STMicroelectronics STM32F303R6T6

Overview

STM32F303R6T6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 72 MHz, featuring 64 KB Flash, 12 KB SRAM with hardware parity, and integrated analog peripherals including two 12-bit ADCs (21-channel, 0.20 µs conversion), three 12-bit DACs, three rail-to-rail comparators, and one programmable-gain operational amplifier. It targets motor control, digital power conversion, and industrial sensing systems requiring real-time signal processing and mixed-signal integration.

For engineers reviewing the STM32F303R6T6 datasheet, STM32F303R6T6 pinout, STM32F303R6T6 application, or STM32F303R6T6 equivalent, key selection criteria include its dual ADC architecture with differential mode support, 18-capacitive-touch-channel TSC, CAN 2.0B interface, and 51 fast I/Os with 5 V tolerance - all in an LQFP64 package suitable for space-constrained embedded designs.

Technical Context

The STM32F303R6T6 implements a tightly coupled Cortex-M4 core with single-cycle multiply and hardware divide, delivering 90 DMIPS at 72 MHz from CCM memory. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting deterministic timing for real-time control loops.

Analog subsystem integration includes independent voltage domains: VDDA (2.0–3.6 V) for ADC/DAC/COMP, and dedicated 2.4–3.6 V analog supply for OPAMP and DACs. The device supports simultaneous sampling across two ADCs and features a built-in temperature sensor with ±1.5°C accuracy over –40 to +85°C.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK®2 finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F303K6T6 and STM32F303C8T6, the STM32F303R6T6 offers the highest analog integration density (3 DACs, 1 OPAMP, 3 COMP) and largest SRAM with parity in LQFP64 - making it optimal for applications demanding simultaneous high-resolution analog acquisition, real-time computation, and industrial communications.

Availability

STM32F303R6T6 is available at Aetrix Electronics and suitable for motor control systems, digital power supplies, industrial HMIs, and condition monitoring sensors requiring stable component supply and long-term production support.

Supply support for STM32F303R6T6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, performance-driven embedded applications requiring rich analog integration and real-time control - designed specifically for digital power, motor control, and human-machine interface subsystems.

FAQ

What is the maximum operating frequency and core type of the STM32F303R6T6?

The STM32F303R6T6 features an Arm Cortex-M4 core with FPU, rated for a maximum operating frequency of 72 MHz. It achieves 90 DMIPS performance from CCM memory and supports single-cycle multiplication and hardware division - enabling efficient execution of floating-point math and DSP instructions required for motor control and digital power algorithms.

Does the STM32F303R6T6 support hardware CRC calculation and memory parity checking?

Yes, the STM32F303R6T6 includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with multiple polynomial standards (e.g., CRC-32). It also provides hardware parity checking on both 12 KB main SRAM and the 4 KB CCM RAM booster - ensuring data integrity for safety-critical applications such as IEC 60730-compliant appliance controllers.

What analog peripherals are integrated into the STM32F303R6T6 and what are their key electrical specifications?

The device integrates two 12-bit ADCs (21-channel total, 0.20 µs conversion time, 0–3.6 V range), three 12-bit DACs (2.4–3.6 V analog supply), three rail-to-rail comparators (2–3.6 V supply), and one programmable-gain operational amplifier (2.4–3.6 V supply, gain 1–100×). All analog blocks feature independent voltage domains and hardware-calibrated references for consistent performance across temperature and supply variation.

Which communication interfaces does the STM32F303R6T6 support, and are they isolated from noise-sensitive analog sections?

The STM32F303R6T6 supports CAN 2.0B, up to three USARTs (one with ISO7816), I²C, and SPI. Its physical layout separates digital I/O banks from analog domains (VDDA/VSSA), and the interconnect matrix isolates peripheral clock domains - minimizing crosstalk between high-speed digital interfaces and precision analog circuits during simultaneous operation.