Mainstream ARM Cortex-M0 USB line MCU with 32 Kbytes Flash, 48 MHz CPU, USB, CAN and CEC functions

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  • The STM32F042x4/x6 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 32 Kbytes of Flash memory and 6 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (one I2C, two SPIs/one I2S, one HDMI CEC and two USARTs), one USB Full-speed device (crystal-less), one CAN, one 12-bit ADC, four 16-bit timers, one 32-bit timer and an advanced-control PWM timer.

    The STM32F042x4/x6 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 STM32F042x4/x6 microcontrollers include devices in seven different packages ranging from 20 pins to 48 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included.
    These features make the STM32F042x4/x6 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 32 Kbytes of Flash memory
      • 6 Kbytes of SRAM with HW parity
    • CRC calculation unit
    • Reset and power management
      • Digital and I/Os supply: VDD= 2 V to 3.6 V
      • Analog supply: VDDA= from VDDto 3.6 V
      • Selected I/Os: VDDIO2= 1.65 V to 3.6 V
      • Power-on/Power down reset (POR/PDR)
      • Programmable voltage detector (PVD)
      • Low power modes: Sleep, Stop, 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 x6 PLL option
      • Internal 40 kHz RC oscillator
      • Internal 48 MHz oscillator with automatic trimming based on ext. synchronization
    • Up to 38 fast I/Os
      • All mappable on external interrupt vectors
      • Up to 24 I/Os with 5 V tolerant capability and 8 with independent supply VDDIO2
    • 5-channel DMA controller
    • One 12-bit, 1.0 μs ADC (up to 10 channels)
      • Conversion range: 0 to 3.6 V
      • Separate analog supply: 2.4 V to 3.6 V
    • Up to 14 capacitive sensing channels for touchkey, linear and rotary touch sensors
    • Calendar RTC with alarm and periodic wakeup from Stop/Standby
    • Nine timers
      • One 16-bit advanced-control timer for six channel PWM output
      • One 32-bit and four 16-bit timers, with up to four IC/OC, OCN, usable for IR control decoding
      • Independent and system watchdog timers
      • SysTick timer
    • Communication interfaces
      • One I2C interface supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, SMBus/PMBus and wakeup
      • Two USARTs supporting master synchronous SPI and modem control, one with ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup feature
      • Two SPIs (18 Mbit/s) with 4 to 16 programmable bit frames, one with I2S interface multiplexed
      • CAN interface
      • USB 2.0 full-speed interface, able to run from internal 48 MHz oscillator and with BCD and LPM support
    • HDMI CEC, wakeup on header reception
    • Serial wire debug (SWD)
    • 96-bit unique ID
    • All packages ECOPACK®2

Circuit Diagram

STM32F042x6 block diagram

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Package

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Operating Temperature (°C)

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Technical Documentation

    • Description Version Size Action
      DS10147
      ARM®-based 32-bit MCU, up to 32 KB Flash, crystal-less USB FS 2.0, CAN, 9 timers, ADC and comm. interfaces, 2.0 - 3.6 V
      5.0
      1.86 MB
      PDF
      DS10147

      ARM®-based 32-bit MCU, up to 32 KB Flash, crystal-less USB FS 2.0, CAN, 9 timers, ADC and comm. interfaces, 2.0 - 3.6 V

    • Description Version Size Action
      AN3126
      Audio and waveform generation using the DAC in STM32 microcontrollers
      3.0
      816.19 KB
      PDF
      AN4775
      Basics and low-cost solution proposals to move from legacy USB2.0 connector to USB Type-C™ connector with STM32 devices
      1.0
      443.47 KB
      PDF
      AN4067
      Calibrating STM32F0x1, STM32F0x2 and STM32F0x8 lines internal RC oscillators
      2.0
      511.77 KB
      PDF
      AN4312
      Design with surface sensors for touch sensing applications on MCUs
      5.0
      1.83 MB
      PDF
      AN1709
      EMC design guide for STM8, STM32 and Legacy MCUs
      3.1
      862.41 KB
      PDF
      AN3960
      ESD considerations for touch sensing applications on MCUs
      4.0
      312.5 KB
      PDF
      AN1181
      Electrostatic discharge sensitivity measurement
      1.6
      49.01 KB
      PDF
      AN4566
      Extending the DAC performance of STM32 microcontrollers
      2.0
      365.16 KB
      PDF
      AN4776
      General-purpose timer cookbook
      2.0
      1.95 MB
      PDF
      AN4080
      Getting started with STM32F0x1/x2/x8 hardware development
      4.0
      568.74 KB
      PDF
      AN5105
      Getting started with touch sensing control on STM32 microcontrollers
      1.0
      3.82 MB
      PDF
      AN4750
      Handling of soft errors in STM32 applications
      2.1
      410.84 KB
      PDF
      AN4803
      High-speed SI simulations using IBIS and board-level simulations using HyperLynx SI on STM32 32-bit ARM® Cortex® MCUs
      1.1
      2.03 MB
      PDF
      AN2834
      How to get the best ADC accuracy in STM32 microcontrollers
      3.1
      1.08 MB
      PDF
      AN4229
      How to implement a vocoder solution using STM32 microcontrollers
      1.1
      466 KB
      PDF
      AN4991
      How to wake up an STM32F0/F3/L0/L4 microcontroller from low-power mode with the USART or the LPUART
      1.0
      317.73 KB
      PDF
      AN4221
      I2C protocol used in the STM32 bootloader
      7.0
      714.89 KB
      PDF
      AN4099
      Implementation of transmitters and receivers for infrared remote control protocols with MCUs of the STM32F0 and STM32F3 Series
      3.0
      750.64 KB
      PDF
      AN4299
      Improve conducted noise robustness for touch sensing applications on MCUs
      5.0
      626.39 KB
      PDF
      AN3236
      Increase the number of touchkeys for touch sensing applications on MCUs
      5.0
      177.24 KB
      PDF
      AN5156
      Introduction to STM32 microcontrollers security
      2.0
      3.07 MB
      PDF
      AN3070
      Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32™’s USART
      1.4
      188.96 KB
      PDF
      AN4617
      Migrating between STM32F0 and STM32L0 microcontrollers
      1.0
      461.73 KB
      PDF
      AN4088
      Migrating between STM32F1 and STM32F0 series microcontrollers
      3.0
      1.23 MB
      PDF
      AN3364
      Migration and compatibility guidelines for STM32 microcontroller applications
      3.2
      123.09 KB
      PDF
      AN4705
      Migration guidelines from PIC18 to STM32F0 Series with software expansion for STM32Cube
      2.0
      1.04 MB
      PDF
      AN5145
      Migration of applications from STM32F0 Series to STM32G0 Series
      1.0
      370.25 KB
      PDF
      AN2867
      Oscillator design guide for STM8AF/AL/S and STM32 microcontrollers
      11.0
      2.79 MB
      PDF
      AN4899
      STM32 GPIO configuration for hardware settings and low-power consumption
      1.1
      651.9 KB
      PDF
      AN4908
      STM32 USART automatic baud rate detection
      1.0
      268.24 KB
      PDF
      AN4013
      STM32 cross-series timer overview
      7.0
      755.18 KB
      PDF
      AN4989
      STM32 microcontroller debug toolbox
      2.0
      5.12 MB
      PDF
      AN2606
      STM32 microcontroller system memory boot mode
      37.0
      3.84 MB
      PDF
      AN4735
      STM32Cube firmware examples for STM32F0 Series
      6.0
      421.11 KB
      PDF
      AN2945
      STM8S and STM32™ MCUs: a consistent 8/32-bit product line for painless migration
      1.4
      209.97 KB
      PDF
      AN4310
      Sampling capacitor selection guide for touch sensing applications on MCUs
      4.0
      140.79 KB
      PDF
      AN5036
      Thermal management guidelines for STM32 applications
      3.0
      4.84 MB
      PDF
      AN4316
      Tuning a touch sensing application on MCUs
      4.0
      1.64 MB
      PDF
      AN3155
      USART protocol used in the STM32 bootloader
      9.0
      628.14 KB
      PDF
      AN3156
      USB DFU protocol used in the STM32 bootloader
      8.0
      375.82 KB
      PDF
      AN5225
      USB Type-C™ Power Delivery using STM32xx Series MCUs and STM32xxx Series MPUs
      1.0
      1.42 MB
      PDF
      AN4711
      USB audio bridge example with STM32F0 MCUs
      1.0
      1.8 MB
      PDF
      AN4879
      USB hardware and PCB guidelines using STM32 MCUs
      4.0
      334.83 KB
      PDF
      AN4277
      Using STM32 device PWM shut-down features for motor control and digital power conversion
      4.0
      834.03 KB
      PDF
      AN2548
      Using the STM32F0/F1/Lx Series DMA controller
      5.0
      289.28 KB
      PDF
      AN3371
      Using the hardware real-time clock (RTC) in STM32 F0, F2, F3, F4 and L1 series of MCUs
      5.2
      417.99 KB
      PDF
      AN4759
      Using the hardware real-time clock (RTC) in low-power modes with STM32 microcontrollers
      4.0
      1.25 MB
      PDF
      AN4655
      Virtually increasing the number of serial communication peripherals in STM32 applications
      1.1
      338.99 KB
      PDF
      AN3126

      Audio and waveform generation using the DAC in STM32 microcontrollers

      AN4775

      Basics and low-cost solution proposals to move from legacy USB2.0 connector to USB Type-C™ connector with STM32 devices

      AN4067

      Calibrating STM32F0x1, STM32F0x2 and STM32F0x8 lines internal RC oscillators

      AN4312

      Design with surface sensors for touch sensing applications on MCUs

      AN1709

      EMC design guide for STM8, STM32 and Legacy MCUs

      AN3960

      ESD considerations for touch sensing applications on MCUs

      AN1181

      Electrostatic discharge sensitivity measurement

      AN4566

      Extending the DAC performance of STM32 microcontrollers

      AN4776

      General-purpose timer cookbook

      AN4080

      Getting started with STM32F0x1/x2/x8 hardware development

      AN5105

      Getting started with touch sensing control on STM32 microcontrollers

      AN4750

      Handling of soft errors in STM32 applications

      AN4803

      High-speed SI simulations using IBIS and board-level simulations using HyperLynx SI on STM32 32-bit ARM® Cortex® MCUs

      AN2834

      How to get the best ADC accuracy in STM32 microcontrollers

      AN4229

      How to implement a vocoder solution using STM32 microcontrollers

      AN4991

      How to wake up an STM32F0/F3/L0/L4 microcontroller from low-power mode with the USART or the LPUART

      AN4221

      I2C protocol used in the STM32 bootloader

      AN4099

      Implementation of transmitters and receivers for infrared remote control protocols with MCUs of the STM32F0 and STM32F3 Series

      AN4299

      Improve conducted noise robustness for touch sensing applications on MCUs

      AN3236

      Increase the number of touchkeys for touch sensing applications on MCUs

      AN5156

      Introduction to STM32 microcontrollers security

      AN3070

      Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32™’s USART

      AN4617

      Migrating between STM32F0 and STM32L0 microcontrollers

      AN4088

      Migrating between STM32F1 and STM32F0 series microcontrollers

      AN3364

      Migration and compatibility guidelines for STM32 microcontroller applications

      AN4705

      Migration guidelines from PIC18 to STM32F0 Series with software expansion for STM32Cube

      AN5145

      Migration of applications from STM32F0 Series to STM32G0 Series

      AN2867

      Oscillator design guide for STM8AF/AL/S and STM32 microcontrollers

      AN4899

      STM32 GPIO configuration for hardware settings and low-power consumption

      AN4908

      STM32 USART automatic baud rate detection

      AN4013

      STM32 cross-series timer overview

      AN4989

      STM32 microcontroller debug toolbox

      AN2606

      STM32 microcontroller system memory boot mode

      AN4735

      STM32Cube firmware examples for STM32F0 Series

      AN2945

      STM8S and STM32™ MCUs: a consistent 8/32-bit product line for painless migration

      AN4310

      Sampling capacitor selection guide for touch sensing applications on MCUs

      AN5036

      Thermal management guidelines for STM32 applications

      AN4316

      Tuning a touch sensing application on MCUs

      AN3155

      USART protocol used in the STM32 bootloader

      AN3156

      USB DFU protocol used in the STM32 bootloader

      AN5225

      USB Type-C™ Power Delivery using STM32xx Series MCUs and STM32xxx Series MPUs

      AN4711

      USB audio bridge example with STM32F0 MCUs

      AN4879

      USB hardware and PCB guidelines using STM32 MCUs

      AN4277

      Using STM32 device PWM shut-down features for motor control and digital power conversion

      AN2548

      Using the STM32F0/F1/Lx Series DMA controller

      AN3371

      Using the hardware real-time clock (RTC) in STM32 F0, F2, F3, F4 and L1 series of MCUs

      AN4759

      Using the hardware real-time clock (RTC) in low-power modes with STM32 microcontrollers

      AN4655

      Virtually increasing the number of serial communication peripherals in STM32 applications

    • Description Version Size Action
      TN1163
      Description of WLCSP for microcontrollers and recommendations for its use
      4.0
      1.07 MB
      PDF
      TN1204
      Tape and reel shipping media for STM32 microcontrollers in BGA packages
      2.1
      745.74 KB
      PDF
      TN1205
      Tape and reel shipping media for STM8 and STM32 microcontrollers in FPN packages
      3.0
      753.31 KB
      PDF
      TN1206
      Tape and reel shipping media for STM8 and STM32 microcontrollers in QFP packages
      3.0
      830.98 KB
      PDF
      TN1207
      Tape and reel shipping media for STM8 and STM32 microcontrollers in SO packages
      1.0
      755.03 KB
      PDF
      TN1208
      Tape and reel shipping media for STM8 and STM32 microcontrollers in TSSOP and SSOP packages
      1.0
      743.08 KB
      PDF
      TN1163

      Description of WLCSP for microcontrollers and recommendations for its use

      TN1204

      Tape and reel shipping media for STM32 microcontrollers in BGA packages

      TN1205

      Tape and reel shipping media for STM8 and STM32 microcontrollers in FPN packages

      TN1206

      Tape and reel shipping media for STM8 and STM32 microcontrollers in QFP packages

      TN1207

      Tape and reel shipping media for STM8 and STM32 microcontrollers in SO packages

      TN1208

      Tape and reel shipping media for STM8 and STM32 microcontrollers in TSSOP and SSOP packages

    • Description Version Size Action
      RM0091
      STM32F0x1/STM32F0x2/STM32F0x8 advanced ARM®-based 32-bit MCUs
      9.0
      13.51 MB
      PDF
      RM0091

      STM32F0x1/STM32F0x2/STM32F0x8 advanced ARM®-based 32-bit MCUs

    • Description Version Size Action
      PM0215
      STM32F0xxx Cortex-M0 programming manual
      1.2
      823.23 KB
      PDF
      PM0215

      STM32F0xxx Cortex-M0 programming manual

    • Description Version Size Action
      ES0243
      STM32F042x4/x6 device errata
      3.0
      494.52 KB
      PDF
      ES0243

      STM32F042x4/x6 device errata

HW Model, CAD Libraries & SVD

    • Description Version Size Action
      STM32F0 CAD Symbol and Footprint files 1.3
      5.04 MB
      ZIP
      STM32F0 IBIS models 1.0
      8.52 MB
      ZIP
      STM32F0 System View Description 1.3
      211.24 KB
      ZIP

      STM32F0 CAD Symbol and Footprint files

      STM32F0 IBIS models

      STM32F0 System View Description

Presentations & Training Material

    • Description Version Size Action
      Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: FAQ 1.0
      290.85 KB
      PDF
      Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: Webinar Presentation 1.0
      4.28 MB
      PDF
      Getting started with STM32F0 or STM32L0 series 1.0.0
      606.79 KB
      PDF
      STM32 - 32-bit ARM Cortex-M MCUs 3.0
      1.71 MB
      PDF
      STM32 Development Boards Portfolio 1.0
      3.08 MB
      PDF
      STM32 and STM8 Functional Safety Packages 3.2
      1.38 MB
      PDF
      STM32 and STM8 embedded software solutions 7.0
      3.12 MB
      PDF

      Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: FAQ

      Discover the STM32 with a free 32-bit Cortex-M0/0+ MCU Professional Developer’s Package: Webinar Presentation

      Getting started with STM32F0 or STM32L0 series

      STM32 - 32-bit ARM Cortex-M MCUs

      STM32 Development Boards Portfolio

      STM32 and STM8 Functional Safety Packages

      STM32 and STM8 embedded software solutions

Publications and Collaterals

    • Description Version Size Action
      Get ready for the largest IoT development ecosystem 19.01
      629.13 KB
      PDF
      ST Motor Control Suite - All-in-One online tool for motor control resources 1.1
      771.96 KB
      PDF
      STM32 Nucleo boards - Unified scalable offering 19.01
      1.49 MB
      PDF
      STM32 for makers - Releasing your creativity 18.01
      1.76 MB
      PDF

      Get ready for the largest IoT development ecosystem

      ST Motor Control Suite - All-in-One online tool for motor control resources

      STM32 Nucleo boards - Unified scalable offering

      STM32 for makers - Releasing your creativity

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      STM32 32-bit MCU family - Leading supplier of Arm® Cortex®-M microcontrollers 18.02
      2.06 MB
      PDF
      STM32F0 Series - Mainstream 32-bit MCUs 17.07
      1.97 MB
      PDF

      Electric vehicle (EV) ecosystem

      STM32 32-bit MCU family - Leading supplier of Arm® Cortex®-M microcontrollers

      STM32F0 Series - Mainstream 32-bit MCUs

Quality & Reliability

    • Description Version Size Action
      STM32 CAN conformance test authentication sheet 1.0
      182.62 KB
      PDF

      STM32 CAN conformance test authentication sheet

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM32F042K6T6
Active
LQFP 32 7x7x1.4 Industrial Ecopack2
STM32F042K6T6TR
Active
LQFP 32 7x7x1.4 Industrial Ecopack2
STM32F042K6T7
Active
LQFP 32 7x7x1.4 Industrial Ecopack2
STM32F042K6U6
Active
UFQFPN 32 5x5x0.55 Industrial Ecopack2
STM32F042K6U7
Active
UFQFPN 32 5x5x0.55 Industrial Ecopack2

STM32F042K6T6

Package:

LQFP 32 7x7x1.4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 32 7x7x1.4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STM32F042K6T6TR

Package:

LQFP 32 7x7x1.4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 32 7x7x1.4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STM32F042K6T7

Package:

LQFP 32 7x7x1.4

Material Declaration**:

PDF XML

Marketing Status

Active

Package

LQFP 32 7x7x1.4

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STM32F042K6U6

Package:

UFQFPN 32 5x5x0.55

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55

Grade

Industrial

RoHS Compliance Grade

Ecopack2

STM32F042K6U7

Package:

UFQFPN 32 5x5x0.55

Material Declaration**:

PDF XML

Marketing Status

Active

Package

UFQFPN 32 5x5x0.55

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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.