RPM870-H14 查看數據表（PDF） - ROHM Semiconductor

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RPM870-H14

IrDA wireless communication transceiver IC (supports Ver. 1.2 Low Power)

ROHM Semiconductor 

Photo Link Module

zTerminal description

Pin No Terminal

1, 4

GND

2

NC

3

VCC

5

PWDOWN

Circuit

VCC

PWDOWN

6

RXD

VCC

VCC

300k

7

TXD

VCC

200K

8

LEDA

LED

RPM870-H14

Function

GND

This terminal must be left open.

VCC

For preventing from ripple noise.

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.

Receiving data output terminal

CMOS logic level input

When PWDOWN (5pin) = H, the RXD

output will be pulled up to

VCC at approximately 300kΩ.

Transmitting data input terminal

H : LED Drive (PWDOWN = L)

CMOS logic level output

Holding TXD = "H"status, LED will

be turn off approximately 48µsec.

LED ANODE terminal

Other power source can be used

difference between LEDVCC and VCC.

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