Transfer Data Format - Toshiba TLCS-870/C Series Manual

11. Asynchronous Serial interface (UART )

11.3 Transfer Data Format

11.3 Transfer Data Format
In UART, an one-bit start bit (Low level), stop bit (Bit length selectable at high level, by UARTCR1<STBT>), and
parity (Select parity in UARTCR1<PE>; even- or odd-numbered parity by UARTCR1<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
Note: In order to switch the transfer data format, perform transmit operations in the above Figure 11-3 sequence except
for the initial setting.
1 2
Start Bit 0
Start Bit 0
Start Bit 0
Start Bit 0
Figure 11-2 Transfer Data Format
With parity / 1 STOP bit
Figure 11-3 Caution on Changing Transfer Data Format
Frame Length
3 8
Bit 1 Bit 6
Bit 1 Bit 6
Bit 1 Bit 6
Bit 1 Bit 6
Without parity / 1 STOP bit
Without parity / 2 STOP bit
With parity / 2 STOP bit
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9 10 11
Bit 7 Stop 1
Bit 7 Stop 1 Stop 2
Bit 7 Parity Stop 1
Bit 7 Parity Stop 1
12
Stop 2