STM32F103x8/xB ARM Cortex-M3 Microcontroller

Specifications

Product Overview

The STM32F103x8/xB performance line family integrates an ARM Cortex-M3 32-bit RISC core with embedded Flash and SRAM memory architecture optimized for embedded real-time applications. The MCU family supports operating voltages from 2.0 V to 3.6 V and includes advanced peripheral integration such as USB full-speed, CAN bus, SPI, I2C, USART, DMA controller, RTC, watchdog timers, and multiple PWM-capable timers.

The devices include up to 80 GPIOs with external interrupt capability and support several package configurations ranging from 36-pin VFQFPN to 100-pin LFBGA packages. The STM32F103xx family provides compatibility across low-, medium-, and high-density variants, allowing scalable firmware and hardware migration during product development.

The integrated low-power modes include Sleep, Stop, and Standby modes to support energy-sensitive embedded systems. The clock management subsystem supports internal RC oscillators, external crystal oscillators, PLL-based clock multiplication, and RTC clock domains.

Key Features

• ARM Cortex-M3 core operating up to 72 MHz
• Embedded Flash memory up to 128 KB
• 20 KB embedded SRAM
• Dual 12-bit ADCs with up to 16 channels
• USB 2.0 full-speed interface
• CAN 2.0B active interface
• Up to 3 USART interfaces
• Up to 2 SPI interfaces
• Up to 2 I2C interfaces
• 7-channel DMA controller
• Up to 80 GPIOs with interrupt capability
• Sleep, Stop, and Standby low-power modes
• Integrated RTC and backup registers
• Serial Wire Debug (SWD) and JTAG support
• Compatible with automated SMT assembly
• ECOPACK compliant package options

Typical Applications

• Industrial automation systems
• Motor control and drives
• PLC and industrial controllers
• Consumer embedded electronics
• USB-enabled embedded devices
• CAN-based communication systems
• Security and alarm systems
• Medical and handheld equipment
• GPS platforms
• HVAC control systems
• Smart instrumentation
• Embedded IoT gateways

Procurement Notes

When requesting a quote for STM32F103x8 / STM32F103xB, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.

If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.

For MCU, processor and logic IC sourcing, package, operating voltage, temperature grade, speed or frequency grade, firmware or mask version, lifecycle status and programming requirements should be checked before approval.