LED Display Driver with Serial Interface Reference Design


Design files


This reference design drives 8 seven-segment digits with brightness control using a low-cost MSP430 and two DRV8860 octal low-side drivers. The display module gains benefits from DRV8860 on wide-supply range, high-current capability, PWM brightness control, serial daisy-chain connection and expandable outputs for hundreds of LEDs. AThis reference design and six demo display patterns are provided with the on-board MCU program along with the integrated protection from short-circuit, under voltage, and over-temperature.

  • Serial interface minimizes the number of signals
  • Drives eight characters with only two DRV8860 devices
  • Small PCB footprint
  • Extendable output current capability for super bright LEDs
  • Internal eight-level PWM duty for brightness control via serial interface
  • Six demo display patterns provided with the on-board MCU
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Design files & products

Design files

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

TIDU423.PDF (365 K)

Test results for the reference design, including efficiency graphs, test prerequisites and more

TIDR830.PDF (116 K)

Detailed schematic diagram for design layout and components

TIDR831.PDF (108 K)

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

TIDR832.ZIP (265 K)

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

TIDC494.ZIP (59 K)

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


Includes TI products in the design and potential alternatives.

Stepper motor drivers

DRV886038-V, 0.3-A, octal low-side motor driver with serial control

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430G230216 MHz MCU with 4KB Flash, 256B SRAM, SPI/I2C, timer

Data sheet: PDF

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Evaluation board

DRV8860EVM — DRV8860EVM - Evaluation Module for Octal, Low-Side Driver with Serial Interface

The DRV8860 provides an 8-channel low side driver with comprehensive protection and diagnosis. It offers flexible output configuration options to support different levels of load current with a simple Serial interface, which supports daisy-chain connection for multiple devices. Built-in (...)

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Technical documentation

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Type Title Date
Test report TIDA-00206 Test Results Jun. 26, 2014

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