ELM339
ELM339 is INFRARED REMOTE CONTROL manufactured by ELM.
Description
The ELM339 is a plete remote control decoder in an 8 pin package. With the addition of a standard infrared receiver module, three individual outputs can be simultaneously controlled using a television remote control transmitter.
This circuit responds to Sony™ television control codes, chosen because most universal remotes default to them when initially powered up. The ELM339 continuously monitors the stream of data from an infrared receiver module looking for these Sony type remote control codes. If an appropriate three digit code is detected, the selected output either turns on, turns off, or switches its state.
One of the outputs can be configured to provide a 250msec pulse output, if desired. This could be useful for interfacing to devices that expect a momentary input, such as garage door controls, alarm test buttons, and some appliances.
Applications
- Basic home automation systems
- Remote smoke alarm test initiator
- Garage door controller
- Lamp controller
Features
- Low power CMOS design
- typically 1m A at 5V
- Three separate outputs
- Pulse output for momentary controls
- Signal received output for visual feedback
- Easy interface to standard receiver modules
- Works with universal TV remote transmitters
- High current drive outputs
- up to 25 m A
Connection Diagram PDIP and SOIC (top view)
VDD 1 Out5 2 Out7 3 Pulse7 4
8 VSS 7 Out3 6 LED 5 IRRx
Block Diagram
IRRx 5
Data Decoder
LED 6
Output Driver
Output Driver
Output Driver
7 Out3 2 Out5 3 Out7
Pulse7 4
ELM339DSA
Elm Electronics
- Circuits for the Hobbyist < http://.elmelectronics./ >
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Pin Descriptions
VDD (pin 1) This pin is the positive supply pin, and should always be the most positive point in the circuit. Internal circuitry connected to this pin is used to provide power on reset of the microprocessor, so an external reset signal is not required. Refer to the Electrical Characteristics section for further information.
Out5 (pin 2) This output responds to all...
