M38B53M4-059FP datasheet(143/355 Pages) MITSUBISHI

143 / 355 page

38B5 Group User’s Manual

APPLICATION

2-55

2.3 Serial I/O

Fig. 2.3.28 Control procedure

SC11 (address 001916)

SC12 (address 001A16)

SC13 (address 001C16)

SIO1DP (address 001816)

SC11 (address 001916), bit4

000000112

00XX00002

011111102

0716

SIO1CON2 (address 001A16), bit5 ?

RESET

SIO1 (address 001B16)

8 – 1

Automatic transfer RAM of

serial I/O (addresses 0F0016

to 0F0716)

Main processing

q X: This bit is not used here. Set it to “0” or “1” arbitrarily.

The time to control main routine

period has passed ?

Transmitted

data RAM

Received data

RAM

Automatic transfer RAM of

serial I/O (addresses 0F0016

to 0F0716)

Initialization

Serial I/O1 initial setting

Setting of automatic transfer function

Enabled serial I/O1

Generating certain period timing using timer’s functions

(Control so that main routine will be executed at certain

period.)

1-block data, 8 bytes, to be transmitted set in RAM

Number of transferred count set causing automatic

transfer start

(Set the number of transfer bytes – 1.)

Judgment of completion of automatic transfer

Taking received data into RAM for processing

Processing data taken into received data

RAM and preparing next transmission data in

main routine

Possible to process others during automatic transfer

(Perform part of main processing.)

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