Renesas SH7145F 1. Specifications

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 thistask example 3 bytes of serial data are received by the

SH7145, and the receive data is thentra nsmitted.T heco mmunicationformat 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 AsynchronousSerial 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 conversionformat LSB first

Contents

Main APPLICATION NOTE SH7145F Asynchronous Serial Data Transmission/Reception Summary Device for Which Operation Has Been Confirmed Contents 1. Specifications REJ06B0357-0100O/Rev.1.00 March 2004 Page 3 of 17 2 Functions Used Figure 2 SCI(ch1) Block Diagram Page Page REJ06B0357-0100O/Rev.1.00 March 2004 Page 6 of 17 3. Operation Figure 3 Data Transmission Operation SH7145F Table 3 Processing 4. Software REJ06B0357-0100O/Rev.1.00 March 2004 Page 9 of 17 Table 6 On-Chip Register Descriptions REJ06B0357-0100O/Rev.1.00 March 2004 Page10 of 17 *: Can only be cleared to 0. Setting to 1 is performed by hardware. 5. Flowcharts (1) Main Routine (2) SCI1 Initialize Routine (3) Data Receive Routine (4) Data Transfer Routine SH7145F 6. Program Listing Page Page REJ06B0357-0100O/Rev.1.00 March 2004 Page17 of 17 Keep safety first in your circuit designs! Notes regarding these materials