Reference Design for Segment LCD Control Using GPIO Pins to Increase System Flexibility
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document


The TIDA-00848 reference design provides an innovative solution for adding LCD functionality to any Smart Grid or IoT application, where seven-segment LCD operation is required but the LCD dsiplay does not have to be always on. Using a few resistors and optimized GPIO control software on a CC1310 SimpleLinkTM Wireless MCU, a seven-segment LCD support is implemented. This design approach can be used with any TI microcontrollers without an on-chip LCD controller module.

  • Innovative solution for driving Seven-segment LCD thru GPIOs by CC1310 SimpleLink Wireless MCU
  • Only 26 I/Os needed for driving 80 seg-ments of a 4-MUX, 1/3-biased LCD
  • Sensor controller peripheral senses the capacitive touch PCB area and reads out the LMT70A sensors periodically
  • 2-layer PCB With HCA form factor using a 96-segment 4-MUX LCD and cap touch area for LCD ON/OFF
  • Average current: 835 nA @ 3.6 V (LCD OFF); 338 uA @ 3.6 V (80 LCD segments ON) under TI RTOS framework

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

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

Download Design Files

TI Devices (2)

Order samples, get tools and find more information on the TI products in this reference design.

Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CC1310  SimpleLink™ 32-bit Arm Cortex-M3 Sub-1 GHz wireless MCU with 128kB Flash  Wireless connectivity  Sample & Buy View Design Kits & Evaluation Modules
LMT70A  ±0.1°C Matching Accuracy Precision Analog Temperature Sensor  Temperature sensors  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
CC1310 Download Download
Download Download
Download Download

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guide (1)
Title Type Size (KB) Date
PDF 2436 16 Jun 2016
Design files (7)
Title Type Size (KB) Date
ZIP 688 02 Jun 2016
PDF 939 02 Jun 2016
ZIP 904 02 Jun 2016
PDF 1341 02 Jun 2016
PDF 212 02 Jun 2016
PDF 161 02 Jun 2016
PDF 487 02 Jun 2016
More literature (1)
Title Type Size (KB) Date
ZIP 8946 03 Jun 2016
Related Tools & Software

Reference Designs (2)

Name Part Number Tool Type
Heat Cost Allocator with wM-Bus at 868 MHz Reference Design  TIDA-00838  Reference design 
Matched Precision Temperature Sensing Reference Design for Heat Cost Allocators  TIDA-00646  Reference design 

Support & training

TI E2E™ forums with technical support from TI engineers

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles