy
Bit 0