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STMicroelectronics STM32F303RBT7 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32F303RBT7 STM32F3 ARM Cortex-M4 MCU, 72 MHz

MPNSTM32F303RBT7
Active

ST STM32F3 series STM32F303RBT7, ARM Cortex-M4 32-bit MCU, 72 MHz, 128 KB Flash, 32K x 8 RAM, 52 I/O, 22x12b ADC + 2x12b DAC, CANbus, USB, -40°C to 105°C, 64-LQFP.

$7.6600Ref. price · indicative, final on quote
STMicroelectronics STM32F303RBT7 datasheet (PDF)
Packaging64-LQFP
RoHSROHS3 Compliant
SeriesSTM32F3
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32F303RBT7 specifications
ParameterValue
SeriesSTM32F3
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C ~ 105°C (TA)
Speed72MHz
PackageTray
RAM size32K x 8
Core size32-Bit Single-Core
PeripheralsDMA, I²S, POR, PWM, WDT
ConnectivityCANbus, I²C, IrDA, LINbus, SPI, UART/USART, USB
Number of i (O)52
Core processorARM® Cortex®-M4
Case64-LQFP
Data convertersA/D 22x12b; D/A 2x12b
Program memory size128KB (128K x 8)

Product details

Analog front-end for motor and power control

The STM32F303RBT7 carries 22 multiplexed 12-bit ADC channels and two 12-bit DAC outputs — a channel count and converter set that directly supports three-phase motor current sensing (typically two or three shunt resistors) plus a DC-link voltage measurement, with the DACs generating analog setpoints or offset cancellation voltages. The Cortex-M4's single-cycle MAC and FPU handle field-oriented control (FOC) loops without an external DSP or dedicated motor-control coprocessor.

Peripherals and connectivity for system integration

The 52 general-purpose I/O pins in the 64-LQFP package leave room for parallel sensor interfaces and local control signals.

Frequently asked questions

Can I use STM32F303RBT7 for motor control applications?

Yes. The Cortex-M4 FPU and DSP instructions, combined with 22 analog input channels and dual DAC outputs, make this part well-suited for field-oriented control of brushless DC and permanent-magnet synchronous motors. The 72 MHz core provides enough headroom for the control loop plus communication stack.

How does STM32F303RBT7 compare to the STM32L151CBU6A?

The STM32L151CBU6A uses an older Cortex-M3 core clocked at 32 MHz, has 37 I/O, and is rated to 85°C. The STM32F303RBT7 offers a faster Cortex-M4 with FPU at 72 MHz, 52 I/O, and a 105°C temperature grade — a significant step up in processing capability and environmental margin for motor-control and industrial applications.