Mainstream ARM Cortex-M0 Access line MCU with 128 Kbytes Flash, 48 MHz CPU, CAN and CEC functions

The STM32F091xB/xC 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 256 Kbytes of Flash memory and 32 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. The device offers standard communication interfaces (two I2Cs, two SPIs/one I2S, one HDMI CEC and up to eight USARTs), one CAN, one 12-bit ADC, one 12-bit DAC with two channels, seven 16-bit timers, one 32-bit timer and an advanced-control PWM timer.

The STM32F091xB/xC 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 STM32F091xB/xC microcontrollers include devices in seven different packages ranging from 48 pins to 100 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included.

These features make the STM32F091xB/xC 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
    • 128 to 256 Kbytes of Flash memory
    • 32 Kbytes of SRAM with HW parity
  • CRC calculation unit
  • Reset and power management
    • Digital & I/Os supply: VDD = 2.0 V to 3.6 V
    • Analog supply: VDDA = 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
    • Internal 48 MHz oscillator with automatic trimming based on ext. synchronization
  • Up to 88 fast I/Os
    • All mappable on external interrupt vectors
    • Up to 69 I/Os with 5V-tolerant capability and 19 with independent supply VDDIO2
  • 12-channel DMA controller
  • One 12-bit, 1.0 μs ADC (up to 16 channels)
    • Conversion range: 0 to 3.6 V
    • Separate analog supply: 2.4 V to 3.6 V
  • One 12-bit D/A converter (with 2 channels)
  • Two fast low-power analog comparators with programmable input and output
  • Up to 24 capacitive sensing channels for touchkey, linear and rotary touch sensors
  • Calendar RTC with alarm and periodic wakeup from Stop/Standby
  • 12 timers
    • One 16-bit advanced-control timer for 6 channel PWM output
    • One 32-bit and seven 16-bit timers, with up to 4 IC/OC, OCN, usable for IR control decoding or DAC control
    • Independent and system watchdog timers
    • SysTick timer
  • Communication interfaces
    • Two I2 C interfaces supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, one supporting SMBus/PMBus and wakeup
    • Up to eight USARTs supporting master synchronous SPI and modem control, three with ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup feature
    • Two SPIs (18 Mbit/s) with 4 to 16 programmable bit frames, and with I2 S interface multiplexed
    • CAN interface
  • HDMI CEC wakeup on header reception
  • Serial wire debug (SWD)
  • 96-bit unique ID
  • All packages ECOPACK® 2

Circuit Diagram

bd_stm32f091xb_128k

Design

Quality & Reliability

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

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
STM32F0 series - Mainstream 32-bit MCUs 15.08 1 MB

HW Model & CAD Libraries

HW Model & CAD Libraries
Description Version Size
STM32F0 CAD Symbol and Footprint files 1.1 2 MB
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 1 MB
STM32 and STM8 embedded software solutions 2.0 2 MB

Technical Documentation

Product Specifications
Description Version Size
DS10312 DS10312: ARM®-based 32-bit MCU, up to 256 KB Flash, CAN, 12 timers, ADC, DAC, and comm. interfaces, 2.0 - 3.6V 4.0 1 MB
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
RM0091 RM0091: STM32F0x1/STM32F0x2/STM32F0x8 advanced ARM®-based 32-bit MCUs 9.0 13 MB
Programming Manuals
Description Version Size
PM0215 PM0215: STM32F0xxx Cortex-M0 programming manual 1.1 822 KB
Errata Sheets
Description Version Size
ES0282 ES0282: STM32F091xB/xC device limitations 2.0 375 KB

Tools and Software

Development Tools
Embedded Software
Evaluation Tools
Hardware Development Tools
Software Development Tools
MCUs Embedded Software
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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
STM32F091VBT7 LQFP 100 14x14x1.4 Tray -40 105 Active 2.017 10000 NEC 3A991A2 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
STM32F091VBT6 LQFP 100 14x14x1.4 Tray -40 85 Active 1.886 10000 NEC 3A991A2 MALAYSIA MORE INFO DISTRIBUTOR AVAILABILITY
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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**
STM32F091VBT7 ActiveLQFP 100 14x14x1.4IndustrialEcopack2
STM32F091VBT6 ActiveLQFP 100 14x14x1.4IndustrialEcopack2 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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