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Analog and DSP with FPU ARM Cortex-M4 MCU with 256 Kbytes Flash, 72 MHz CPU, MPU, CCM, 12-bit ADC 5 MSPS, PGA, comparators
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The STM32F303xB/STM32F303xC family is based on the high-performance ARM®Cortex®-M4 32-bit RISC core with FPU 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 40 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), seven comparators, 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), 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 STM32F303xB/STM32F303xC 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 STM32F303xB/STM32F303xC family offers devices in three packages ranging from 48 pins to 100 pins.

The set of included peripherals changes with the device chosen.

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Key Features

  • Core: ARM®Cortex®-M4 32-bit CPU with FPU (72 MHz max), single-cycle multiplication and HW division, 90 DMIPS (from CCM), DSP instruction and MPU (memory protection unit)
  • Operating conditions:
  • VDD, VDDAvoltage range: 2.0 V to 3.6 V
  • Memories
  • 128 to 256 Kbytes of Flash memory
  • Up to 40 Kbytes of SRAM, with HW parity check implemented on the first 16 Kbytes.
  • Routine booster: 8 Kbytes of SRAM on instruction and data 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
  • VBATsupply 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
  • Interconnect matrix
  • 12-channel DMA controller
  • Four ADCs 0.20 μS (up to 39 channels) with selectable resolution of 12/10/8/6 bits, 0 to 3.6 V conversion range, single ended/differential input, separate analog supply from 2 to 3.6 V
  • 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
  • Four operational amplifiers that can be used in PGA mode, all terminals accessible with analog supply from 2.4 to 3.6 V
  • Up to 24 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
  • 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
  • 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
  • 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 I2C 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 half/full duplex I2S interface, 4 to 16 programmable bit frames
  • USB 2.0 full speed interface
  • Infrared transmitter
  • Serial wire debug, Cortex®-M4 with FPU ETM, JTAG
  • 96-bit unique ID

Circuit Diagram

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS9118: ARM®-based Cortex®-M4 32b MCU+FPU, up to 256KB Flash+ 48KB SRAM, 4 ADCs, 2 DAC ch., 7 comp, 4 PGA, timers, 2.0-3.6 V
11.0 2,260 KB

Application Notes

Description Version Size
AN1709: EMC design guide for ST microcontrollers
1.7 657 KB
AN2606: STM32 microcontroller system memory boot mode
24.0 2,832 KB
AN2834: How to get the best ADC accuracy in STM32Fx Series and STM32L1 Series devices
2.0 846 KB
AN2867: Oscillator design guide for STM8S, STM8A and STM32 microcontrollers
10.0 2,877 KB
AN3126: Audio and waveform generation using the DAC in STM32 microcontrollers
2.0 830 KB
AN3155: USART protocol used in the STM32 bootloader
6.0 1,157 KB
AN3156: USB DFU protocol used in the STM32 bootloader
4.0 395 KB
AN3236: Guidelines to increase the number of touch sensing touchkeys
4.0 300 KB
AN3307: Guidelines for obtaining IEC 60335 Class B certification for any STM32 application
4.0 431 KB
AN3371: Using the hardware real-time clock (RTC) in STM32 F0, F2, F3, F4 and L1 series of MCUs
5.0 422 KB
AN4013: STM32F0, STM32F1, STM32F2, STM32F4, STM32L1 series, STM32F30x, STM32F3x8, STM32F373 timer overview
4.0 514 KB
AN4045: STM32F3 series in-application programming (IAP) using the USART
2.0 386 KB
AN4076: Two or three shunt resistor based current sensing circuit design in 3-phase inverters
1.6 1,198 KB
AN4099: Implementing transmitters and receivers for infrared remote control protocols using STM32F0xx and STM32F3xx microcontrollers
2.0 521 KB
AN4157: STM32F3DISCOVERY peripheral firmware examples
1.0 240 KB
AN4195: STM32F30x ADC modes and application
1.0 725 KB
AN4206: Getting started with STM32F3 series hardware development
4.0 764 KB
AN4221: I2C protocol used in the STM32 bootloader
3.0 683 KB
AN4228: Migrating from STM32F1 to STM32F3 microcontrollers
5.0 836 KB
AN4229: How to implement a vocoder solution using STM32 microcontrollers
1.0 467 KB
AN4232: Getting started with analog comparators for STM32F3 series
2.0 452 KB
AN4277: Using STM32F3 Series PWM shut-down features for motor control and digital power conversion
3.0 709 KB
AN4296: Overview and tips for using STM32F303/328/334/358xx CCM RAM with IAR EWARM, Keil MDK-ARM and GNU-based toolchains
3.0 1,162 KB
AN4299: Guidelines to improve conducted noise robustness on STM32F0, STM32F3 and STM32L0 series touch sensing applications
2.0 672 KB
AN4310: Sampling capacitor selection guide for MCU based touch sensing applications
2.0 175 KB
AN4312: Guidelines for designing touch sensing applications with surface sensors
1.0 973 KB
AN4316: Tuning a STMTouch-based application
3.0 784 KB
AN4538: Power consumption optimization with STM32F3xx microcontrollers
1.0 808 KB
AN4566: Extending the DAC performance of STM32 microcontrollers
2.0 365 KB
AN4651: STM32F3 series peripheral interconnect matrix
1.0 380 KB
AN4655: Virtually increasing the number of serial communication peripherals in STM32 applications
1.1 339 KB
AN4734: STM32Cube firmware examples for STM32F3 Series
3.0 337 KB
AN4750: Handling of soft errors in STM32 applications
2.1 411 KB

Technical Notes & Articles

Description Version Size
TN0516: Overview of the STM32F0x/F100xx/F103xx and STM32F2xx/F30x/F4xx MCUs PMSM single/dual FOC SDK V4.0
4.0 286 KB
TN0830: How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions
1.1 97 KB
TN1204: Tape and reel shipping media for STM32 microcontrollers in BGA packages
2.1 746 KB
TN1205: Tape and reel shipping media for STM8 and STM32 microcontrollers in FPN packages
3.0 753 KB
TN1206: Tape and reel shipping media for STM8 and STM32 microcontrollers in QFP packages
3.0 831 KB
TN1207: Tape and reel shipping media for STM8 and STM32 microcontrollers in SO packages
1.0 755 KB
TN1208: Tape and reel shipping media for STM8 and STM32 microcontrollers in TSSOP and SSOP packages
1.0 743 KB

Reference Manual

Description Version Size
RM0316: STM32F303xB/C/D/E, STM32F303x6/8, STM32F328x8, STM32F358xC, STM32F398xE advanced ARM®-based MCUs
6.0 12,880 KB

Programming Manual

Description Version Size
PM0214: STM32F3 and STM32F4 Series Cortex®-M4 programming manual
4.0 2,604 KB

Errata Sheet

Description Version Size
ES0204: STM32F303xB/C Rev Z and Y device limitations
7.0 418 KB

HW Model & CAD Libraries

HW Model & CAD Libraries

Description Version Size
STM32F3 Boundary Scan Description Language (BSDL) files
1.0 132 KB

Presentations & Training Material


Description Version Size
STM32 Embedded Software overview
2.1.0 736 KB
STM32 PMSM FOC SDK 4.2 Hands-on workshop with hardware tools
1.5 5,796 KB
STM32 and STM8 embedded software solutions
2.0 2,415 KB

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Description Version Size
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Description Version Size
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15.02 1,997 KB

Quality & Reliability

Product Certification

Description Version Size
STM32 CAN conformance test authentication sheet
183 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeOperating Temperature (min) Operating Temperature (max) Order From STUnit Price (US$)*
@ 10000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STM32F303VCT6ActiveLQFP 100 14x14x1.4Tray-4085-3.415Distributor reported inventory date: 2015-11-27
Distributor NameRegionStockMin. order
Farnell Element14Order NowEUROPE651
STM32F303VCT6TRActiveLQFP 100 14x14x1.4Tape And Reel-4085-3.415Distributor reported inventory date: 2015-11-27
Distributor NameRegionStockMin. order
ANGLIA LiveOrder NowEUROPE90001000
STM32F303VCT7ActiveLQFP 100 14x14x1.4Tray-40105-3.654Distributor reported inventory date: 2015-11-27
Distributor NameRegionStockMin. order
Newark Element14Order NowAMERICA20
Farnell Element14Order NowEUROPE821
STM32F303VCY6TREvaluationWLCSP 100L P 0.4 MM DIE 422Tape And Reel-4085-3.415No availability reported, please contact our Sales officeEcopack2-

(*) 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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