Manufacturer: STMicroelectronics

Key Specifications

• Package: LQFP-64
• Core: ARM Cortex-M3
• Frequency: 72 MHz (max)
• Flash: 256 KB
• SRAM: 48 KB
• Interfaces: USART, SPI, I2C, USB, CAN
• Voltage: 2.0V - 3.6V
• Temperature: -40°C to +85°C

The STM32F103RCT6 is a mainstream 32-bit microcontroller from STMicroelectronics, based on the ARM Cortex-M3 core. It operates at a maximum frequency of 72 MHz, providing a balanced combination of performance, memory, and peripheral integration for a wide range of embedded applications. The device comes in a compact 64-pin LQFP package, making it suitable for space-constrained designs.

Key Features

• ARM 32-bit Cortex-M3 CPU with a maximum clock speed of 72 MHz
• 256 KB of Flash memory and 48 KB of SRAM
• Rich set of communication interfaces: up to 5 USARTs, 3 SPIs, 2 I2Cs, USB 2.0 full-speed, and CAN
• Multiple 12-bit ADCs, DAC, and advanced timers for control applications
• Operating voltage range: 2.0V to 3.6V
• Temperature range: -40°C to +85°C (industrial grade)
• Low-power modes: Sleep, Stop, and Standby

Applications

This microcontroller is well-suited for industrial control, motor drives, PLCs, consumer electronics, communication modules, and various IoT edge devices. Its combination of memory and peripherals enables complex firmware and real-time control tasks.

Selection Notes

When selecting the STM32F103RCT6, consider the required I/O count, memory footprint, and communication interfaces. The 64-pin LQFP package offers a moderate pin count, and the 256KB Flash provides ample space for application code. For lower memory requirements, other variants in the STM32F103 series may be considered. Always verify the latest datasheet for exact specifications and errata.