M38B53M4-059FP datasheet(144/355 Pages) MITSUBISHI

144 / 355 page

2-56

38B5 Group User’s Manual

APPLICATION

2.3 Serial I/O

Fig. 2.3.29 Serial I/O2 connection examples (1)

2.3.6 Serial I/O2 connection examples

(1)

Control of peripheral IC equipped with CS pin

Figure 2.3.29 shows connection examples with peripheral ICs equipped with the CS pin.

Port

SCLK21

TxD

RxD

CLK

OUT

Port

SCLK21

TxD

CLK

DATA

(1) Only transmission

(Using RxD pin as I/O port)

Port

SCLK21

TxD

RxD

CLK

OUT

Port

SCLK21

TxD

RxD

Port

CLK

OUT

CLK

OUT

38B5 group

Peripheral IC

(OSD controller etc.)

(2) Transmission and reception

38B5 group

Peripheral IC

(EEPROM etc.)

(3) Transmission and reception

(When connecting RxD with TxD)

(When connecting IN with OUT in

peripheral IC)

38B5 group V1

Peripheral IC V2

(EEPROM etc.)

(4) Connection of plural IC

38B5 group

Peripheral IC 1

Peripheral IC 2

V1: Select an N-channel open-drain output for TxD pin

output control.

V2: Use the OUT pin of peripheral IC which is an N-

channel open-drain output and becomes high impe-

dance during receiving data.

Note: “Port” means an output port controlled by software.

M38B53M4-059FP Datasheet(PDF) 144 Page - Mitsubishi Electric Semiconductor

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