upd78f0114hgb-8es-a Renesas Electronics Corporation., upd78f0114hgb-8es-a Datasheet - Page 254

• Manufacturer Part Number: upd78f0114hgb-8es-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) Communication operation
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1. Data length: 8 bits, Parity: Even parity, Stop bit: 1 bit, Communication data: 55H
2. Data length: 7 bits, Parity: Odd parity, Stop bit: 2 bits, Communication data: 36H
3. Data length: 8 bits, Parity: None, Stop bit: 1 bit, Communication data: 87H
(a) Format and waveform example of normal transmit/receive data
Figures 12-6 and 12-7 show the format and waveform example of the normal transmit/receive data.
One data frame consists of the following bits.
The character bit length, parity, and stop bit length in one data frame are specified by asynchronous serial
interface operation mode register 0 (ASIM0).
Start bit ... 1 bit
Character bits ... 7 or 8 bits (LSB first)
Parity bit ... Even parity, odd parity, 0 parity, or no parity
Stop bit ... 1 or 2 bits
Start
Start
Start
Figure 12-7. Example of Normal UART Transmit/Receive Data Waveform
D0
Start
D0
bit
D0
Figure 12-6. Format of Normal UART Transmit/Receive Data
D0
D1
D1
D1
D1
CHAPTER 12 SERIAL INTERFACE UART0
D2
D2
D2
D2
User’s Manual U16961EJ4V0UD
D3
D3
Character bits
D3
1 data frame
1 data frame
1 data frame
D3
1 data frame
D4
D4
D4
D5
D4
D5
D6
D5
D5
D7
D6
D6
Parity
D6
bit
D7
Parity
Stop bit
D7
Parity
Stop
Stop
Stop
Stop