STMicroelectronics STM32F373VBT6

Overview

STM32F373VBT6 from STMicroelectronics is a 32-bit ARM® Cortex®-M4 microcontroller with FPU and MPU, operating up to 72 MHz, featuring 256 KB Flash, 32 KB SRAM, three 12-bit DACs, four ADCs (including three 16-bit sigma-delta), two rail-to-rail comparators, and integrated capacitive sensing-designed for precision analog signal acquisition in industrial sensor nodes and motor control feedback systems.

For engineers reviewing the STM32F373VBT6 datasheet, STM32F373VBT6 pinout, STM32F373VBT6 application, or STM32F373VBT6 equivalent, key selection considerations include its dual ADC architecture (12-bit SAR + 16-bit SDADC), CAN 2.0B interface, USB 2.0 full-speed support, and 5 V-tolerant I/O capability across 45 pins-critical for mixed-voltage industrial HMI and power conversion monitoring.

Technical Context

The STM32F373VBT6 integrates a single-core Cortex-M4 CPU with hardware floating-point unit and memory protection unit, enabling deterministic real-time control with DSP instruction support. Its analog subsystem combines a 12-bit 1 µs SAR ADC (16 channels) and three independent 16-bit sigma-delta ADCs (up to 21 single-ended inputs), each with dedicated analog supply rails (2.2–3.6 V for SDADC, 2.4–3.6 V for SAR).

Clock management includes four oscillators (4–32 MHz HSE, 32 kHz LSE, 8 MHz HSI with PLL, 40 kHz LSI), supporting precise RTC calibration and low-power Stop/Standby wake-up. Communication peripherals include CAN 2.0B, three USARTs with LIN/IrDA, three SPIs (18 Mbit/s), two Fast Mode Plus I²C interfaces, HDMI-CEC, and USB 2.0 full-speed-enabling robust fieldbus and human-machine interface connectivity.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F373VBT6, the STM32F303VCT6 sacrifices sigma-delta ADC capability for lower cost, while the STM32G474RET6 extends resolution and speed at the expense of software compatibility-making the F373 optimal for established analog-intensive designs requiring drop-in replacement stability.

Availability

STM32F373VBT6 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, medical patient monitoring, and industrial HMI panels requiring stable component supply and long-term production continuity.

Supply support for STM32F373VBT6 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, specializing in microcontrollers, power management, and analog/mixed-signal ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications-designed to unify high-precision signal acquisition, real-time control, and connectivity in a single chip for industrial automation and instrumentation.

FAQ

What is the maximum operating frequency and supported voltage range for the STM32F373VBT6?

The STM32F373VBT6 operates at a maximum CPU frequency of 72 MHz and supports a supply voltage range of 2.0 V to 3.6 V for both digital (VDD) and analog (VDDA) domains. Its internal voltage regulator maintains stable core operation across this range, and the programmable voltage detector (PVD) allows configurable brown-out detection thresholds for graceful shutdown during undervoltage events.

Does the STM32F373VBT6 support hardware cryptographic acceleration?

No, the STM32F373VBT6 does not include dedicated hardware cryptographic accelerators such as AES, SHA, or PKA engines. It relies on software-based cryptography libraries for security functions. For applications requiring hardware-accelerated encryption, ST's STM32L4+, STM32H7, or STM32U5 series-with integrated crypto co-processors-are recommended alternatives.

How many independent ADC modules does the STM32F373VBT6 integrate, and what are their key distinctions?

The STM32F373VBT6 integrates four distinct ADC subsystems: one 12-bit SAR ADC (16 channels, 1 µs conversion) and three independent 16-bit sigma-delta ADCs (collectively supporting up to 21 single-ended or 11 differential inputs). The SAR ADC uses VDDA (2.4–3.6 V) as reference and excels in speed; the SDADCs use separate analog supplies (2.2–3.6 V) and deliver higher resolution for low-bandwidth precision measurements like temperature or strain.

Is the STM32F373VBT6 pin-compatible with other STM32F3-series MCUs in the same LQFP100 package?

Yes, the STM32F373VBT6 shares identical pinout and electrical characteristics with other STM32F373xx variants (e.g., STM32F373VCT6, STM32F373VET6) in LQFP100 packaging. However, it is not pin-compatible with non-F373 members like STM32F303 or STM32F334 due to differences in peripheral mapping, SDADC pin assignments, and TSC channel allocation-even when sharing the same package outline.