RPM871-E2A データシートの表示（PDF） - ROHM Semiconductor

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RPM871-E2A

IrDA Infrared communication Module

ROHM Semiconductor 

Photo Link Module

zTerminal description

Pin No Terminal

1, 4

GND

2

NC

3

VCC

5 PWDOWN

Circuit

VCC

RPM871

GND

Function

This Terminal must be left open.

VCC

For preventing from infection, connect

a capacitor between VCC (3pin) and

GND (4pin).

Power-down Control Terminal

H : POWERDOWN

L : OPERATION

CMOS Logic Level Input

When input is H, it will stop the receiving

circuit, Pin-PD current and transmitting

LED operation.

6

RXD

PWDOWN

VCC

VCC

300k

Receiving Data Output Terminal

CMOS Logic Level Output

When PWDOWN (5pin)=H, the RXD

output will be pulled up to VCC at

approximately 300kΩ.

7

TXD

VCC

200K

Transmitting Data Input Terminal

H : LED (PWDOWN=L)

CMOS Logic Level Input

Holding TXD="H" status, LED will be

turn off approximately 45µs.

8

LEDA

LED ANODE Terminal

LED

Other power source can be used

difference between LEDVCC and VCC.

LED current depends on LED load

resistance value.

Rev.B

3/7

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