Single Bidirectional Infrared LED Communication Port Reference Design


Design files


The TIDA-01212 reference design provides a ultra-low power yet simple and low-cost solution for adding a bi-directional IrDA PHY link at 9600 bps to any Smart Metering or sub-metering device. Using a single IR LED, a resistor and internal 1.27 V reference, controlled by an optimized software inside the Sensor Controller engine, both transmitter and receiver for IrDA PHY @ 9600 bps is implemented. This design approach can be used with the TI CC13xx and CC26xx  SimpleLink™ Wireless MCUs to reduce cost by replacing legacy optical IrDA PHY modules with two separate LEDs.

  • Single bidirectional IrDA PHY @ 9600 bps implementation by CC1350 SimpleLink Wireless MCU
  • Only 2 I/Os needed; sensitivity (or link range) can be improved with two additional I/Os for implementing an external voltage reference.
  • Sensor Controller Engine senses the Capacitive Touch PCB area and polls the IR LED once per second (adjustable period)
  • Connects to TIDA-00848 for adding an IrDA PHY functionality (both transmit and receive) with a single IR LED
  • Average current: 1.73 uA @ 3.0 V (LCD OFF); 975 uA @ 3.0 V (80 LCD segments ON) under TI RTOS framework
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUCF0.PDF (2908 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Analog temperature sensors

LMT70A±0.1°C Matching Accuracy Precision Analog Temperature Sensor

Data sheet: PDF | HTML
Sub-1 GHz wireless MCUs

CC1310SimpleLink™ 32-bit Arm Cortex-M3 Sub-1 GHz wireless MCU with 128kB Flash

Data sheet: PDF | HTML
Sub-1 GHz wireless MCUs

CC1350SimpleLink™ 32-bit Arm Cortex-M3 multiprotocol Sub-1 GHz & 2.4 GHz wireless MCU with 128kB Flash

Data sheet: PDF | HTML

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Technical documentation

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* Design guide Single Bidirectional Infrared LED Communication Port Reference Design Nov. 28, 2016

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