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SH7145F

Asynchronous Serial Data Transmission/Reception

REJ06B0357-0100O/Rev.1.00 March 2004 Page 2 of 17

1. Specifications

As shown in figure 1, asynchronous serial data transmission is performed using channel 1 (ch1) of

the SCI module of the SH7145F. In this task example 3 bytes of serial data are received by

the

SH7145,

and the receive data is then transmitted. The communication format is 192,000 bps, 8-

bit, one stop bit, and no parity.

SH7145

Serial data

transfer

target MCU

TXD

RXD

SCI

(ch1)

3.3 V 3.3 V

TXD

RXD

Figure 1 Asynchronous Serial Data Transmission/Reception by SH7145

Table 1 Asynchronous Serial Data Transmission Format

Format Item Setting

Bit rate 19200 bps

Data length 8 bits

Parity bit No

Stop bit 1 bit

Serial/parallel conversion format LSB first

1 2 3 4 5 6 7 ... 16 17

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