STMicroelectronics STM32F303VCT7TR

Overview

STM32F303VCT7TR 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 operational amplifiers configurable as programmable-gain amplifiers (PGAs). It targets motor control, analog signal processing, and capacitive touch applications in industrial and consumer systems.

For engineers reviewing the STM32F303VCT7TR datasheet, STM32F303VCT7TR pinout, STM32F303VCT7TR application, or STM32F303VCT7TR equivalent, key selection considerations include its integrated analog front-end (4 OPAMPs + 7 COMP + 4 ADCs), CAN 2.0B interface, USB 2.0 FS support, and LQFP100 package with 87 fast I/Os - all critical for real-time mixed-signal embedded designs.

Technical Context

This MCU integrates a Cortex-M4 core with hardware floating-point unit and memory protection unit (MPU), enabling deterministic real-time execution and secure memory partitioning. Its interconnect matrix decouples peripheral bus arbitration from CPU timing, supporting concurrent high-bandwidth transfers across ADCs, DACs, timers, and communication interfaces.

The analog subsystem features dedicated supply domains (VDDA 2.4–3.6 V for DAC/OPAMP, 2.0–3.6 V for ADC/COMP) with independent reference inputs (VREFINT, VREFOPAMP), enabling simultaneous precision measurement, signal conditioning, and actuator drive without cross-domain noise coupling.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; 100-pin footprint supporting full peripheral mapping including VDDA/VSSA separation, dedicated analog ground pins, and 87 GPIOs - 52 of which are 5 V-tolerant for mixed-voltage system interfacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303RCT7, the STM32F303VCT7TR delivers full GPIO count, TSC, and larger SRAM for complex analog preprocessing; versus STM32G474RET6, it offers proven PGA-based signal conditioning at lower cost and maturity, though with lower clock speed and memory capacity.

Availability

STM32F303VCT7TR is available at Aetrix Electronics and suitable for motor control systems, industrial sensor nodes, capacitive touch HMIs, and programmable power supplies requiring stable component supply and long-term manufacturability.

Supply support for STM32F303VCT7TR 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, analog-intensive embedded applications - emphasizing integrated precision analog peripherals, real-time control capability, and energy efficiency in compact packages.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32F303VCT7TR operates at up to 72 MHz using its internal PLL. Its VDD and VDDA supply ranges are 2.0 V to 3.6 V and 2.4 V to 3.6 V respectively. The device incorporates a programmable voltage detector (PVD) that triggers interrupts or resets when VDD drops below a user-configurable threshold, ensuring reliable operation across industrial voltage tolerances.

Does this MCU support hardware encryption or secure boot?

No, the STM32F303VCT7TR does not include hardware cryptographic accelerators (AES, SHA, PKA) or secure boot ROM. It features a memory protection unit (MPU) for runtime privilege separation and supports software-based secure bootloader implementations, but lacks dedicated security peripherals found in STM32L5 or STM32H7 series devices.

How many analog channels can be sampled simultaneously, and what is the ADC resolution?

Four independent 12-bit ADCs are integrated, each supporting up to 16 external channels. While true simultaneous sampling across all four ADCs is not supported, they can be triggered synchronously via timer or software for tightly coordinated acquisition. Resolution is selectable per ADC at 12/10/8/6 bits, with typical INL of ±1.5 LSB at 12-bit mode and 0.2 µs conversion time at maximum speed.

What debug interfaces are available, and is SWD supported?

The STM32F303VCT7TR supports Serial Wire Debug (SWD) and JTAG via its SWJ-DP (Serial Wire JTAG Debug Port). SWD uses only two pins (SWCLK and SWDIO) and is the recommended interface for production programming and debugging. It also includes ETM (Embedded Trace Macrocell) for instruction-level tracing when used with compatible debug probes like ST-LINK/V3.