STMicroelectronics STM32F302RET7

Overview

STM32F302RET7 from STMicroelectronics is a 32-bit ARM® Cortex®-M4 microcontroller with FPU, 72 MHz max CPU frequency, 512 KB Flash, 64 KB SRAM (first 32 KB with hardware parity), and integrated analog peripherals including two 12-bit ADCs (18-channel, 0.20 µs conversion), one 12-bit DAC, four rail-to-rail comparators, and two operational amplifiers usable in PGA mode - deployed in motor control, digital power conversion, and industrial sensor interface systems.

For engineers reviewing the STM32F302RET7 datasheet, STM32F302RET7 pinout, STM32F302RET7 application, or STM32F302RET7 equivalent, key selection criteria include its dual ADC architecture with independent analog supplies (2.0–3.6 V), flexible FSMC for external memory expansion, CAN 2.0B interface, and 115 fast I/Os with 5 V tolerance - all critical for real-time embedded control designs requiring mixed-signal integration and deterministic timing.

Technical Context

The STM32F302RET7 implements a tightly coupled Cortex-M4 core with single-cycle multiply, hardware divide, DSP extensions, and MPU for memory protection - enabling deterministic execution in safety-aware applications. Its analog subsystem features two independent ADCs with selectable resolution (6/8/10/12-bit) and simultaneous sampling capability, plus dedicated VREFOPAMP and VREFINT references for precision signal conditioning.

Clock management includes four oscillator sources (4–32 MHz HSE, 32 kHz LSE, 8 MHz HSI with x16 PLL, 40 kHz LSI), supporting dynamic voltage/frequency scaling across Sleep/Stop/Standby low-power modes. The interconnect matrix enables concurrent peripheral access without bus contention, essential for high-throughput data acquisition and real-time control loops.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), 64-pin quad flat pack with exposed thermal pad - optimized for compact industrial PCB layouts and thermal dissipation in motor drive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302RET7, STM32F303RET7 offers more on-chip memory for complex algorithms without external expansion, while STM32G431KBT6 delivers faster computation and superior analog performance at the cost of FSMC - making the RET7 optimal for cost-sensitive, memory-flexible industrial controllers requiring external peripherals.

Availability

STM32F302RET7 is available at Aetrix Electronics and suitable for motor control systems, digital power converters, industrial sensor nodes, and human-machine interfaces requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F302RET7 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-effective, high-precision mixed-signal control applications - emphasizing integrated analog peripherals, real-time responsiveness, and low-power operation for industrial automation and digital power.

FAQ

What is the maximum operating frequency and core type of the STM32F302RET7?

The STM32F302RET7 features an ARM Cortex-M4 core with floating-point unit (FPU), capable of running at up to 72 MHz. It supports single-cycle multiplication, hardware division, and DSP instructions - delivering deterministic real-time performance for control algorithms such as field-oriented control (FOC) and digital power regulation without external co-processors.

Does the STM32F302RET7 support external memory expansion?

Yes, the STM32F302RET7 integrates a Flexible Static Memory Controller (FSMC) supporting NOR, PSRAM, NAND, and PC Card interfaces. It provides four chip-select lines and fully programmable timing parameters - enabling direct connection to external displays, serial flash, or data buffers without external address latches or glue logic, particularly valuable in HMI and data-logging applications.

How many analog-to-digital converters does the STM32F302RET7 have, and what are their key capabilities?

The STM32F302RET7 includes two independent 12-bit ADCs with up to 18 input channels total, 0.20 µs conversion time, and selectable resolution (6/8/10/12-bit). Each ADC supports hardware oversampling, injected/conversion sequences, and separate analog supply (2.0–3.6 V) - allowing simultaneous sampling of motor phase currents and DC bus voltage in digital power applications with minimal latency.

Is the STM32F302RET7 pin-compatible with other STM32F3 devices?

The STM32F302RET7 in LQFP64 is pin-compatible with other STM32F302x6 and STM32F303x6 variants (e.g., STM32F303RET7), sharing identical pin definitions and peripheral mappings. However, it is not compatible with LQFP100 or UFBGA100 packages of the same family - mechanical and signal routing must match the 64-pin footprint and electrical characteristics specified in the datasheet.