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ARM® Cortex®-M3 STM32F1 Microcontroller IC 32-Bit Single-Core 24MHz 128KB (128K x 8) FLASH 48-LQFP (7x7)

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Brands: STMicroelectronics, Inc

Mfr.Part #: STM32F100CBT6B

Datasheet: STM32F100CBT6B Datasheet (PDF)

Package/Case: QFP-48

Product Type: Embedded Processors & Controllers

RoHS Status:

Stock Condition: 2164 pcs, New Original

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STM32F100CBT6B General Description

The STM32F100x4, STM32F100x6, STM32F100x8 and STM32F100xB microcontrollers incorporate the high-performance ARM®Cortex®-M3 32-bit RISC core operating at a 24 MHz frequency, high-speed embedded memories (Flash memory up to 128 Kbytes and SRAM up to 8 Kbytes), and an extensive range of enhanced peripherals and I/Os connected to two APB buses. All devices offer standard communication interfaces (up to two I2Cs, two SPIs, one HDMI CEC, and up to three USARTs), one 12-bit ADC, two 12-bit DACs, up to six general-purpose 16-bit timers and an advanced-control PWM timer.The STM32F100xx low- and medium-density devices 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 mode allows the design of low-power applications.These microcontrollers include devices in three different packages ranging from 48 pins to 100 pins. Depending on the device chosen, different sets of peripherals are included.These features make these microcontrollers suitable for a wide range of applications such as application control and user interfaces, medical and hand-held equipment, PC and gaming peripherals, GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms, and HVACs.



  • Core: ARM®32-bit Cortex®-M3 CPU
    • 24 MHz maximum frequency,1.25 DMIPS/MHz (Dhrystone 2.1) performance
    • Single-cycle multiplication and hardware division
  • Memories
    • 16 to 128 Kbytes of Flash memory
    • 4 to 8 Kbytes of SRAM
  • Clock, reset and supply management
    • 2.0 to 3.6 V application supply and I/Os
    • POR, PDR and programmable voltage detector (PVD)
    • 4-to-24 MHz crystal oscillator
    • Internal 8 MHz factory-trimmed RC
    • Internal 40 kHz RC
    • PLL for CPU clock
    • 32 kHz oscillator for RTC with calibration
  • Low power
    • Sleep, Stop and Standby modes
    • VBATsupply for RTC and backup registers
  • Debug mode
    • Serial wire debug (SWD) and JTAG interfaces
  • DMA
    • 7-channel DMA controller
    • Peripherals supported: timers, ADC, SPIs, I2Cs, USARTs and DACs
  • 1 × 12-bit, 1.2 μs A/D converter (up to 16 channels)
    • Conversion range: 0 to 3.6 V
    • Temperature sensor
  • 2 × 12-bit D/A converters
  • Up to 80 fast I/O ports
    • 37/51/80 I/Os, all mappable on 16 external interrupt vectors and almost all 5 V-tolerant
  • Up to 12 timers
    • Up to three 16-bit timers, each with up to 4 IC/OC/PWM or pulse counter
    • 16-bit, 6-channel advanced-control timer: up to 6 channels for PWM output, dead time generation and emergency stop
    • One 16-bit timer, with 2 IC/OC, 1 OCN/PWM, dead-time generation and emergency stop
    • Two 16-bit timers, each with IC/OC/OCN/PWM, dead-time generation and emergency stop
    • 2 watchdog timers (Independent and Window)
    • SysTick timer: 24-bit downcounter
    • Two 16-bit basic timers to drive the DAC
  • Up to 8 communications interfaces
    • Up to two I2C interfaces (SMBus/PMBus)
    • Up to 3 USARTs (ISO 7816 interface, LIN,


Parameter Value Parameter Value
Manufacturer: STMicroelectronics Product Category: ARM Microcontrollers - MCU
RoHS: Details Series: STM32F100CB
Mounting Style: SMD/SMT Core: ARM Cortex M3
Program Memory Size: 128 kB Data Bus Width: 32 bit
ADC Resolution: 12 bit Maximum Clock Frequency: 24 MHz
Number of I/Os: 37 I/O Data RAM Size: 8 kB
Supply Voltage - Min: 2 V Supply Voltage - Max: 3.6 V
Minimum Operating Temperature: - 40 C Maximum Operating Temperature: + 85 C
Packaging: Tray Brand: STMicroelectronics
Interface Type: I2C, SPI, USART Moisture Sensitive: Yes
Product Type: ARM Microcontrollers - MCU Factory Pack Quantity: 1500
Subcategory: Microcontrollers - MCU Tradename: STM32
Unit Weight: 0.006409 oz


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Datasheet PDF

Preliminary Specification STM32F100CBT6B PDF Download

Key points

  • The STM32F100CBT6B is a 32-bit ARM Cortex-M3 microcontroller from STMicroelectronics. It features a 48 MHz clock speed, 128 KB flash memory, and 8 KB RAM. It has various peripherals including ADC, timers, SPI, USART, and I2C. The chip is suitable for a wide range of applications including industrial control, consumer electronics, and home automation.
  • Equivalent

    Some equivalent products of the STM32F100CBT6B chip include STM32F100C4T6B, STM32F100C6T6B, STM32F100C8T6B, and STM32F100CCT6B. These microcontrollers are all part of the STM32F1 series and share similar features and performance capabilities.
  • Features

    STM32F100CBT6B is a 32-bit ARM Cortex-M3 microcontroller with 24 MHz frequency and 128 KB of Flash memory. It has 16 KB of SRAM, 37 GPIO pins, 4 ADC channels, and multiple communication interfaces like USART, SPI, and I2C. It also features a 12-bit DAC, DMA controller, and low-power modes for energy efficiency.
  • Pinout

    The STM32F100CBT6B is a 32-bit microcontroller with 48 pins, which includes GPIO, UART, SPI, I2C, ADC, DAC, timers, PWM, and communication interfaces. It features a 24 MHz ARM Cortex-M3 core, 128KB flash memory, and 24KB RAM. Key functions include general-purpose input/output (GPIO), communication protocols, and analog-to-digital conversion (ADC).
  • Manufacturer

    The manufacturer of the STM32F100CBT6B is STMicroelectronics. STMicroelectronics is a multinational semiconductor and electronics company that designs, manufactures, and markets a wide range of products, including microcontrollers, sensors, power management ICs, and more. They are a key player in the semiconductor industry, providing innovative solutions for a variety of applications.
  • Application Field

    The STM32F100CBT6B is commonly used in a variety of applications including motor control, industrial automation, smart grid, appliances, power tools, automotive, healthcare, and gaming peripherals. Its high performance, low power consumption, and embedded peripherals make it a versatile microcontroller for a wide range of embedded systems.
  • Package

    The STM32F100CBT6B chip comes in a LQFP package type, with 48 pins. It is in the form of an Integrated Circuit (IC) and has a size of 7 mm x 7 mm.

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