Operation; Figure 13-7: Asynchronous Serial Interface Transmit/Receive Data Format - NEC V850E/CA2 JUPITER Preliminary User's Manual

13.2.5 Operation

(1) Data format
Full-duplex serial data transmission and reception can be performed.
The transmit/receive data format consists of one data frame containing a start bit, character bits, a
parity bit, and stop bits as shown in Figure 13-7.
The character bit length within one data frame, the type of parity, and the stop bit length are
specified according to the asynchronous serial interface mode register (ASIMn) (n = 0, 1).
Also, data is transferred with LSB first.

Figure 13-7: Asynchronous Serial Interface Transmit/Receive Data Format

Start
• Start bit ··· 1 bit
• Character bits ··· 7 bits or 8 bits
• Parity bit ··· Even parity, odd parity, 0 parity, or no parity
• Stop bits ··· 1 bit or 2 bits
Chapter 13 Serial Interface Function
D0 D1 D2 D3
bit
Character bits
Preliminary User's Manual U15839EE1V0UM00
1 data frame
D4 D5 D6 D7
Parity
Stop bits
bit
375