STMicroelectronics STM32F373C8T6

Overview

STM32F373C8T6 from STMicroelectronics is a 32-bit ARM® Cortex®-M4 microcontroller with FPU and MPU, operating up to 72 MHz, featuring 64 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 and real-time control in industrial sensor nodes and motor feedback systems.

For engineers reviewing the STM32F373C8T6 datasheet, STM32F373C8T6 pinout, STM32F373C8T6 application, or STM32F373C8T6 equivalent, key selection considerations include its dual ADC architecture (12-bit SAR + 16-bit SDADC), CAN 2.0B interface, USB 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 device integrates a single-core Cortex-M4 with hardware floating-point unit and memory protection unit, enabling deterministic real-time execution of DSP-intensive algorithms such as motor FOC or active filter control. Its clock system combines 4–32 MHz external crystal, 32 kHz RTC oscillator, and internal 8 MHz RC with x16 PLL for flexible timing configuration.

Analog subsystems operate with independent supply domains: VDDA (2.4–3.6 V) for the 12-bit SAR ADC and VREFINT, while SDADCs use separate VDDA2 (2.2–3.6 V), allowing simultaneous high-resolution current/voltage measurement and low-noise sigma-delta sensing-e.g., shunt-based phase current + isolated DC bus voltage in inverters.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm) package with exposed thermal pad; 64-pin quad flat pack optimized for manual soldering and automated assembly in space-constrained industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F373C8T6, STM32F303C8T6 sacrifices sigma-delta precision for lower cost and simpler toolchain support, while STM32G474RET6 trades SDADC depth for higher CPU throughput and op-amp flexibility-making the F373 optimal where ultra-high-resolution analog capture coexists with real-time control.

Availability

STM32F373C8T6 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, medical sensor hubs, and automotive body control modules requiring stable component supply and long-term production continuity.

Supply support for STM32F373C8T6 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, delivering silicon solutions for automotive, industrial, and consumer markets since 1987.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications-designed to unify high-precision signal acquisition, real-time control, and connectivity in a single Cortex-M4 device for industrial automation and instrumentation.

FAQ

What is the maximum operating frequency and core type of the STM32F373C8T6?

The STM32F373C8T6 features an ARM Cortex-M4 core with hardware FPU and MPU, running at a maximum frequency of 72 MHz. It achieves 1.25 DMIPS/MHz (Dhrystone 2.1), supporting real-time DSP operations including FFT, filtering, and motor control algorithms without external coprocessors.

Does the STM32F373C8T6 support USB device functionality without external components?

Yes-the device integrates a full-speed USB 2.0 transceiver with internal pull-up resistors on PA11/PA12. No external PHY, termination resistors, or pull-ups are required for standard USB device operation, reducing BOM count and PCB area in portable or embedded host-connected applications.

How many analog-to-digital converters does the STM32F373C8T6 include, and what are their key distinctions?

It includes four ADC subsystems: one 12-bit SAR ADC (16 channels, 1 µs conversion) and three independent 16-bit sigma-delta ADCs (up to 21 single-ended channels). The SAR ADC targets fast transient capture (e.g., PWM-synchronized current sampling), while SDADCs deliver high-resolution, low-noise measurements ideal for energy metering and precision sensor interfaces.

Is the STM32F373C8T6 pin-compatible with other STM32F3 devices in the same package?

No-while sharing the LQFP64 footprint, pin functions differ significantly across the F3 series. For example, SDADC inputs, TSC channels, and specific timer/ADC mappings are unique to the F373 family. Migration requires schematic and firmware validation; direct replacement with F303 or F334 variants is not electrically or functionally compatible.