STM32F1 - Arm Cortex-M3 Microcontrollers

ST's STM32F1 Series of mainstream MCUs covers the needs of a large variety of applications in the industrial, medical and consumer markets. With this series, ST has pioneered the world of Arm^® Cortex™-M microcontrollers and set a milestone in the history of embedded applications. High performance with first-class peripherals and low-power, low-voltage operation is paired with a high level of integration at accessible prices with a simple architecture and easy-to-use tools.

The series consists of five product lines which are pin-to-pin, peripheral and software compatible.

STM32F100 Value line – 24 MHz CPU with motor control and CEC functions
STM32F101 – 36 MHz CPU, up to 1 Mbyte of Flash
STM32F102 – 48 MHz CPU with USB FS
STM32F103 – 72 MHz, up to 1 Mbyte of Flash with motor control, USB and CAN
STM32F105/107 – 72 MHz CPU with Ethernet MAC, CAN and USB 2.0 OTG

Read more about the benefits of the 32-bit Arm Cortex-M3 processor for MCUs here.

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The STM32F1 series offers a seamless transition from 8-bit to 32-bit microcontrollers, using the Arm® Cortex™-M3 core to deliver robust performance for industrial, medical, and consumer applications.
Operating at speeds up to 72 MHz, the series provides up to 1 Mbyte of flash memory and includes features like motor control, USB, CAN, and Ethernet MAC. With five product lines that are pin-to-pin, peripheral, and software compatible, it ensures easy integration and scalability.
The STM32F1 series, combine high performance with low-power operation at an accessible price point, supported by a straightforward architecture and user-friendly tools.

Applications

EV chargers

Industrial and factory automation

Metering

Digital Power

Product types

STM32F100 Value line

With a CPU running at 24 MHz, this product line offers up to eleven 16‑bit timers, including a motor‑control timer, and a fast 12‑bit ADC with a 1.2 µs conversion time for efficient appliance and industrial control applications.

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STM32F101

WCortex^®-M3 core running at 36 MHz. The portfolio covers from 16 Kbyte to 1 Mbyte of flash, and offers a good trade-off between performance and cost.

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STM32F102

Cortex^®-M3 core, with a maximum CPU speed of 48 MHz. It provides a USB full-speed interface and is a smart solution for applications requiring USB.

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STM32F103

Cortex^®-M3 core, with a maximum CPU speed of 72 MHz. The portfolio covers from 16 Kbytes to 1 Mbyte of flash with motor control peripherals, USB full-speed interface and CAN.

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STM32F105/107

Cortex^®-M3 core, with a maximum CPU speed of 72 MHz. Intended for applications where connectivity and real-time performances are required such as industrial control, control panels for security applications, UPS, or home audio, this product covers from 64 to 256 Kbytes of on-chip flash memory, up to 64 Kbytes of SRAM, and 14 communication interfaces.

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Discover our portfolio

Product line	CPU (MHz)	Flash (Mbytes)	RAM (Kbytes)	Modulation
STM32F100 Value line	24	16 to 512	4 to 32	FSMC, 3-phase MC timer, and HDMI-CEC
STM32F10	36	16 To 1M	4 To 80	FSMC
STM32F102	48	16 To 128	4 To 16	USB 2.0 FS
STM32F103	72	16 To 1M	4 To 96	USB 2.0 FS, FSMC, CAN 2.0B, 3-phase MC timer, I²C, and SDIO
STM32F105 STM32F107	72	64 To 256	64	USB 2.0 FS, FSMC, CAN 2.0B, 3-phase MC timer, I²C, and Ethernet IEEE1588

Development tools for STM32F1 series

Pre-certified reference designs

Blue and white electronic development board with a central microcontroller and multiple input/output pins.

STM32F103RB MCU

STM32 Nucleo-64 Nucleo board

Pre-certified reference designs

STM32F100RB MCU

Discovery kit

Benefits

Good performance

The STM32F1 series features industry-leading 32-bit microcontrollers powered by the Arm® Cortex™-M3 core, offering speeds up to 72 MHz for robust application support.

Versatile integration

With comprehensive features including motor control, USB, CAN, and Ethernet MAC, the STM32F1 series provides developers with adaptable solutions for diverse industrial, medical, and consumer applications.

Accessible

Designed with a straightforward architecture, the STM32F1 series combines high performance with low-power operation at an accessible price point, ensuring ease of integration and scalability across its pin-to-pin compatible product lines.