STMicroelectronics STM32F302VEH6

Overview

STM32F302VEH6 from STMicroelectronics is a 32-bit ARM® Cortex®-M4 microcontroller with FPU, operating at up to 72 MHz, featuring 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 motor control, digital power conversion, and industrial sensing systems.

For engineers reviewing the STM32F302VEH6 datasheet, STM32F302VEH6 pinout, STM32F302VEH6 application, or STM32F302VEH6 equivalent, key selection considerations include its dual ADC architecture with selectable 6/8/10/12-bit resolution, 2.0–3.6 V analog supply range for analog blocks, CAN 2.0B interface, and LQFP100 package with 89 I/Os (including 5 V-tolerant pins).

Technical Context

The device integrates an ARM Cortex-M4 core with hardware FPU, single-cycle MAC, and DSP instructions, coupled with a memory protection unit (MPU) for secure embedded execution. Its analog subsystem includes two independent ADCs sharing a common clock but supporting simultaneous sampling, plus dedicated VREFINT and temperature sensor channels for calibration-critical applications.

Clock management supports multiple sources: 4–32 MHz HSE crystal, 32 kHz LSE for RTC, 8 MHz HSI with PLL multiplication, and 40 kHz LSI. The interconnect matrix enables concurrent peripheral access without bus contention, while the flexible static memory controller (FSMC) supports NOR/PSRAM/NAND and PC Card interfaces.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 89 user I/Os, including 5 V-tolerant pins, VDD/VSS power pairs distributed for noise suppression, dedicated VDDA/VSSA analog supplies, and separate VBAT pin for RTC backup.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F302VEH6, the STM32F303VET6 trades FSMC for USB DFU and sigma-delta ADC capability, while the STM32G474RET6 offers significantly higher compute throughput and analog density but requires board redesign due to non-pin-compatible packaging and altered peripheral mapping.

Availability

STM32F302VEH6 is available at Aetrix Electronics and suitable for motor control systems, digital power supplies, industrial sensor hubs, and human-machine interfaces requiring stable component supply across extended production lifecycles.

Supply support for STM32F302VEH6 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.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - emphasizing integrated precision analog (ADC/DAC/OPAMP/COMP), real-time control (advanced timers, FPU), and industrial connectivity (CAN, USB, multiple UARTs).

FAQ

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

The STM32F302VEH6 operates at up to 72 MHz using its internal 8 MHz HSI oscillator multiplied by the PLL. An external 4–32 MHz crystal (HSE) is optional but recommended for timing-critical applications like USB or CAN synchronization, where ±100 ppm stability is required. The internal RC oscillators alone do not meet USB or CAN timing specifications.

Does this MCU support hardware CRC calculation and how is it implemented?

Yes, the STM32F302VEH6 includes a dedicated CRC calculation unit compliant with CRC-32 (IEEE 802.3). It operates independently of the CPU via DMA or register writes, supporting programmable polynomial (default 0x04C11DB7) and configurable data size (8/16/32-bit). This unit is used for firmware image integrity checks, EEPROM data validation, and communication packet checksumming without CPU overhead.

How many I/O pins are 5 V-tolerant and which ports support this feature?

40 I/O pins across GPIO ports A, B, C, D, E, F, and G are 5 V-tolerant - specifically all pins except those with analog functions (e.g., ADC inputs, OPAMP inverting/non-inverting terminals) and certain debug pins (SWDIO, SWCLK). Tolerance is unconditional (no external resistor required) and verified per ST's electrical characteristics table (Section 6.3.15), enabling direct interfacing with 5 V logic without level shifters.

Can the two operational amplifiers be configured as programmable-gain amplifiers, and what gain ranges are supported?

Yes, both op-amps support PGA mode using internal programmable resistors. Gain settings include 1, 2, 4, 8, 16, and 32 (non-inverting configuration only), selected via OPAMPx_CSR register bits. Input common-mode range is 0 to VDDA – 0.05 V, and output swing is rail-to-rail. This eliminates external gain-setting resistors in sensor signal chains, reducing BOM count and layout area while maintaining calibration traceability.