STMicroelectronics STM32F302R8T7

Overview

STM32F302R8T7 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 64 KB Flash, 16 KB SRAM, integrated USB 2.0 full-speed interface, CAN 2.0B controller, and analog peripherals including 12-bit DAC, rail-to-rail comparators, and programmable-gain operational amplifier. It operates from 2.0–3.6 V and targets motor control, industrial sensing, and human-machine interface applications requiring mixed-signal integration.

For engineers reviewing the STM32F302R8T7 datasheet, STM32F302R8T7 pinout, STM32F302R8T7 application, or STM32F302R8T7 equivalent, key selection criteria include its 72 MHz CPU clock with DSP extensions, 15-channel 12-bit ADC (0.20 μs conversion), dual 16-bit advanced timers with deadtime generation, and LQFP64 package with 51 I/Os - all critical for real-time embedded control design.

Technical Context

The STM32F302R8T7 implements an Arm Cortex-M4 core with hardware floating-point unit and DSP instruction set, enabling deterministic execution of motor control algorithms and sensor fusion. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting simultaneous ADC sampling, DAC output, and CAN message transmission.

It integrates three independent analog subsystems: a 12-bit DAC with dedicated 16-bit basic timer (TIM6) for waveform generation; one rail-to-rail op-amp configurable as PGA with external gain-setting resistors; and three ultra-fast comparators with internal reference options - all sharing a common analog supply domain (2.0–3.6 V) but electrically isolated from digital domains.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 51 I/O pins, all mappable to external interrupt vectors, several 5 V-tolerant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302R8T7, the STM32F303R8T7 adds redundancy in analog acquisition paths while maintaining identical pinout and software compatibility; the STM32G431RBT6 delivers significantly higher computational throughput and analog bandwidth but requires PCB redesign due to different package (LQFP64 vs LQFP64 with altered pin functions) and voltage regulator architecture.

Availability

STM32F302R8T7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, human-machine interfaces, and power supply monitoring requiring stable component supply across extended production lifecycles.

Supply support for STM32F302R8T7 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.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications - designed to integrate precision signal conditioning, real-time control, and connectivity into single-chip solutions for industrial and consumer equipment.

FAQ

What is the maximum operating temperature range for STM32F302R8T7?

The STM32F302R8T7 is rated for industrial temperature range: –40 °C to +85 °C ambient. This is validated per datasheet Section 6.3.1 and applies to all LQFP64 variants. Thermal derating begins above 70 °C ambient when operating at full 72 MHz with multiple peripherals active; junction temperature must remain below 125 °C per absolute maximum ratings.

Does STM32F302R8T7 support USB device mode only, or can it act as a USB host?

The STM32F302R8T7 implements a USB 2.0 full-speed device-only controller - it cannot operate as a USB host. The peripheral lacks OTG capabilities, dedicated host PHY, or SOF generation circuitry. It supports CDC, HID, and MSC class devices via standard USB device stack; external USB host functionality requires companion ICs like USB3300 or MAX3421E.

How many independent PWM outputs can be generated simultaneously on this MCU?

Up to 12 independent PWM outputs can be generated simultaneously: 6 from TIM1 (advanced-control timer), 2 from TIM2, 2 from TIM15, and 2 from TIM16/TIM17. All channels support programmable polarity, deadtime (on TIM1), and complementary output pairs. This count assumes no resource conflict - e.g., using PA8–PA15 for TIM1 CH1–CH4 and PB0–PB13 for TIM3 CH1–CH4 would require careful pin mapping per Table 13 in DS9896 Rev 8.

Is the internal op-amp usable as a unity-gain buffer without external components?

Yes - the internal op-amp supports unity-gain buffer configuration using only internal routing (non-inverting input tied to desired source pin, output fed back to inverting input). No external resistors or capacitors are needed for basic buffering. However, stability under capacitive loads > 100 pF requires external compensation per Section 3.13 of DS9896, and gain accuracy depends on internal resistor matching (±1% typical).