Embedded MPU optimized for factory automation and consumer applications

The SPEAr320 is a member of the SPEAr family of embedded MPUs, optimized for industrial automation and consumer applications. It is based on the powerful ARM926EJ-S processor (up to 333 MHz), widely used in applications where high computation performance is required.

In addition, SPEAr320 has an MMU that allows virtual memory management - making the system compliant with Linux operating system. It also offers 16 KB of data cache, 16 KB of instruction cache, JTAG and ETM (Embedded Trace Macrocell) for debug operations.

A full set of peripherals allows the system to be used in many applications, some typical applications being factory automation, printer and consumer applications.

Key Features

  • ARM926EJ-S 333 MHz core
  • High-performance 8-channel DMA
  • Dynamic power-saving features
  • Configurable peripheral functions on 102 shared I/Os.
  • Memory:
    • 32 KB ROM and 8 KB internal SRAM
    • LPDDR-333/DDR2-666 external memory interface
    • SDIO/MMC card interface
    • Serial Flash memory interface (SMI)
    • Flexible static memory controller (FSMC) up to 16-bit data bus width, supporting NAND Flash
    • External memory interface (EMI) up to 16-bit data bus width, supporting NOR Flash and FPGAs
  • セキュリティ
    • Cryptographic accelerator
  • Connectivity
    • 2 x USB 2.0 Host
    • 1 x USB 2.0 Device
    • 2 x Fast Ethernet ports (for external MII/SMII PHY)
    • 2 x CAN interface
    • 3 x SSP Synchronous serial port (SPI, Microwire or TI protocol)
    • 2 x I2 C
    • 1 x fast IrDA interface
    • 3 x UART interface
    • 1 x standard parallel device port
  • Peripherals supported
    • TFT/STN LCD controller (resolution up to 1024 x 768 and up to 24 bpp)
    • Touchscreen support
  • Miscellaneous functions
    • Integrated real time clock, watchdog, and system controller
    • 8-channel 10-bit ADC, 1 Msps
    • 4 x PWM timers
    • JPEG CODEC accelerator
    • 6x 16-bit general purpose timers with programmable prescaler, 4 capture inputs
    • Up to 102 GPIOs with interrupt capability



Description バージョン サイズ
DS6590 DS6590: Embedded MPU with ARM926 core, optimized for factory automation and consumer applications 5.1 903 KB
Description バージョン サイズ
AN3100 AN3100: Configuring the SPEAr3xx multi-port memory controller (MPMC) for external DDR SDRAM 2.1 302 KB
AN3140 AN3140: How to configure the SPEAr3xx general purpose timers (GPTs) 1.2 266 KB
AN3099 AN3099: IBIS models for signal integrity simulation of SPEAr3xx applications 1.3 220 KB
AN2674 AN2674: PCB layout guidelines for SPEAr3xx 2.3 543 KB
AN3129 AN3129: Real-time performance using FIQ interrupt handling in SPEAr MPUs 1.3 188 KB
AN3123 AN3123: Using the UART interfaces in the SPEAr embedded MPU family 2.1 218 KB
AN2641 AN2641: Using the color LCD controller (CLCD) in the SPEAr embedded MPU family 1.4 419 KB
Description バージョン サイズ
UM1015 UM1015: EVALSPEAr320CPU SPEAr320 CPU evaluation board 1.0 1 MB
UM1045 UM1045: EVALSPEAr320HMI SPEAr320 expansion board for HMI applications, revision 2 3.0 823 KB
UM0842 UM0842: EVALSPEAr320PLC evaluation board for the SPEAr320 4.1 804 KB
UM0844 UM0844: Getting started with SPEAr® Linux support package (LSP2.3) 3.0 694 KB
UM0851 UM0851: Linux support package (LSP) v2.3 for SPEAr 2.2 3 MB
Description バージョン サイズ
RM0082 RM0082: SPEAr300 1.3 5 MB
Description バージョン サイズ
RN0053 RN0053: Linux support package for SPEAr (LSP) v 2.3 1.1 78 KB
RN0080 RN0080: Linux support package for SPEAr (LSP) v 2.3.2 1.1 86 KB


Board Manufacturing Specifications
Description バージョン サイズ
PCB trace length worksheet for SPEAr3xx evaluation boards 2.1 20 KB

Publications and Collaterals

Description バージョン サイズ
SPEAr family of embedded microprocessors 2.2 732 KB

ツール & ソフトウェア

Software Development Tools
サポート & コミュニティ

サンプル & 購入

製品型番 パッケージ Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * 数量 ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
SPEAR320-2 LFBGA 289 15x15x1.7 Tray -40 85 NRND - - 5A002A4 5A002A4 - MORE INFO No availability reported, please contact our Sales office

(*) 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

品質 & 信頼性

製品型番 Marketing Status パッケージ Grade RoHS Compliance Grade Material Declaration**
SPEAR320-2 NRNDLFBGA 289 15x15x1.7IndustrialEcopack2 0 0

(**) The Material Declaration forms available on st.com 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.