7733 datasheet(442/940 Pages) RENESAS

No. de pieza	7733

Descripción Electrónicos	16-BIT SINGLE-CHIP MICROCOMPUTER

PDF	940 Pages

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Fabricante Electrónico	RENESAS [Renesas Technology Corp]

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442 / 940 page

APPLICATIONS

7733 Group User’s Manual

17–35

(3) Approximate flowchart

17.2 Serial I/O

Fig. 17.2.12 Approximate flowchart (1)

Whether transmission of the preceding data

has started or not is determined.

(Whether the next data can be set to the

UART1 transmission buffer register or not

is determined.)

UART1 transmission interrupt routine

[F_DATAOUT]

“1”

Flag used to determine whether

a transmission interrupt

request has occurred or not: “1”

RTI

[F_DATAOUT]: Flag used to determine whether a transmission

interrupt request has occurred or not.

[TRA_DATA]: RAM where transmit data is stored.

Main routine

[F_DATAOUT]

= “1” ?

[F_DATAOUT]

“0”

UART1 transmission buffer register

[TRA_DATA]

(

address 3A16)

1: Transmission interrupt request has occurred.

The flag used to determine whether a

transmission interrupt request has

occurred or not is initialized.

Transmit data is set.

7733 Datasheet(PDF) 442 Page - Renesas Technology Corp