STMicroelectronics STM32F302RET7TR

Overview

STM32F302RET7TR from STMicroelectronics is an ARM® Cortex®-M4 32-bit microcontroller with FPU, 72 MHz max CPU frequency, 512 KB Flash, 64 KB SRAM (with HW parity on first 32 KB), 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 industrial motor control, digital power supplies, and sensor fusion systems.

For engineers reviewing the STM32F302RET7TR datasheet, STM32F302RET7TR pinout, STM32F302RET7TR application, or STM32F302RET7TR equivalent, key selection considerations include its dual ADC architecture with independent analog supplies (2.0–3.6 V), flexible FSMC interface for external memory expansion, CAN 2.0B support, and capacitive touch sensing capability across up to 24 channels.

Technical Context

The device implements a tightly coupled ARM Cortex-M4 core with hardware FPU, single-cycle MAC, and DSP instruction set, paired with a memory protection unit (MPU) for secure task isolation. Its analog subsystem integrates two independent 12-bit ADCs with selectable resolution (6/8/10/12 bits), separate VDDA supply domain, and hardware oversampling - enabling simultaneous high-speed current/voltage sampling in motor control loops.

Clock management includes dual oscillators (4–32 MHz HSE + 32 kHz LSE), internal 8 MHz RC with x16 PLL, and 40 kHz LSI; peripheral interconnect uses a multi-layer AHB/APB matrix supporting concurrent DMA transfers across ADC, DAC, timers, and communication interfaces - critical for deterministic real-time response in closed-loop systems.

Key Specifications

Pinout & Package

LQFP64 package (10 × 10 mm, 0.5 mm pitch), thermally enhanced with exposed thermal pad; 64-pin square-outline quad flat pack suitable for automated optical inspection and reflow-compatible PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302RET7TR, the STM32F303RET7 offers higher ADC speed and CCM RAM for compute-intensive tasks, while the STM32G431KBT6 delivers significantly higher CPU clock and op-amp bandwidth - making it more suitable for demanding real-time control where latency and analog fidelity are critical.

Availability

STM32F302RET7TR is available at Aetrix Electronics and suitable for industrial motor control, digital power supplies, capacitive touch interfaces, and multi-channel data acquisition systems requiring stable component supply across extended product lifecycles.

Supply support for STM32F302RET7TR 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 management ICs, sensors, and automotive-grade components since 1987.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - combining high-precision mixed-signal peripherals with Cortex-M4 performance to simplify system architecture in motor control, digital power, and human interface designs.

FAQ

What is the maximum operating frequency and supported voltage range for STM32F302RET7TR?

The STM32F302RET7TR operates at up to 72 MHz CPU frequency with a VDD supply range of 2.0 V to 3.6 V. Its analog peripherals require separate VDDA supply within 2.0–3.6 V (ADC/COMP) or 2.4–3.6 V (DAC/OPAMP), and VDDA must not fall below VDD during operation to maintain specification compliance.

Does STM32F302RET7TR support hardware CRC calculation and memory protection?

Yes, it includes a dedicated CRC calculation unit compliant with IEEE-802.3 and a full-featured memory protection unit (MPU) supporting eight regions with configurable size, access permissions, and subregion disable - enabling secure RTOS partitioning and firmware integrity verification.

How many analog-to-digital converters does STM32F302RET7TR integrate, and what are their key capabilities?

It integrates two independent 12-bit ADCs with up to 18 input channels total, 0.20 µs conversion time, and selectable resolution (6/8/10/12 bits). Each ADC supports hardware oversampling, injected/conversion sequencing, and external trigger synchronization - enabling simultaneous sampling of current and voltage in motor control applications.

Is STM32F302RET7TR pin-compatible with other STM32F3 devices in the LQFP64 package?

Yes, it shares identical pinout with STM32F302RDT6, STM32F302R8T6, and STM32F303RET7 in LQFP64 - allowing drop-in replacement within the same density and feature subset; however, firmware must verify peripheral enablement and clock configuration due to differences in Flash size and optional features like CCM RAM.