NEC uPD6121/6122 Remote Control Transmission CMOS IC Datasheet

The µPD6121, 6122 are infrared remote control transmission ICs using the NEC transmission format that are ideally suited for TVs, VCRs, audio equipment, air conditioners, etc.

Brand: NEC
Category: Other Electronics
Document type: Datasheet
Language: English
Pages: 28
File format: PDF
File size: 160 KB
Published: 07 June, 2012
Updated: 30 September, 2023
MD5 checksum: 1C0342038F484F7373316C55E6A377A2
PDF: NEC uPD6121/6122 Remote Control Transmission CMOS IC Datasheet PDF

About this manual

This document is a technical datasheet for the NEC uPD6121 and uPD6122, which are CMOS integrated circuits designed for infrared remote control transmission. These chips utilize the NEC transmission format and support up to 65,536 custom codes configured via external diodes and resistors.

What's inside

Features
Ordering Information
Pin Configuration
Block Diagram
Differences Between Products
Pin Functions
NEC Transmission Format
Custom Code Setting

Specifications

Operating voltage	2.0 to 3.3 V
Standby current	1 uA Max.
Maximum custom codes	65,536
Data codes (uPD6121)	32 codes
Data codes (uPD6122)	64 codes

Frequently asked questions

What transmission format do these ICs use?

They use the NEC transmission format.

How are custom codes set?

Custom codes are set by combining external diodes and resistors.

What is the function of the SEL pin?

It allows expanding data code capacity from 32 to 64 for uPD6121 or 3 to 128 for uPD6122.

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