Entry-level ARM Cortex-M0 Access line MCU with 64 Kbytes Flash, 48 MHz CPU, motor control and CEC functions

The STM32F051xx microcontrollers incorporate the high-performance ARM®Cortex®-M0 32-bit RISC core operating at up to 48 MHz frequency, high-speed embedded memories (up to 64 Kbytes of Flash memory and 8 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (up to two I2Cs, up to two SPIs, one I2S, one HDMI CEC and up to two USARTs), one 12-bit ADC, one 12-bit DAC, six 16-bit timers, one 32-bit timer and an advanced-control PWM timer.

The STM32F051xx microcontrollers operate 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 STM32F051xx microcontrollers include devices in seven different packages ranging from 32 pins to 64 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included.

These features make the STM32F051xx microcontrollers suitable for a wide range of applications such as application control and user interfaces, hand-held equipment, A/V receivers and digital TV, PC peripherals, gaming and GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms and HVACs.

Key Features

  • Core: ARM® 32-bit Cortex® -M0 CPU, frequency up to 48 MHz
  • Memories
    • 16 to 64 Kbytes of Flash memory
    • 8 Kbytes of SRAM with HW parity checking
  • CRC calculation unit
  • Reset and power management
    • Digital and I/O supply: VDD = 2.0 V to 3.6 V
    • Analog supply: VDDA = from VDD 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 with x6 PLL option
    • Internal 40 kHz RC oscillator
  • Up to 55 fast I/Os
    • All mappable on external interrupt vectors
    • Up to 36 I/Os with 5 V tolerant capability
  • 5-channel DMA controller
  • One 12-bit, 1.0 μs ADC (up to 16 channels)
    • Conversion range: 0 to 3.6 V
    • Separate analog supply from 2.4 up to 3.6
  • One 12-bit DAC channel
  • Two fast low-power analog comparators with programmable input and output
  • Up to 18 capacitive sensing channels supporting touchkey, linear and rotary touch sensors
  • Up to 11 timers
    • One 16-bit 7-channel advanced-control timer for 6 channels PWM output, with deadtime generation and emergency stop
    • One 32-bit and one 16-bit timer, with up to 4 IC/OC, usable for IR control decoding
    • One 16-bit timer, with 2 IC/OC, 1 OCN, deadtime generation and emergency stop
    • Two 16-bit timers, each with IC/OC and OCN, deadtime generation, emergency stop and modulator gate for IR control
    • One 16-bit timer with 1 IC/OC
    • Independent and system watchdog timers
    • SysTick timer: 24-bit downcounter
    • One 16-bit basic timer to drive the DAC
  • Calendar RTC with alarm and periodic wakeup from Stop/Standby
  • Communication interfaces
    • Up to two I2 C interfaces, one supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus and wakeup from Stop mode
    • Up to two USARTs supporting master synchronous SPI and modem control, one with ISO7816 interface, LIN, IrDA capability, auto baud rate detection and wakeup feature
    • Up to two SPIs (18 Mbit/s) with 4 to 16 programmable bit frame, one with I2 S interface multiplexed
  • HDMI CEC interface, wakeup on header reception
  • Serial wire debug (SWD)
  • 96-bit unique ID
  • All packages ECOPACK® 2

Circuit Diagram

bd_stm32f051x8_64k.jpg

Design

Technical Documentation

Product Specifications
Description Version Size
DS8668 DS8668: ARM®-based 32-bit MCU, 16 to 64 KB Flash, 11 timers, ADC, DAC and communication interfaces, 2.0-3.6 V 6.0 2 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
AN4067 AN4067: Calibrating STM32F0x1, STM32F0x2 and STM32F0x8 lines internal RC oscillators 2.0 511 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
AN4080 AN4080: Getting started with STM32F0x1/x2/x8 hardware development 4.0 568 KB
AN4312 AN4312: Guidelines for designing touch sensing applications with surface sensors 1.1 972 KB
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
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 STM32Fx Series and STM32L1 Series devices 2.1 845 KB
AN4229 AN4229: How to implement a vocoder solution using STM32 microcontrollers 1.0 466 KB
AN4221 AN4221: I2C protocol used in the STM32 bootloader 3.0 683 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
AN3070 AN3070: Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32™’s USART 1.3 191 KB
AN4617 AN4617: Migrating between STM32F0 and STM32L0 microcontrollers 1.0 461 KB
AN4088 AN4088: Migrating between STM32F1 and STM32F0 series microcontrollers 3.0 1 MB
AN3364 AN3364: Migration and compatibility guidelines for STM32 microcontroller applications 3.1 127 KB
AN2867 AN2867: Oscillator design guide for STM8S, STM8A and STM32 microcontrollers 10.0 2 MB
AN4013 AN4013: STM32 cross-series timer overview 6.0 555 KB
AN2606 AN2606: STM32 microcontroller system memory boot mode 27.0 3 MB
AN4735 AN4735: STM32Cube firmware examples for the STM32F0 Series 4.0 438 KB
AN4062 AN4062: STM32F0DISCOVERY peripheral firmware examples 3.1 511 KB
AN2945 AN2945: STM8S and STM32™ MCUs: a consistent 8/32-bit product line for painless migration 1.3 212 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
AN4076 AN4076: Two or three shunt resistor based current sensing circuit design in 3-phase inverters 1.6 1 MB
AN3155 AN3155: USART protocol used in the STM32 bootloader 6.1 1 MB
AN3156 AN3156: USB DFU protocol used in the STM32 bootloader 4.0 394 KB
AN4277 AN4277: Using STM32 device PWM shut-down features for motor control and digital power conversion 4.0 834 KB
AN4112 AN4112: Using STM32F05xx analog comparators in application cases 1.1 238 KB
AN4104 AN4104: Using the STM32F0xx DMA controller 1.0 90 KB
AN3371 AN3371: Using the hardware real-time clock (RTC) in STM32 F0, F2, F3, F4 and L1 series of MCUs 5.1 421 KB
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 3.0 1 MB
TN0830 TN0830: How to use EWARM 6.2x with projects built with EWARM 6.1 and previous versions 1.2 97 KB
TN0516 TN0516: Overview of the STM32F0x/F100xx/F103xx and STM32F2xx/F30x/F4xx MCUs PMSM single/dual FOC SDK V4.0 4.0 285 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
RM0091 RM0091: STM32F0x1/STM32F0x2/STM32F0x8 advanced ARM®-based 32-bit MCUs 8.0 13 MB
Programming Manuals
Description Version Size
PM0215 PM0215: STM32F0xxx Cortex-M0 programming manual 1.1 822 KB
Errata Sheets
Description Version Size
ES0202 ES0202: STM32F051xx device limitations 3.0 198 KB
Device Option Lists
Description Version Size
STM32F051 64 Kbytes - option list 1.0 1 KB

HW Model & CAD Libraries

HW Model & CAD Libraries
Description Version Size
STM32F0 IBIS models 1.0 8 MB

Presentations & Training Material

Presentations
Description Version Size
Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: FAQ 1.0 290 KB
Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: Webinar Presentation 1.0 4 MB
Getting started with STM32F0 or STM32L0 series 1.0.0 606 KB
STM32 - 32-bit ARM Cortex-M MCUs 3.0 1 MB
STM32 Embedded Software overview 2.3.0 777 KB
STM32 and STM8 Functional Safety Packages 2.0 1 MB
STM32 and STM8 embedded software solutions 2.0 2 MB
STM32ファミリ開発環境のご紹介 1.0 2 MB

Publications and Collaterals

Flyers
Description Version Size
STM32 Nucleo boards 16.07 1 MB
STM32 for makers Releasing your creativity 15.10 1 MB
Brochures
Description Version Size
STM32 32-bit MCU family - Leading supplier of ARM® Cortex®-M microcontrollers 16.02 1 MB
STM32F0 Series - Mainstream 32-bit MCUs 15.08 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

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
STM32F051R8T6 LQFP 64 10x10x1.4 Tray -40 105 Active 1.324 10000 NEC 3A991A2 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
STM32F051R8T6TR LQFP 64 10x10x1.4 Tape And Reel -40 105 Active 1.324 10000 NEC 3A991A2 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
STM32F051R8T7 LQFP 64 10x10x1.4 Tray -40 105 Active 1.417 10000 NEC 3A991A2 CHINA MORE INFO DISTRIBUTOR AVAILABILITY
STM32F051R8H7 UFBGA 5X5X0.6 64L P 0.5 MM Tray -40 105 Active 1.278 10000 NEC 3A991A2 PHILIPPINES 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**
STM32F051R8T6 ActiveLQFP 64 10x10x1.4IndustrialEcopack2 0 0
STM32F051R8T6TR ActiveLQFP 64 10x10x1.4IndustrialEcopack2 0 0
STM32F051R8T7 ActiveLQFP 64 10x10x1.4IndustrialEcopack2 0 0
STM32F051R8H7 ActiveUFBGA 5X5X0.6 64L P 0.5 MMIndustrialEcopack2
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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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