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STMicroelectronics STM32F103R8T7TR — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F103R8T7TR STM32F1 ARM Cortex-M3 MCU, 72 MHz

MPNSTM32F103R8T7TR
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STMicroelectronics STM32F1 series, ARM Cortex-M3, 32-Bit Single-Core MCU, 72MHz, 64KB (64K x 8) FLASH, 20K x 8 RAM, CANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB, 51 I/O, 64-LQFP, -40°C~105°C (TA), 2V ~ 3.6V supply.

$4.3940Ref. price · indicative, final on quote
STMicroelectronics STM32F103R8T7TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F103R8T7TR specifications
ParameterValue
SeriesSTM32F1
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C~105°C(TA)
Speed72MHz
PackageTape & Reel (TR)
RAM size20K 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
Program memory size64KB (64K x 8)

Product details

72 MHz Cortex-M3 with industrial temperature range

The STM32F103R8T7TR: Peripherals include DMA, motor control PWM, a temperature sensor, and watchdog timers (PDR, POR, PVD).

64 KB Flash — sizing the firmware budget

The 64 KB Flash (64K x 8) stores application firmware. The 20K x 8 SRAM supports buffers or a modest heap.

Data converters and I/O count

An integrated 12-bit ADC with 16 multiplexed channels handles analog sensor inputs — current sensing, potentiometer feedback, or temperature monitoring — without an external ADC. The 51 I/O pins are enough to interface with a parallel LCD, keypad matrix, or multiple SPI/I²C peripherals while leaving headroom for debug and status LEDs.

Frequently asked questions

What is the flash memory size of STM32F103R8T7TR?

This is enough for moderate firmware with a real-time kernel, CAN stack, and USB device class drivers.

STM32F103R8T7TR vs STM32F103C8T6?

The STM32F103C8T6 is a 48-pin LQFP with 37 I/O and 64 KB Flash, but it lacks the CAN interface and has fewer ADC channels. The STM32F103R8T7TR has 51 I/O, CAN, and a 64-pin package, so it is the better choice for designs needing CAN bus or more GPIO. If your board already routes the 48-pin footprint, the C8T6 is the fit; otherwise, the R8T7TR gives more headroom.