
SH7145F
Synchronous Serial Data Transmission
REJ06B0352-0100O/Rev.1.00 March 2004 Page 2 of 16
1. Specifications
As shown in figure 1, synchronous serial data transmission is performed using channel 0 (ch0) of
the SCI module of the SH7145F. In this task example 3 bytes of serial data are transmitted from
the SH7145. The communication format is 8-bit fixed data length, LSB first, with a logical bit rate
of 250,000 bps.
SH7145
TXD RXD
Serial data
transfer
target MCU
SCI
(ch0)
3.3 V 3.3 V
SCK SCK
Synchronous clock
Serial data
Figure 1 Synchronous Serial Data Transmission by SH7145
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