M38047FEHKP datasheet(199/387 Pages) RENESAS

部件名	M38047FEHKP

功能描述	8-BIT CISC SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES

PDF	387 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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199 / 387 page

2-75

APPLICATION

2.4 Serial interface

Rev.1.00 Jan 14, 2005

REJ09B0212-0100Z

3804 Group (Spec.H)

(4)

Communication (transmit/receive) using asynchronous serial I/O (UART)

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

Port P40 is used for communication control.

Figure 2.4.38 shows a connection diagram, and Figure 2.4.39 shows a timing chart.

Fig. 2.4.38 Connection diagram (Communication using UART)

Specifications : • Serial I/O1 is used (UART is selected).

• Transfer bit rate : 9600 bps (f(XIN) = 4.9152 MHz is divided by 512)

• Communication control using port P40

(The output level of port P40 is controlled by software.)

• 2-byte data is transferred from the transmitting side to the receiving side at intervals

of 10 ms generated by the timer.

Fig. 2.4.39 Timing chart (using UART)

Transmitting side

P40

Receiving side

TXDRXD

3804 group

(Spec. H)

3804 group

(Spec. H)

P40

TXD1

10 ms

D1 D2 D3

D4 D5 D6

SP(2)

D1 D2 D3

D4 D5 D6

SP(2)

• • • •

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