Fujitsu MB95630H Series Hardware Manual page 484

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Table of Contents

CHAPTER 22 UART/SIO

22.6 Operations and Setting Procedure Example

The baud rate in clock asynchronous mode (UART) can be set in the following range.

Table 22.6-3 Baud Rate Setting Range in Clock Asynchronous Mode (UART)

● Transfer data format

UART can treat data only in NRZ (Non-Return-to-Zero) format. Figure 22.6-2 shows the data

The character bit length can be selected from among 5 to 8 bits depending on the settings of

SMC1n:CBL[1:0].

The stop bit length can be set to 1 or 2 bits depending on the setting of SMC1n:SBL.

The PEN bit and TDP bit in the SMC1n register can be used to enable/disable parity and to

select parity polarity.

As shown in Figure 22.6-2, the transfer data always starts from the start bit ("L" level) and ends

with the stop bit ("H" level) by performing the specified data bit length transfer with MSB first

or LSB first ("LSB first" or "MSB first" can be selected by the BDS bit in the SMC1n register).

It becomes "H" level at the idle state.

Note: 6-bit data and 7-bit data have the same data format as 5-bit data.

: Parity bit

D0 to D7: Data. The sequence can be selected from "LSB first" or "MSB first" by the

direction control register (BDS bit)

0b00 to 0b11

Figure 22.6-2 Transfer Data Format

FUJITSU SEMICONDUCTOR LIMITED

0x02 (2) to 0xFF (255)

MB95630H Series

MN702-00009-1v0-E