STMicroelectronics STM32F302R6T6

Overview

STM32F302R6T6 from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, 32 KB Flash, 16 KB SRAM, and integrated analog peripherals including 12-bit DAC, three rail-to-rail comparators, one operational amplifier, and a 12-bit ADC (0.20 µs conversion). It operates from 2.0–3.6 V and supports USB 2.0 full-speed, CAN 2.0B, and up to 51 GPIOs - used in motor control and sensor fusion systems requiring real-time analog signal conditioning.

For engineers reviewing the STM32F302R6T6 datasheet, STM32F302R6T6 pinout, STM32F302R6T6 application, or STM32F302R6T6 equivalent, key selection criteria include its embedded op-amp for programmable gain amplification, dual-domain USART with auto-baudrate detection, 72 MHz CPU clock with single-cycle multiply/HW divide, and capacitive touch sensing support across 18 channels.

Technical Context

The STM32F302R6T6 implements a tightly coupled Cortex-M4 core with FPU and DSP extensions, enabling deterministic execution of control loops and sensor data processing. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting simultaneous ADC sampling, DAC output, and CAN message transmission.

Analog subsystem integration includes dedicated voltage domains: VDDA (2.0–3.6 V) for ADC/COMP, VREF+ (2.4–3.6 V) for DAC/op-amp, and independent calibration registers for VREFINT and temperature sensor. The advanced-control timer (TIM1) provides 6-channel PWM with deadtime insertion and emergency stop - essential for three-phase motor gate drive.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for compact motor driver PCBs and industrial control modules requiring thermal reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302R6T6, the STM32F303R6T6 offers more Flash and dual DACs for expanded functionality, while the STM32G431RBT6 delivers higher CPU speed and ADC performance at the cost of CAN support and increased BOM complexity.

Availability

STM32F302R6T6 is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, human-machine interfaces, and power supply monitoring requiring stable component supply and long-term production support.

Supply support for STM32F302R6T6 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 ICs, sensors, and automotive-grade components since 1987.

The STM32F3 series targets cost-sensitive, analog-intensive applications such as motor control, digital power, and sensor signal conditioning - emphasizing integrated op-amps, comparators, and high-speed ADCs to reduce external component count.

FAQ

What is the maximum operating frequency and does it require external clock circuitry?

The STM32F302R6T6 runs at up to 72 MHz using its internal 8 MHz RC oscillator with PLL multiplication, eliminating mandatory external crystals. However, for USB or CAN timing accuracy, a 4–32 MHz external crystal is recommended - the 8 MHz HSI can be trimmed to ±1% for basic operation without external components.

Does this MCU support hardware-based functional safety features for motor control?

Yes - it includes independent and window watchdog timers, programmable voltage detector (PVD), memory protection unit (MPU), and advanced-control timer (TIM1) with emergency stop input. These meet IEC 60730 Class B requirements when implemented per ST's AN4229 and UM1834 guidelines for safe startup and fault response.

Can the integrated op-amp be used as a standalone instrumentation amplifier?

No - the single op-amp supports non-inverting, inverting, and PGA configurations using external resistors, but lacks dedicated instrumentation amplifier topology (three-op-amp structure). It can condition shunt-based current sense signals effectively, but for high CMRR (>80 dB), an external INA is recommended.

Is the LQFP48 package RoHS-compliant and what is its thermal resistance (θ_JA)?

Yes - the STM32F302R6T6 in LQFP48 (7 × 7 mm) is RoHS-compliant and halogen-free. Its typical junction-to-ambient thermal resistance is 50 °C/W under JEDEC JESD51-7 standard conditions (1-layer 1 oz copper, 1 in² pad), dropping to ~35 °C/W with full thermal pad soldering per datasheet layout rules.