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 a 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 V 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

Design

Technical Documentation

Product Specifications
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) 5.0 1 MB
Application Notes
Description Version Size
AN3126 AN3126: Audio and waveform generation using the DAC in STM32 microcontrollers 2.0 829 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 1.0 1 MB
AN4206 AN4206: Getting started with STM32F3 series hardware development 4.0 763 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 2.0 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 cookbook 1.0 560 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
AN4229 AN4229: How to implement a vocoder solution using STM32 microcontrollers 1.0 466 KB
AN4991 AN4991: How to wake up an STM32F0/F3/L0/L4 microcontroller from low-power mode with the USART or the LPUART 1.0 317 KB
AN4221 AN4221: I2C protocol used in the STM32 bootloader 5.0 682 KB
AN4099 AN4099: Implementation of transmitters and receivers for infrared remote control protocols with MCUs of the STM32F0 and STM32F3 Series 3.0 750 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 STM8S, STM8A and STM32 microcontrollers 10.0 2 MB
AN4296 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 MB
AN4538 AN4538: Power consumption optimization with STM32F3xx microcontrollers 1.0 807 KB
AN4908 AN4908: STM32 USART automatic baud rate detection 1.0 268 KB
AN4013 AN4013: STM32 cross-series timer overview 6.0 555 KB
AN2606 AN2606: STM32 microcontroller system memory boot mode 30.0 3 MB
AN4734 AN4734: STM32Cube firmware examples for STM32F3 Series 6.0 518 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: USART protocol used in the STM32 bootloader 7.0 617 KB
AN4277 AN4277: Using STM32 device PWM shut-down features for motor control and digital power conversion 4.0 834 KB
AN4759 AN4759: Using the hardware real-time clock (RTC) in low-power modes with STM32 microcontrollers 2.0 1 MB
AN4655 AN4655: Virtually increasing the number of serial communication peripherals in STM32 applications 1.1 338 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
Reference Manuals
Description Version Size
RM0364 RM0364: STM32F334xx advanced ARM®-based 32-bit MCUs 2.0 14 MB
Programming Manuals
Description Version Size
PM0214 PM0214: STM32F3, STM32F4 and STM32L4 Series Cortex®-M4 programming manual 5.0 3 MB
Errata Sheets
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 1.1 383 KB

Presentations & Training Material

Presentations
Description Version Size
STM32 Embedded Software overview 2.3.0 777 KB
STM32 and STM8 Functional Safety Packages 2 1 MB
STM32 and STM8 embedded software solutions 2.0 2 MB

Publications and Collaterals

Flyers
Description Version Size
Get ready for the largest IoT development ecosystem 17.02 741 KB
STM32 GUI solutions - Advanced HMI now achievable on embedded systems 1.0 1 MB
STM32 Nucleo boards 18.0 1 MB
STM32 for makers Releasing your creativity 16.09 1 MB
Brochures
Description Version Size
STM32™ 32-bit MCU family - Leading supplier of ARM® Cortex®-M microcontrollers 18.0 1 MB
STM32F3 series - Mainstream 32-bit MCUs 15.11 1 MB

Quality & Reliability

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

Tools and Software

Development Tools
Embedded Software
Evaluation Tools
Hardware Development Tools
Software Development Tools
MCUs Embedded Software
Product Evaluation Tools
Support & Community



Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
STM32F334R8T6 LQFP 64 10x10x1.4 Tray -40 85 Active 2.315 10000 NEC 3A991A2 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
STM32F334R8T7TR LQFP 64 10x10x1.4 Tape And Reel -40 105 Active 2.477 10000 NEC 3A991A2 CHINA MORE INFO
STM32F334R8T7 LQFP 64 10x10x1.4 Tray -40 105 Active 2.477 10000 NEC 3A991A2 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
STM32F334R8T6TR LQFP 64 10x10x1.4 Tape And Reel -40 85 Active 2.315 10000 NEC 3A991A2 CHINA MORE INFO
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(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM32F334R8T6 ActiveLQFP 64 10x10x1.4IndustrialEcopack2 0 0
STM32F334R8T7TR ActiveLQFP 64 10x10x1.4IndustrialEcopack2 0 0
STM32F334R8T7 ActiveLQFP 64 10x10x1.4IndustrialEcopack2 0 0
STM32F334R8T6TR ActiveLQFP 64 10x10x1.4IndustrialEcopack2 0 0
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(**) 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.

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