UPD780078 Datasheet, PDF (304/592 Pages) NEC – 8-Bit Single-Chip Microcontrollers

CHAPTER 15 SERIAL INTERFACE UART2
(2) Communication operation
(a) Data format
Figure 15-23 shows the format of transmit/receive data.
Figure 15-23. Example of Transmit/Receive Data Format in Infrared Data Transfer (IrDA) Mode
(1) IrDA standard format
(Character bit: 8 bits, Parity bit: None, Stop bit: 1 bit, Communication data: 55H)
1 data frame
Character bit
Start
Stop
bit
D0
D1
D2
D3
D4
D5
D6
D7 _bit
Bit time
Pulse width
(2) Other format
(Character bit: 7 bits, Parity bit: Even parity, Stop bit: 2 bits, Communication data: 55H)
1 data frame
Character bit
Start
bit
D0 D1 D2 D3 D4 D5 D6 Parity
Stop
bit
Bit time
Pulse width
304
User’s Manual U14260EJ3V1UD