IRC-80S Field Re-programmable IR Remote Control Decoder Chip
Download Datasheet

• Field re-programmable (learning) up to maximum of 30 keys using a standard Sony TV/VCR or Universal remote control.


• Outputs recognised keys to serial port (9600 Bps) for MCU interfacing. 30 keys control achieved thru serial port interface to a microcontroller or microprocessor.


• 8-programmable digital I/Os. Direct control up to 8 digital outputs or relays (using a relay driver board). Each digital output are able to sink/source as high as 25 mA.


• Interrupt output.


• Fixed 1MHz clock output.


• Setup options for Pulse outputs, Toggle outputs and Dual Mode Outputs.


• Programmable as inverting or non-inverting outputs.


• LED status indicator output.


• Low power and chip operates from 3.3V to 5.5V.


• Special decoding method also allow some other types of remote control to be programmed and use (Tested to work with some other remotes!).

1. Remote control for Instrumentation and Process control applications (safety).
2. Multimedia applications like VCD/DVD player, Audio Preamplifier..etc.
3. Lighting dimming & fan speed control in home appliances application.
4. Home automation.
5. Robotics, hobby & educational projects.

This is a field re-programmable, learning Infra-Red remote control decoder chip with a serial output and eight digital outputs. You can re-program up to 30 keys, and for as many times as you like. There are eight ready to use outputs which you can connect directly to LEDs, buzzers or even an array of transistor to drive relays, for example. These eight (8) outputs corresponds to the first eight pre-programmed keys. User can configure the outputs to be in "Toggle mode" or "Pulse mode". In Toggle mode the outputs will toggle state from HIGH (logic 1) to LOW (logic 0) then to HIGH again if the same key is pushed twice. Under "Pulse mode", the output will go from normally LOW to HIGH (non-inverting mode), stay at High state for 100ms before it goes back to LOW again for a single key press. You can configure the device to operate with both output type in Dual Mode. Under Dual mode, OUT1-OUT4 output pins will set to be Toggle Outputs. The remaining outputs, OUT5-OUT8 will be configured as Pulse Outputs. The outputs can also be programmed as inverting or non-inverting outputs. This is done by setting up the OUT_MODE pin and the PGM pin shorted to 0V, then enters programming mode. Now the outputs will be internally programmed to be inverted (0V at OUT_MODE pin during programming) or non-inverted (pulled high at OUT_MODE pin during programming).

To decode up to thirty (30) keys, you can read the IRC-08S serial output pin which is fixed with a transmission baud rate at 9600 Bps (8-N-1). If key '1' is recognised, the device will output ASCII character "1" to the serial port, the next key is "2"....key '10' will output "A"....and lastly key 30 will output "U". This make it so simple to interface with any microcontroller or microprocessor systems. In addition, a negative-edge trigger interrupt output is also available to interrupt your MCU when a valid key is received. Moreover, a 1MHz clock signal is also provided to clock the MCU or logic devices connected to the IRC-80S chip.

A status LED output is also included as an indicator option. You can enter programming mode by setting the "PGM" jumper and then power up the device. The LED connected to this pin will blink and then stay illuminated, waiting for user to push the first key to "learn". When it is accepted, the LED will blink twice and then waits for the next key. The cycle repeats until all 30 keys are programmed. (You can exit programming at any point of time. Let's say you only want 3 keys to be programmed. After programming the 3rd key, you can remove the power from the device and also the PGM jumper, then you can start using the device by repowering it again. As simple as that!) The decoded data are stored in the internal EEPROM of the device. After programming, you can straight away test the device! You can now remove the "PGM" jumper and the next time you remove power and then reapply back power to the device, the IRC-80S chip is ready to decoder (LED will blink once but will not stay illuminated when powering up). It will recognise you earlier pre-programmed keys! The LED will blink once if it reconised your key in normal running mode.

The IRC-80S Chip requires no external oscillator or crystal to function, reducing overall circuit noise considerably, and of course manufacturing cost! It comes in a standard 18-pin PDIP and SOIC (for OEM quantity) package.



Pricing & Availability:

• IRC-80S Chip (18-pin PDIP)
  1+ pcs/order - MYR 38.00 each.
  10+ pcs/order - MYR 35.00 each.
  50+ pcs/order - MYR 33.00 each.
  (Please contact me for OEM and large order quantity prices.)