SPEAr320S:Embedded MPU with ARM926 core for industrial and consumer applications

The STM32F302xx/STM32F303xx family is based on the high-performance ARM® Cortex™-M4 32-bit RISC core operating at a frequency of up to 72 MHz, and embedding a floating point unit (FPU), a memory protection unit (MPU) and an embedded trace macrocell (ETM). The family incorporates high-speed embedded memories (up to 256 Kbytes of Flash memory, up to 48 Kbytes of SRAM), and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

The devices offer up to four fast 12-bit ADCs (5 Msps), up to seven comparators, up to four operational amplifiers, up to two DAC channels, a low-power RTC, up to five general-purpose 16-bit timers, one general-purpose 32-bit timer, and two timers dedicated to motor control. They also feature standard and advanced communication interfaces: up to two I2Cs, up to three SPIs (two SPIs are with multiplexed full-duplex I2Ss on STM32F303xx devices), three USARTs, up to two UARTs CAN and USB. To achieve audio class accuracy, the I2S peripherals can be clocked via an external PLL.

The STM32F302xx/STM32F303xx family operates in the -40 to +85 °C and -40 to +105 °C temperature ranges from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving mode allows the design of low-power applications.

The STM32F302xx/STM32F303xx family offers devices in three packages ranging from 48 pins to 100 pins.

The set of included peripherals changes with the device chosen.

Key Features

  • Core: ARM® 32-bit Cortex™-M4F CPU (72 MHz max), single-cycle multiplication and HW division, DSP instruction with FPU (floating-point unit) and MPU (memory protection unit).
  • Operating conditions:
    • VDD , VDDA voltage range: 2.0 V to 3.6 V
  • Memories
    • 128 to 256 Kbytes of Flash memory
    • Up to 40 Kbytes of SRAM on data bus with HW parity check
    • 8 Kbytes of SRAM on instruction bus with HW parity check (CCM)
  • CRC calculation unit
  • Reset and supply management
    • Power-on/Power down reset (POR/PDR)
    • Programmable voltage detector (PVD)
    • Low power modes: Sleep, Stop and Standby
    • VBAT supply for RTC and backup registers
  • Clock management
    • 4 to 32 MHz crystal oscillator
    • 32 kHz oscillator for RTC with calibration
    • Internal 8 MHz RC with x 16 PLL option
    • Internal 40 kHz oscillator
  • Up to 87 fast I/Os
    • All mappable on external interrupt vectors
    • Several 5 V-tolerant
  • 12-channel DMA controller
  • Up to four ADC 0.20 μS (up to 39 channels) with selectable resolution of 12/10/8/6 bits, 0 to 3.6 V conversion range, separate analog supply from 2 to 3.6 V
  • Up to two 12-bit DAC channels with analog supply from 2.4 to 3.6 V
  • Seven fast rail-to-rail analog comparators with analog supply from 2 to 3.6 V
  • Up to four operational amplifiers that can be used in PGA mode, all terminal accessible with analog supply from 2.4 to 3.6 V
  • Support for up to 24 capacitive sensing keys supporting touchkey, linear and rotary touchsensors
  • Up to 13 timers
    • One 32-bit timer and two 16-bit timers with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
    • Up to two 16-bit 6-channel advanced-control timers, with up to 6 PWM channels, deadtime generation and emergency stop
    • One 16-bit timer with 2 IC/OCs, 1 OCN/PWM, deadtime generation and emergency stop
    • Two 16-bit timers with IC/OC/OCN/PWM, deadtime generation and emergency stop
    • Two watchdog timers (independent, window)
    • SysTick timer: 24-bit downcounter
    • Up to two 16-bit basic timers to drive the DAC
  • Calendar RTC with Alarm, periodic wakeup from Stop/Standby
  • Communication interfaces
    • CAN interface (2.0B Active)
    • Two I2 C Fast mode plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus, wakeup from STOP
    • Up to five USART/UARTs (ISO 7816 interface, LIN, IrDA, modem control)
    • Up to three SPIs, two with multiplexed I2 S interface, 4 to 16 programmable bit frame
    • USB 2.0 full speed interface
    • Infrared Transmitter
  • Serial wire debug, JTAG, Cortex-M4F ETM
  • 96-bit unique ID
Product Specifications
DescriptionVersionSize
DS8759: Embedded MPU with ARM926 core for industrial and consumer applications2.11 MB
Application Notes
DescriptionVersionSize
AN3100: Configuring the SPEAr3xx multi-port memory controller (MPMC) for external DDR SDRAM2.1302 KB
AN3140: How to configure the SPEAr3xx general purpose timers (GPTs)1.2266 KB
AN3099: IBIS models for signal integrity simulation of SPEAr3xx applications1.3220 KB
AN2674: PCB layout guidelines for SPEAr3xx2.3543 KB
AN3129: Real-time performance using FIQ interrupt handling in SPEAr MPUs1.3188 KB
AN3123: Using the UART interfaces in the SPEAr embedded MPU family2.1218 KB
AN2641: Using the color LCD controller (CLCD) in the SPEAr embedded MPU family1.4419 KB
User Manuals
DescriptionVersionSize
UM1015: EVALSPEAr320CPU SPEAr320 CPU evaluation board1.01 MB
UM1535: Getting started with SPEAr® Linux support package (LSP 3.2.5)2.1486 KB
Reference Manuals
DescriptionVersionSize
RM0082: SPEAr3001.25 MB
RM0321: SPEAr320S address map and registers3.13 MB
RM0319: SPEAr320S architecture and functionality4.03 MB
Release Notes
DescriptionVersionSize
RN0081: Linux support package (LSP) v3.2.3 for SPEAr eMPU family2.1217 KB
RN0082: Linux support package (LSP) v3.2.5 for SPEAr eMPU family1.1237 KB
Presentations
DescriptionVersionSize
DLMS/COSEM solution for power-line communication1.11 MB
Board Manufacturing Specifications
DescriptionVersionSize
PCB trace length worksheet for SPEAr3xx evaluation boards2.120 KB
Flyers
DescriptionVersionSize
SPEAr320S embedded microprocessor1.0291 KB
Brochures
DescriptionVersionSize
SPEAr family of embedded microprocessors2.2732 KB
Software Development Tools
Part NumberManufacturerDescription
STSW-SPEAR009STUSB flasher for SPEAR
STSW-SPEAR012STRoot Filesystem Flash Image for NAND (large page)
Sample & Buy
Part NumberPackagePacking TypeOperating Temperature (°C) (min)Operating Temperature (°C) (max)Unit Price (US$) *QuantityECCN (EU)ECCN (US)Country of Origin
SPEAR320S-2LFBGA 289Tray-4085--5A002A1A5A002A1ASINGAPORE
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
SPEAR320S-2LFBGA 289IndustrialEcopack2
Embedded MPU with ARM926 core for industrial and consumer applications SPEAR320S
Configuring the SPEAr3xx multi-port memory controller (MPMC) for external DDR SDRAM SPEAR320
How to configure the SPEAr3xx general purpose timers (GPTs) SPEAR320
IBIS models for signal integrity simulation of SPEAr3xx applications SPEAR320
PCB layout guidelines for SPEAr3xx SPEAR320
Real-time performance using FIQ interrupt handling in SPEAr MPUs SPEAR320
Using the UART interfaces in the SPEAr embedded MPU family SPEAR320
Using the color LCD controller (CLCD) in the SPEAr embedded MPU family SPEAR320
EVALSPEAr320CPU SPEAr320 CPU evaluation board SPEAR1340
Getting started with SPEAr® Linux support package (LSP 3.2.5) SPEAR1340
SPEAr300 SPEAR1340
SPEAr320S address map and registers SPEAR320S
SPEAr320S architecture and functionality SPEAR320S
Linux support package (LSP) v3.2.3 for SPEAr eMPU family SPEAR1340
Linux support package (LSP) v3.2.5 for SPEAr eMPU family SPEAR1340
Demonstration kit for the ST7570 power line modem with graphical user interface EVALKITST7570-1
SPEAr320 embedded MPU known limitations SPEAR320
Linux support package (LSP) v3.2.5 for SPEAr eMPU family SPEAR320S
Linux support package (LSP) v3.2.5 for SPEAr eMPU family SPEAR1340