UM1548 Datasheet, PDF (1/14 Pages) STMicroelectronics – IR remote trasmitter STEVAL-IHM037V1

UM1548
User manual
IR remote trasmitter STEVAL-IHM037V1
Introduction
The IR transmitter solution features three buttons which can be used to transmit three
unique IR commands for various IR remote control applications. It is a direct implementation
of the AN2957 application note, ‘Implementing an RC5 infrared transmitter using the IR
timer modulator of the STM8L101xx microcontroller’. An STM8L101xx low power MCU is
used to implement this design. The existing firmware, which is supplied with the application
note, was modified slightly to accommodate for the three keys present in the design which
are used to control speed-up, speed-down and power-on/off toggle operations. The circuit
runs on a CR2032 coin cell battery and is designed to fit into a small key fob type enclosure.
Figure 1. IR remote transmitter STEVAL-IHM037V1
This document explains the different parts and functions of the IR remote transmitter.
December 2012
Doc ID 023257 Rev 1
1/14
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