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SPEAr320 evaluation board for PLC applications
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This evaluation board can be used to evaluate the SPEAr320 microprocessor with a variety of devices and especially its media independent interface (MII) automation mode.

The EVALSPEAr320PLC evaluation board kit consists of two boards: a CPU board and a MII mode application board. The SPEAr320 microprocessor is mounted on the CPU board that is plugged on the MII mode application board.

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Data Brief

Key Features

  • CPU board
  • SPEAr320 embedded MPU
  • Up to 2 Gbits DDR2 333 MHz (std 128 Mbytes)
  • Up to 16 Mbytes serial Flash memory (std 8 Mbytes)
  • Two USB 2.0 full host port channels
  • One USB 2.0 host device port
  • One serial port (up to 115 baud)
  • JTAG debug ports
  • Application board
  • 2 x Ethernet RJ-45 connectors (ST802RT1A)
  • 2 x CAN DB9 plug connectors
  • 3 x RS-232 DB9 plug connectors (ST3232EBTR)
  • 1 x RS-485 DB9 socket connector (ST3485EBDR)
  • Digital input connectors (parallel and serial) compatible with STEVAL-IFP007V1, STEVAL-IFP008V1 and STEVAL-IFP004V1 evaluation boards
  • Digital output connectors (parallel and serial) compatible with STEVAL-IFP009V1, STEVAL-IFP001V1, STEVAL-IFP002V1 and STEVAL-IFP006V1 evaluation boards
  • On-board temperature sensor (STLM20W87F) and potentiometer (analog input for ADC)
  • Analog extension connector featuring 8 ADC lines
  • General-purpose extension connector with GPIOs and I2C functionality
  • DC/DC converter L7986A (+24 V / +5 V)
  • MicroSD card socket
  • 4 LEDs, 2 general-purpose buttons and system reset button


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1129: Evaluation board for SPEAr320 embedded MPU
1.1 190 KB

Technical Notes & Articles

Description Version Size
TN0559: Installing the SPEAr Linux Support Package (LSP 2.3.2)
1.1 64 KB

User Manual

Description Version Size
UM0842: EVALSPEAr320PLC evaluation board for the SPEAr320
4.1 804 KB
UM1535: Getting started with SPEArĀ® Linux support package (LSP 3.2.5)
2.0 486 KB

Presentations & Training Material


Description Version Size
Getting started with Linux OS for SPEAr eMPUs
2.4 107 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
EVALSPEAr320PLC Gerber files
1.1.0 834 KB
EVALSPEAr320PLC PCB dimensions and layouts
1.1.0 463 KB
PCB trace length worksheet for SPEAr3xx evaluation boards
1.1.0 20 KB

Bill of Materials

Description Version Size
1.1.0 35 KB

Schematic Pack

Description Version Size
EVALSPEAr320PLC schematics
1.2.0 3,018 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STSW-SPEAR007 STLinux for SPEAr Install Script and User Manual
STSW-SPEAR008 USB Flasher (Windows PC)

License Agreement

Description Version Size
Evaluation products license agreement
1.0 126 KB

Sample & Buy

Part Number Marketing StatusOrder From STUnit Price (US$)*
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
EVALSPEAR320PLCActive-No availability reported, please contact our Sales officeEcopack1-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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