STMicroelectronics STM32F303VBT7

Overview

STM32F303VBT7 from STMicroelectronics is an Arm® Cortex®-M4 32-bit microcontroller with FPU, operating up to 72 MHz, featuring 128 KB Flash, 40 KB SRAM (with HW parity on first 16 KB), and integrated analog peripherals including four 12-bit ADCs, two 12-bit DACs, seven rail-to-rail comparators, and four operational amplifiers usable as programmable gain amplifiers (PGAs). It supports CAN 2.0B, USB FS, multiple UART/SPI/I²C, and capacitive touch sensing - deployed in motor control, digital power supplies, and industrial sensor hubs.

For engineers reviewing the STM32F303VBT7 datasheet, STM32F303VBT7 pinout, STM32F303VBT7 application, or STM32F303VBT7 equivalent, key selection criteria include its dual DAC channels with 2.4–3.6 V analog supply, 72 MHz deterministic real-time performance with MPU, 5 V-tolerant GPIOs, and integrated analog signal chain for closed-loop control without external signal conditioning.

Technical Context

The STM32F303VBT7 implements a tightly coupled Cortex-M4 core with single-cycle multiply, hardware divide, and DSP extensions, paired with a memory protection unit (MPU) for secure task isolation in RTOS environments. Its interconnect matrix enables concurrent peripheral access without bus contention, supporting deterministic timing for time-critical control loops.

Analog subsystem integration includes independent voltage domains: VDDA (2.0–3.6 V) for ADC/DAC/COMP/OPAMP, with dedicated 2.4–3.6 V analog supply for DACs and OPAMPs, and separate 2.0–3.6 V range for comparators - enabling mixed-signal precision while maintaining digital logic integrity at 3.3 V.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 87 fast I/Os - all mappable to external interrupt vectors, several 5 V-tolerant for direct interfacing with legacy logic or sensors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303VBT7, the STM32F303RCT7 trades I/O count for memory scalability in smaller packages, while the STM32G431KBT6 offers superior analog speed and compute density but omits CAN - making the VBT7 optimal for CAN-connected industrial motion systems needing balanced I/O, analog integration, and proven ecosystem support.

Availability

STM32F303VBT7 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 multi-year production cycles.

Supply support for STM32F303VBT7 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications - delivering high-precision signal acquisition and real-time control in a single-chip solution for motor drives, digital power, and smart sensing.

FAQ

What is the maximum operating frequency and corresponding supply voltage range?

The STM32F303VBT7 operates at up to 72 MHz with a VDD range of 2.0–3.6 V. At 72 MHz, it requires VDD ≥ 2.7 V per electrical characteristics (Section 6.3.1). The core uses an internal voltage regulator; VDDA must be within 2.0–3.6 V independently to maintain analog peripheral accuracy and avoid reset conditions.

Does the device support hardware CRC calculation and memory protection?

Yes - it integrates a dedicated CRC calculation unit compliant with IEEE-802.3 (32-bit polynomial) for firmware image validation and data integrity checks. It also includes a Memory Protection Unit (MPU) supporting eight regions with configurable size, access permissions, and subregion disable - enabling RTOS task isolation and secure boot enforcement per IEC 61508 requirements.

How many analog-to-digital converters does the STM32F303VBT7 have, and what are their key capabilities?

The device features four independent 12-bit ADCs with conversion times as fast as 0.20 µs, supporting up to 39 input channels. Each ADC offers selectable resolution (6/8/10/12 bits), single-ended or differential input modes, and a 0–3.6 V input range. They share a common analog supply (VDDA = 2.0–3.6 V) and support hardware oversampling and injected channel sequencing for priority sampling.

What debug interfaces are supported, and is SWD sufficient for full development?

The STM32F303VBT7 supports Serial Wire Debug (SWD) and JTAG via the SWJ-DP interface. SWD is fully sufficient for development - providing full read/write memory access, breakpoint setting, real-time variable monitoring, and flash programming. The embedded trace macrocell (ETM) enables instruction trace capture for performance analysis, and the 96-bit unique ID supports secure firmware binding and device authentication.