upd78f0103 Renesas Electronics Corporation., upd78f0103 Datasheet - Page 220

• Manufacturer Part Number: upd78f0103
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) Communication operation
220
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 11-6 and 11-7 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
CHAPTER 11 SERIAL INTERFACE UART0 ( PD780102, 780103, 78F0103 ONLY)
Figure 11-7. Example of Normal UART Transmit/Receive Data Waveform
D0
Start
D0
bit
D0
Figure 11-6. Format of Normal UART Transmit/Receive Data
D0
D1
D1
D1
D1
D2
D2
D2
D2
User’s Manual U15836EJ5V0UD
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