Operation In Asynchronous Mode (Operation Mode 0 Or Operation Mode1) - Fujitsu F2MC-16LX Hardware Manual

16-bit microcontroller mb90330 series

Hide thumbs Also See for F2MC-16LX:

Table of Contents

CHAPTER 21 UART

Operation in Asynchronous Mode (Operation Mode 0 or

Operation Mode1)

The UART uses asynchronous transfer when used in operation mode 0 (normal mode)

or operation mode 1 (multiprocessor mode).

Operation in Asynchronous Mode

Format of transmit/receive data

Sending and receiving always start with the start bit ("L" Level), specified data bit length is sent and

received, and end with the stop bit ("H" Level).

For use in operation mode 0, select a data length of seven or eight bits. You can select whether to use the

In operation mode 1, the data length is fixed at 8 bits. There is no parity bit. The address/data bit (SCR0 to

SCR3:A/D) is added as bit 9.

Figure 21.7-1 shows the data formats for sending and receiving in the asynchronous mode.

Figure 21.7-1 Data Format for Sending and Receiving (Operation Mode 0 and 1)

[Operation mode 0]

[Operation mode 1]

: Parity bit

: Address/Data bit