TMP88PH40NG Datasheet, PDF (114/158 Pages) Toshiba Semiconductor – 8 Bit Microcontroller

12. Asynchronous Serial interface (UART)
12.3 Transfer Data Format
TMP88PH40NG
12.3 Transfer Data Format
In UART, an one-bit start bit (Low level), stop bit (Bit length selectable at high level, by UARTCRA<STBT>),
and parity (Select parity in UARTCRA<PE>; even- or odd-numbered parity by UARTCRA<EVEN>) are added to
the transfer data. The transfer data formats are shown as follows.
PE STBT
0
0
0
1
1
0
1
1
Frame Length
1
2
3
8
9
10
11
12
Start
Bit 0
Bit 1
Bit 6
Bit 7 Stop 1
Start
Bit 0
Bit 1
Bit 6
Bit 7 Stop 1 Stop 2
Start
Bit 0
Bit 1
Bit 6
Bit 7 Parity Stop 1
Start
Bit 0
Bit 1
Bit 6
Bit 7 Parity Stop 1 Stop 2
Figure 12-2 Transfer Data Format
Without parity / 1 STOP bit
With parity / 1 STOP bit
Without parity / 2 STOP bit
With parity / 2 STOP bit
Figure 12-3 Caution on Changing Transfer Data Format
Note: In order to switch the transfer data format, perform transmit operations in the above Figure 12-3 sequence except
for the initial setting.
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