STMicroelectronics STM32F303VCT7

Overview

STM32F303VCT7 from STMicroelectronics is an Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 72 MHz, featuring 256 KB Flash, 48 KB SRAM (including 8 KB CCM), four 12-bit ADCs (39-channel, 0.2 µs conversion), two 12-bit DACs, seven rail-to-rail comparators, and four programmable-gain operational amplifiers. It integrates CAN 2.0B, USB FS, multiple timers including advanced-control timers with deadtime generation, and capacitive touch sensing - deployed in motor control, digital power supplies, and industrial sensor hubs.

For engineers reviewing the STM32F303VCT7 datasheet, STM32F303VCT7 pinout, STM32F303VCT7 application, or STM32F303VCT7 equivalent, key selection criteria include analog peripheral integration (ADC/DAC/PGA/COMP), real-time timer capabilities for PWM-driven systems, CAN+USB dual-interface support, and LQFP100 package compatibility with high I/O count (87 fast I/Os, several 5 V-tolerant).

Technical Context

This MCU implements a tightly coupled interconnect matrix enabling concurrent access to Flash, SRAM, and peripherals without bus contention. Its analog subsystem includes independent voltage domains: VDDA (2.0–3.6 V) for ADCs and comparators, and dedicated 2.4–3.6 V supply for DACs and op-amps - enabling mixed-signal precision in noisy environments.

The timer architecture combines three classes: two 32-/16-bit general-purpose timers with quadrature encoder input, two 16-bit advanced-control timers supporting 6-channel complementary PWM with programmable deadtime and emergency stop, and two basic timers dedicated to DAC triggering - all synchronized via the APB clock tree with configurable prescalers and auto-reload registers.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 pins, 87 of which are fast I/Os - all mappable to external interrupt vectors, several 5 V-tolerant, supporting flexible signal routing across analog, digital, and communication domains.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303RCT7, the STM32F303VCT7 delivers 36 additional GPIOs, full TSC support, dual DACs, and expanded ADC channel mapping - essential for complex motor control and sensor fusion. Versus STM32G431KBT6, it retains CAN 2.0B and broader communication flexibility at the cost of lower ADC throughput, making it superior for industrial fieldbus-connected systems.

Availability

STM32F303VCT7 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 and long-term production continuity.

Supply support for STM32F303VCT7 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, high-precision analog-intensive applications - emphasizing integrated op-amps, comparators, PGAs, and capacitive touch - enabling compact, high-performance embedded systems without external signal-conditioning components.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F303VCT7 achieves a maximum CPU frequency of 72 MHz using its internal 8 MHz RC oscillator multiplied by a PLL with programmable dividers. The PLL accepts input from HSE (4–32 MHz crystal), HSI (8 MHz), or LSE (32.768 kHz), and supports fractional-N synthesis for precise clock generation. All peripherals derive clocks from this system clock via configurable prescalers, ensuring deterministic timing for real-time tasks.

Does the device support hardware-based cryptographic acceleration?

No, the STM32F303VCT7 does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for encryption/decryption. Security features are limited to the Memory Protection Unit (MPU) for privilege-level memory isolation and 96-bit unique ID for device identification - sufficient for basic anti-cloning but not for secure boot or TLS offload.

How many independent analog supply domains does it have, and why does it matter?

The device uses three independent analog supply domains: VDDA (2.0–3.6 V) for ADCs/comparators, VREF+ (2.4–3.6 V) for DACs, and VREFOPAMP (2.4–3.6 V) for op-amps. This separation prevents digital switching noise from coupling into sensitive analog circuits, preserving ENOB in ADC measurements and linearity in DAC outputs - critical for closed-loop control accuracy in motor and power applications.

Can the capacitive touch sensing controller operate during low-power modes?

Yes, the Touch Sensing Controller (TSC) can operate in Stop mode with the LSE (32.768 kHz) running, enabling wake-on-touch with typical current consumption below 1.5 µA. It supports automatic acquisition sequencing, charge transfer measurement, and baseline drift compensation - allowing responsive, low-power HMI operation without waking the CPU until a valid touch event occurs.