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ROHM RPM872-H14 User Guide

Summary

This ultra-compact module provides efficient IrDA Ver. 1.2 low-power infrared communication, integrating the LED, photodiode, and LSI into one single package. Designed for portable electronics such as cell phones, PDAs, and digital cameras, it guarantees minimal power consumption while maintaining versatility across various voltage levels. The accompanying manual covers everything needed to integrate the module, including detailed electrical specifications, pin functions, timing charts, and comprehensive application guidelines, making deployment reliable and easy.

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RPM872-H14

Photo Link Module

Ir DA infrared communication module RPM872-H14 RPM872-H14 is an infrared communication module for Ir DA Ver. 1.2 (Low Power). The infrared LED, PIN photo diode, and waveform shaping LSI are all integrated into one single package. This module is designed for low power consumption. The very small package makes it a perfect fit for mobile devices.

Features 1) Applied to Ir DA Ver. 1.2. (Low Power) 2) Designed for low power consumption at waiting mode (75µA). 3) Low operating voltage VCC=2.0V to 3.6V VIO=1.5V to 3.6V VLED=2.6V to 5.5V 4) Small package. 5) Power down function.

Applications Cellular phones, PDA, Digital still camera, Handy terminals, and other portable equipments.

Absolute maximum ratings (Ta=25°C) Parameter Symbol Limits Unit

Supply voltage VCC 7.0

Power dissipation Pd m W100

Operating temperature Topr −30 to +85 ˚C Storage temperature Tstg −30 to +100 ˚C

Recommended operating conditions (Ta=25°C) Parameter Symbol Min. Typ. Max. Unit

Supply voltage VCC 3.0 3.6 V2.0

VLEDA 3.0 5.5 V2.6

VIO 3.0 VCC V1.5

Rev.A 1/6

Page Summary Contents For ROHM RPM872-H14 User Guide

Page 1 RPM872-H14 Photo Link Module Ir DA infrared communication module RPM872-H14 RPM872-H14 is an infrared communication module for Ir DA Ver. 1.2 (Low Power). The infrared LED, PIN photo diode, and wavefo...
Page 2 RPM872-H14 Photo Link Module Block diagram and application circuit PWDOWN POWER PWDOWN (LEDVCC) VCC(3pin) and VLEDA(8pin) can be used on either common power source or different one. Rev.A 2/6
Page 3 RPM872-H14 Photo Link Module Terminal description Terminal Circuit Function Pin No 1, 4 GND Pin1 and Pin4 must be connected to the ground. VIO Supply voltage for I/O pins (PWDOWN, RXD, TXD) VCC Supply...
Page 4 RPM872-H14 Photo Link Module Electrical characteristics (Unless otherwise noted, VCC=3V, VLEDA=3V, VIO=3V, Ta=25°C) Parameter Symbol Min. Typ. Max. Unit Conditions Consumption Current 1 ICC1 µA VPWDOW...
Page 5 RPM872-H14 Photo Link Module Timing chart (Emitting side) TXD (7pin) less than 48 µs more than 48 µs (emitting) (emitting) (emitting) Internal LED (Light output) approximately 48 µs (Detecting side) L...
Page 6 RPM872-H14 Photo Link Module Notes 1. 1) VLEDA(8pin), VCC(3pin) and VIO(2pin) • Other power source can be used difference between VLEDA and VCC and VIO. (VIO < VCC +0.3V) 2) Caution in designing bo...
Page 7 Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject...

Manual Details

Brand ROHM
Pages 7
File Size 88.84 KB
Published July 22, 2026
2 views

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Frequently Asked Questions

What are the operating voltage ranges for this module?

VCC is 2.0V to 3.6V, VIO is 1.5V to 3.6V, and VLED is 2.6V to 5.5V.

How do I put the device into a low-power state?

Connect Pin 5 (PWDOWN) to HIGH to stop the receiving circuit and LED operation.

What are the recommended peak operating characteristics?

The peak wavelength is 850 nm, and its intensity can reach up to 26 mW/Sr at a half-angle of 15°.