TIDA-00848

Reference Design for Segment LCD Control Using GPIO Pins to Increase System Flexibility

TIDA-00848

Design files

Overview

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.

Features
  • 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
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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.

TIDUBQ7A.PDF (2437 KB)

Reference design overview and verified performance test data

TIDRM29.PDF (212 KB)

Detailed overview of design layout for component placement

TIDRM28.PDF (162 KB)

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

TIDRM31.ZIP (905 KB)

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

TIDCC90.ZIP (688 KB)

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

TIDRM32.PDF (939 KB)

PCB layer plot file used for generating PCB design layout

TIDRM30.PDF (1341 KB)

PCB layer plot file used for generating PCB design layout

TIDRM27.PDF (487 KB)

Detailed schematic diagram for design layout and components

Products

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

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Software

Firmware

TIDCC91 — TIDA-00848 Firmware

Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00848 Reference Design for Segment LCD Control Using GPIO Pins to Increase System Flexibility
Download options

TIDCC91 TIDA-00848 Firmware

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Latest version
Version: 01.00.00.00
Release date: Jun 2, 2016
Hardware development
Reference design
TIDA-00848 Reference Design for Segment LCD Control Using GPIO Pins to Increase System Flexibility

Release Information

The design resource accessed as www.ti.com/lit/zip/tidcc91 or www.ti.com/lit/xx/tidcc91/tidcc91.zip has been migrated to a new user experience at www.ti.com/tool/download/TIDCC91. Please update any bookmarks accordingly.

Technical documentation

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* Design guide Segment LCD Control Using GPIO Pins To Increase System Flexibility Design Guide (Rev. A) Jun 16, 2016

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