Home
Design & development
Reference designs

TIDA-00848

Design files

TIDA-00848

Design files

Overview

Segment LCD displays are very popular in ultra-low power metering and submetering applications such as heat cost allocators, water, and heat meters and are typically controlled by a dedicated on-chip LCD controller module in the MCU. This design shows an alternative, TI patented, design that can be used with any TI MCU without such module. Using a resistor network and GPIO control software, the LCD drive functionality has been implemented on the sensor controller engine inside the CC1312R wireless MCU to achieve a power consumption of 7.3μA (no LCD attached). To achieve the lowest power consumption in heat cost allocators compliant with the EN 834 norm, the LCD can be activated by the user through a capacitive touch or a push button event.

Features
  • CC1312 SimpleLink™ wireless MCU controls segment LCD through GPIOs (TI patented design for TI MCUs)
  • Only four COM, two control, and 21 segment lines (27 I/Os total) needed to drive 84 LCD segments (4-MUX, 1/3-Biasing)
  • Sensor controller peripheral reads out two TMP63 sensors periodically and checks for CapTouch events and implements an IrDA communication port
  • Two-layer PCB with HCA form factor using a 96-Segment LCD (4-MUX) and cap touch area for LCD on/off
  • Average current: 835nA at 3.6V (LCD Off); 7.3μA for SCE only, 11.9µA at 3.3V (28 segments on with BTL002 4-MUX LCD)
Download View video with transcript Video

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.

download Design guide — TIDA-00848
PDF | HTML
TIDUBQ7B.PDF (1504 KB)

Reference design overview and verified performance test data

download Assembly drawing — TIDA-00848
TIDRM29.PDF (212 KB)

Detailed overview of design layout for component placement

download Bill of materials (BOM) — TIDA-00848
TIDRM28A.PDF (140 KB)

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

download CAD/CAE symbol — TIDA-00848
TIDRM31A.ZIP (1302 KB)

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

download Gerber file — TIDA-00848
TIDCC90.ZIP (688 KB)

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

download PCB layout — TIDA-00848
TIDRM32.PDF (939 KB)

PCB layer plot file used for generating PCB design layout

download PCB layout — TIDA-00848
TIDRM30.PDF (1341 KB)

PCB layer plot file used for generating PCB design layout

download Schematic — TIDA-00848
TIDRM27A.PDF (1006 KB)

Detailed schematic diagram for design layout and components

Products

Includes TI products in the design and potential alternatives.

Precision op amps (Vos<1mV)

TLV2333 — Dual, 350-kHz, low-noise, RRIO, CMOS operational amplifier for cost-sensitive systems

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

CC1312R — SimpleLink™ 32-bit Arm Cortex-M4F Sub-1 GHz wireless MCU with 352kB Flash

Data sheet: PDF | HTML
Thermistors

TMP63 — 1%, 100-kΩ linear thermistor in 0402, 0603/0805 packages

Data sheet: PDF | HTML

Start development

Software development

Application software & framework

TIDA-00848-APPSW — TIDA-00848-SOFTWARE

Software example including SCE code for TIDA-00848 Reference Design
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00848 — Single-chip heat cost allocator reference design with segment LCD control using GPIO pins

TIDA-00848-APPSW — TIDA-00848-SOFTWARE

close
Latest version
Version: 1.0
Release date: Sep 10, 2026
open-in-new

View all versions

download

TIDA-00848-APPSW-1p0.zip  — 2116 K

SHA-256 checksum
Hardware development
Reference design
TIDA-00848 — Single-chip heat cost allocator reference design with segment LCD control using GPIO pins

Release Information

TIDA-00848 Rev2 software for CC1312R, including SCE code for LCD display support.

Supports simplelink_cc13xx_cc26xx_sdk_8_32_00_07 and CCS Tool 20.5.1 (June 2026)
Firmware

TIDA-00848 Firmware (Rev. A)

TIDCC91A.ZIP (2044 KB) - Firmware
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00848 — Single-chip heat cost allocator reference design with segment LCD control using GPIO pins

TIDA-00848 Firmware (Rev. A)

close
Latest version
Version: null
Release date: Jul 9, 2026
open-in-new

View all versions

Hardware development
Reference design
TIDA-00848 — Single-chip heat cost allocator reference design with segment LCD control using GPIO pins

Design tools & simulation

Simulation tool

TIDA-00848 TINA-TI Simulation

TIDMEA8.ZIP (233 KB) - Simulation tool
Supported products & hardware

Supported products & hardware

Hardware development
Reference design
TIDA-00848 — Single-chip heat cost allocator reference design with segment LCD control using GPIO pins

TIDA-00848 TINA-TI Simulation

close
Latest version
Version: null
Release date: Aug 19, 2026
open-in-new

View all versions

Hardware development
Reference design
TIDA-00848 — Single-chip heat cost allocator reference design with segment LCD control using GPIO pins

Technical documentation

star
= Top documentation selected by TI
No results found. Please clear your search and try again.
View all 1
Top documentation Type Title Format options Date
* Design guide Single-chip Heat Cost Allocator Reference Design with Segment LCD Control Using GPIO Pins (Rev. B) PDF | HTML Jul 10, 2026

Related design resources

Reference designs

REFERENCE DESIGN
TIDA-00646 — Matched Precision Temperature Sensing Reference Design for Heat Cost Allocators TIDA-00838 — Heat Cost Allocator with wM-Bus at 868 MHz Reference Design

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by 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, see TI support.

Videos
Disclaimer
See the important notice and disclaimer covering reference designs and other TI resources.