STMicroelectronics STM32F303RCT7

Overview

STM32F303RCT7 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating at up to 72 MHz, featuring 256 KB Flash, 48 KB SRAM (including 8 KB CCM-SRAM), four 12-bit ADCs (39-channel, 0.2 µs conversion), two 12-bit DACs, seven rail-to-rail comparators, and four programmable-gain operational amplifiers. It integrates CAN 2.0B, USB 2.0 FS, five USART/UARTs, three SPIs (two with I2S), two I²C Fast-mode-plus interfaces, and 24-channel capacitive touch sensing - deployed in motor control, industrial sensor fusion, and analog-intensive embedded systems.

For engineers reviewing the STM32F303RCT7 datasheet, STM32F303RCT7 pinout, STM32F303RCT7 application, or STM32F303RCT7 equivalent, key selection criteria include its dual DAC + quad PGA analog subsystem, 72 MHz deterministic real-time performance with MPU, 2.0–3.6 V supply range, and LQFP64 package compatibility with legacy STM32F3 designs.

Technical Context

This microcontroller implements a tightly coupled Arm Cortex-M4 core with hardware floating-point unit and memory protection unit (MPU), enabling deterministic real-time execution of DSP-intensive algorithms such as field-oriented motor control and digital power regulation. Its interconnect matrix decouples peripheral bus arbitration from CPU timing, reducing latency for concurrent ADC sampling, DMA transfers, and timer-triggered DAC updates.

The analog subsystem features independent voltage domains: VDDA (2.0–3.6 V) powers all precision analog blocks (ADCs, DACs, OPAMPs, COMP), while VREFOPAMP and VREFINT provide stable internal references. The four OPAMPs support fully configurable PGA modes (gain 1–100) with externally accessible terminals, and all seven comparators include programmable hysteresis and window mode - critical for fast overcurrent detection in power stage monitoring.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VCT6, the RCT7 trades pin count for compactness and cost efficiency; compared with STM32G431KB6, it prioritizes integrated analog flexibility over raw CPU speed - making it optimal for cost-sensitive, analog-intensive industrial edge nodes where component count reduction is critical.

Availability

STM32F303RCT7 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor hubs, programmable power supplies, and human-machine interfaces requiring stable component supply and long-term industrial lifecycle support.

Supply support for STM32F303RCT7 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, analog, and MEMS technologies for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications - designed to integrate precision analog peripherals (OPAMPs, PGAs, comparators, DACs) with real-time Cortex-M4 processing in a single chip for motor control, digital power, and sensor signal conditioning.

FAQ

What is the maximum operating frequency and supported voltage range for STM32F303RCT7?

The STM32F303RCT7 operates at up to 72 MHz using its internal PLL and supports a VDD/VDDA supply range of 2.0 V to 3.6 V. Its core logic runs from VDD, while analog peripherals (ADC, DAC, OPAMP, COMP) require VDDA within the same range but must be decoupled separately to maintain signal integrity. Absolute maximum ratings specify 4.0 V for all supply pins.

Does STM32F303RCT7 support hardware-based motor control features like deadtime insertion and complementary PWM?

Yes - it integrates two advanced-control timers (TIM1 and TIM8) that natively support complementary PWM outputs with programmable deadtime (down to 1 ns resolution), automatic fault protection, and emergency stop functionality. These timers directly interface with gate drivers in 3-phase inverter topologies without external logic or FPGA assistance.

How many analog peripherals are integrated, and can they operate simultaneously?

The device integrates four 12-bit ADCs (up to 39 channels total), two 12-bit DACs, seven rail-to-rail comparators, and four operational amplifiers configurable as PGAs. All analog blocks share the same VDDA domain and can operate concurrently - for example, ADCs sampling motor currents while DACs generate reference voltages and comparators monitor overcurrent conditions in real time.

Is the STM32F303RCT7 pin-compatible with other STM32F3 series MCUs in LQFP64 package?

Yes - it shares identical pinout and electrical characteristics with other STM32F303xB/C variants in LQFP64 (e.g., STM32F303RBT6, STM32F303RCT6), differing only in Flash/SRAM size and feature enablement. Firmware and PCB layout are interchangeable across these parts, enabling scalable design reuse without hardware revision.