Mainstream Mixed signals MCUs ARM Cortex-M4 core with DSP and FPU, 64 Kbytes Flash, 72 MHz CPU, CCM, 12-bit ADC 5 MSPS, comparators, op-amp, hr timer

The STM32F334x4/6/8 family incorporates the high-performance ARM® Cortex®-M4 32-bit RISC core operating at up to 72 MHz frequency embedding a floating point unit (FPU), high-speed embedded memories (up to 64 Kbytes of Flash memory, up to 12 Kbytes of SRAM), and an extensive range of enhanced I/Os and peripherals connected to two APB buses.

The STM32F334x4/6/8 microcontrollers offer two fast 12-bit ADCs (5 Msps), up to three ultra-fast comparators, an operational amplifier, three DAC channels, a low-power RTC, one high-resolution timer, one general-purpose, 32-bit timer, one timer dedicated to motor control, and four general-purpose, 16-bit timers. They also feature standard and advanced communication interfaces: one I2C, one SPI, up to three USARTs and one CAN.

The STM32F334x4/6/8 family operates in the –40 to +85 °C and –40 to +105 °C temperature ranges from 2.0 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.

The STM32F334x4/6/8 family offers devices in 32, 48 and 64-pin packages.

Depending on the device chosen, different sets of peripherals are included.

Key Features

  • Core: ARM® Cortex® -M4 32-bit CPU with FPU (72 MHz max), single-cycle multiplication and HW division, DSP instruction
  • Memories
    • Up to 64 Kbytes of Flash memory
    • Up to 12 Kbytes of SRAM with HW parity check
    • Routine booster: 4 Kbytes of SRAM on instruction and data bus with HW parity check (CCM)
  • CRC calculation unit
  • Reset and supply management
    • VDD, VDDA voltage range: 2.0 to 3.6 V
    • Power-on/Power-down reset (POR/PDR)
    • Programmable voltage detector (PVD)
    • Low-power modes: Sleep, Stop, 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 (up to 64 MHz with PLL option)
    • Internal 40 kHz oscillator
  • Up to 51 fast I/O ports, all mappable on external interrupt vectors, several 5 V-tolerant
  • Interconnect Matrix
  • 7-channel DMA controller
  • Up to two ADC 0.20 µs (up to 21 channels) with selectable resolution of 12/10/8/6 bits, 0 to 3.6 V conversion range, single-ended/differential mode, separate analog supply from 2.0 to 3.6 V
  • Temperature sensor
  • Up to three 12-bit DAC channels with analog supply from 2.4 V to 3.6 V
  • Three ultra-fast rail-to-rail analog comparators with analog supply from 2 to 3.6 V
  • One operational amplifiers that can be used in PGA mode, all terminals accessible with analog supply from 2.4 to 3.6 V
  • Up to 18 capacitive sensing channels supporting touchkeys, linear and rotary touch sensors
  • Up to 12 timers
    • HRTIM: 6 x16-bit counters, 217 ps resolution, 10 PWM, 5 fault inputs, 10 ext event input, 1 synchro. input,1 synchro. out
    • One 32-bit timer and one 16-bit timer with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
    • One 16-bit 6-channel advanced-control timer, with up to 6 PWM channels, deadtime generation and emergency stop
    • One 16-bit timer with 2 IC/OCs, 1 OCN/PWM, deadtime generation, 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 DAC
  • Calendar RTC with alarm, periodic wakeup from Stop
  • Communication interfaces
    • CAN interface (2.0 B Active) and one SPI
    • One I2 C with 20 mA current sink to support Fast mode plus, SMBus/PMBus
    • Up to 3 USARTs, one with ISO/IEC 7816 interface, LIN, IrDA, modem control
  • Debug mode: serial wire debug (SWD), JTAG
  • 96-bit unique ID
  • All packages ECOPACK® 2


0 下载



Description Version Size
DS9994 DS9994: ARM®Cortex®-M4 32b MCU+FPU,up to 64KB Flash,16KB SRAM, 2 ADCs,3 DACs,3 comp.,op-amp, 217ps 10-ch (HRTIM1) 6.0 1 MB
Description Version Size
AN3126 AN3126: 使用 STM32 微控制器系列中的 DAC生成音频和波形 3.0 999 KB
AN4775 AN4775: Basics and low-cost solution proposals to move from legacy USB2.0 connector to USB Type-C™ connector with STM32 devices 1.0 443 KB
AN1709 AN1709: EMC design guide for ST microcontrollers 2.0 843 KB
AN3960 AN3960: ESD considerations for touch sensing applications on MCUs 2.0 353 KB
AN1181 AN1181: Electrostatic discharge sensitivity measurement 1.6 49 KB
AN4566 AN4566: Extending the DAC performance of STM32 microcontrollers 2.0 365 KB
AN4776 AN4776: General-purpose timer cookbook 2.0 1 MB
AN4206 AN4206: STM32F3xx 硬件开发入门 4.0 735 KB
AN4232 AN4232: Getting started with analog comparators for STM32F3 Series devices 3.0 393 KB
AN4312 AN4312: Guidelines for designing touch sensing applications with surface sensors 3.0 1 MB
AN4299 AN4299: Guidelines to improve conducted noise robustness on STM32F0/F3, STM32L0/L4 series touch sensing applications 3.0 613 KB
AN3236 AN3236: Guidelines to increase the number of touch sensing touchkeys 4.0 300 KB
AN4539 AN4539: HRTIM 指南 1.1 911 KB
AN4750 AN4750: Handling of soft errors in STM32 applications 2.1 410 KB
AN4803 AN4803: High-speed SI simulations using IBIS and board-level simulations using HyperLynx SI on STM32 32-bit ARM® Cortex® MCUs 1.1 2 MB
AN2834 AN2834: How to get the best ADC accuracy in STM32 microcontrollers 3.1 1 MB
AN4229 AN4229: How to implement a vocoder solution using STM32 microcontrollers 1.1 466 KB
AN4991 AN4991: 如何使用USART或LPUART将STM32F0/F3/L0/L4微控制器从低功耗模式唤醒 1.0 378 KB
AN4221 AN4221: STM32 自举程序中使用的 I2C 协议 5.0 718 KB
AN4099 AN4099: 使用 STM32F0xx 和 STM32F3xx 微控制器为红外遥控协议实现发送器和接收器 3.0 889 KB
AN4838 AN4838: Managing memory protection unit (MPU) in STM32 MCUs 1.0 284 KB
AN4228 AN4228: Migrating from STM32F1 Series to STM32F3 Series microcontrollers 6.0 938 KB
AN2867 AN2867: Oscillator design guide for STM8AF/AL/S and STM32 microcontrollers 11.0 2 MB
AN4296 AN4296: 以IAR EWARM、Keil MDK-ARM 和基于GNU 的工具链来使用STM32F303/358xx CCM RAM 的概述与技巧 3.0 812 KB
AN4538 AN4538: 使用 STM32F3xx 微控制器优化功耗 1.0 883 KB
AN4908 AN4908: STM32 USART automatic baud rate detection 1.0 268 KB
AN4013 AN4013: STM32F1xx、STM32F2xx、STM32F4xx、STM32L1xx、STM32F30/31/37/38x 定时器概览 6.0 595 KB
AN4989 AN4989: STM32 microcontroller debug toolbox 2.0 5 MB
AN2606 AN2606: STM32™ 微控制器系统存储器自举模式 31.0 2 MB
AN4734 AN4734: STM32Cube firmware examples for STM32F3 Series 7.0 523 KB
AN4045 AN4045: STM32F3 series in-application programming (IAP) using the USART 2.0 386 KB
AN4651 AN4651: STM32F3 series peripheral interconnect matrix 1.0 379 KB
AN4310 AN4310: Sampling capacitor selection guide for MCU based touch sensing applications 3.0 208 KB
AN4316 AN4316: Tuning a STMTouch-based application 3.0 783 KB
AN3155 AN3155: STM32™ 自举程序中使用的 USART 协议 7.0 1 MB
AN4277 AN4277: 使用STM32F30x/31x PWM 刹车特性进行电机控制和数字电源转换功率因数校正 4.0 609 KB
AN4759 AN4759: Using the hardware real-time clock (RTC) in low-power modes with STM32 microcontrollers 3.0 1 MB
AN4655 AN4655: 在 STM32 应用中虚拟增加串行通信外设数目 1.1 442 KB
Technical Notes & Articles
Description Version Size
TN1163 TN1163: Description of WLCSP for microcontrollers and recommendations for its use 4.0 1 MB
TN0830 TN0830: How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions 1.2 97 KB
TN1204 TN1204: Tape and reel shipping media for STM32 microcontrollers in BGA packages 2.1 745 KB
TN1205 TN1205: Tape and reel shipping media for STM8 and STM32 microcontrollers in FPN packages 3.0 753 KB
TN1206 TN1206: Tape and reel shipping media for STM8 and STM32 microcontrollers in QFP packages 3.0 830 KB
TN1207 TN1207: Tape and reel shipping media for STM8 and STM32 microcontrollers in SO packages 1.0 755 KB
TN1208 TN1208: Tape and reel shipping media for STM8 and STM32 microcontrollers in TSSOP and SSOP packages 1.0 743 KB
Description Version Size
RM0364 RM0364: STM32F334xx advanced Arm®-based 32-bit MCUs 3.0 12 MB
Description Version Size
PM0214 PM0214: STM32F3 Series, STM32F4 Series, STM32L4 Series and STM32L4+ Series Cortex®-M4 programming manual 6.0 3 MB
Description Version Size
ES0258 ES0258: STM32F334x4/x6/x8 Rev Z device limitations 5.0 523 KB

HW Model, CAD Libraries & SVD

HW Model, CAD Libraries & SVD
Description Version Size
STM32F3 Boundary Scan Description Language (BSDL) files 1.0 132 KB
STM32F3 CAD Symbol and Footprint files 1.0 1 MB
STM32F3 System View Description 1.2 433 KB


Description Version Size
STM32 and STM8 Functional Safety Packages 2 1 MB


Description Version Size
Get ready for the largest IoT development ecosystem 17.02 741 KB
STM32 GUI solutions - Avanced HMI now achievable on embedded systems 17.02 1 MB
STM32 Nucleo boards - Unified scalable offering 17.11 1 MB
STM32 for makers - Releasing your creativity 17.06 2 MB
Description Version Size
STM32 32-bit MCU family - Leading supplier of ARM® Cortex®-M microcontrollers 17.10 2 MB
STM32F3 series - Mainstream 32-bit MCUs 17.09 2 MB


Product Certifications
Description Version Size
STM32 CAN conformance test authentication sheet 1.0 182 KB


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