M38B53M4-059FP datasheet(147/355 Pages) MITSUBISHI

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M38B53M4-059FP датащи(PDF) 147 Page - Mitsubishi Electric Semiconductor

номер детали	M38B53M4-059FP

подробное описание детали	8-BIT SINGLE-CHIP MICROCOMPUTER

PDF	355 Pages

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производитель	MITSUBISHI [Mitsubishi Electric Semiconductor]

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38B5 Group User’s Manual

APPLICATION

2-59

2.3 Serial I/O

2.3.8 Serial I/O2 application examples

(1)

Communication (transmission/reception) using clock synchronous serial I/O

Outline : 2-byte data is transmitted and received, using the clock synchronous serial I/O.

The SRDY2 signal is used for communication control.

Figure 2.3.33 shows a connection diagram, and Figure 2.3.34 shows a timing chart.

Fig. 2.3.33 Connection diagram

Specifications : • Use of serial I/O2 in clock synchronous serial I/O

• Synchronous clock frequency : 125 kHz (f(X IN) = 4 MHz is divided by 32)

• Use of SRDY2 (receivable signal)

• The reception side outputs the SRDY2 signal at intervals of 2 ms (generated by the

timer), and 2-byte data is transferred from the transmission side to the reception

side.

Fig. 2.3.34 Timing chart

SRDY2

TxD

D0 D1 D2 D3 D4 D5 D6 D7

2 ms

SCLK21

...

P40/INT0

SCLK21

TxD

38B5 group

SRDY2

SCLK21

RxD

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