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STMicroelectronics STM32F103RCT6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F103RCT6 STM32F1 ARM Cortex-M3 MCU, 72MHz, 256KB Flash

MPNSTM32F103RCT6
Active

STMicroelectronics STM32F1 series STM32F103RCT6, ARM Cortex-M3 32-Bit Single-Core MCU, 72MHz, 256KB Flash, 48K x 8 RAM, 51 I/O, 64-LQFP, -40°C to 85°C, 2V to 3.6V supply.

$3.95059Ref. price · indicative, final on quote
STMicroelectronics STM32F103RCT6 datasheet (PDF)
Packaging64-LQFP
RoHSROHS3 Compliant
SeriesSTM32F1
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32F103RCT6 specifications
ParameterValue
SeriesSTM32F1
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed72MHz
PackageTray
RAM size48K x 8
Core size32-Bit Single-Core
PeripheralsDMA, Motor Control PWM, PDR, POR, PVD, PWM, Temp Sensor, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB
Number of i (O)51
Core processorARM® Cortex®-M3
Case64-LQFP
Data convertersA/D 16x12b; D/A 2x12b
Program memory size256KB (256K x 8)

Product details

What this 72 MHz Cortex-M3 brings to the board

The STM32F103RCT6: It carries 51 general-purpose I/O lines, a full set of connectivity options including CANbus, USB, SPI, I²C, and multiple UART/USART channels, plus a 16-channel 12-bit ADC and a 2-channel 12-bit DAC. This is the high-density variant in the 64-pin LQFP package, giving you the memory and peripheral headroom for motor control, industrial fieldbus nodes, or human-machine interfaces without stepping up to a larger footprint.

256 KB of Flash and 48 KB of SRAM are available on this device.

Peripheral set for industrial and embedded control

The peripheral list includes DMA, motor control PWM, programmable voltage detector (PVD), power-on reset (POR), brown-out reset (PDR), a temperature sensor, and a watchdog timer.

Frequently asked questions

Is STM32F103RCT6 still active or obsolete?

STMicroelectronics continues production of the STM32F1 series, so there is no end-of-life or last-time-buy risk on this BOM line.

Can STM32F103RCT6 replace STM32F103C8T6?

Yes, the STM32F103RCT6 is a higher-density variant in the same family. The C8T6 has 64 KB Flash and 20 KB SRAM, while the RCT6 has 256 KB Flash and 48 KB SRAM. Both are 64-pin LQFP with the same pinout, so the RCT6 is a drop-in replacement that gives you more memory headroom — just update your firmware project to use the larger Flash layout.