STMicroelectronics STM32F373R8T6TR

Overview

STM32F373R8T6TR 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 for human-machine interface applications in industrial control and sensor signal conditioning.

For engineers reviewing the STM32F373R8T6TR datasheet, STM32F373R8T6TR pinout, STM32F373R8T6TR application, or STM32F373R8T6TR equivalent, key selection criteria include its dual ADC architecture (12-bit SAR + 16-bit Sigma-Delta), CAN 2.0B interface, USB 2.0 full-speed support, and 5 V-tolerant I/O capability across 45 pins - critical for mixed-voltage system integration and precision analog front-end design.

Technical Context

The STM32F373R8T6TR integrates a single-core ARM Cortex-M4 with hardware floating-point unit and memory protection unit, enabling deterministic real-time signal processing and secure memory partitioning. Its analog subsystem combines a high-speed 12-bit SAR ADC (1 µs conversion) with three independent 16-bit sigma-delta ADCs supporting up to 21 single-ended channels - optimized for simultaneous high-resolution current/voltage and low-noise sensor measurements.

Clock management includes dual oscillators (4–32 MHz HSE and 32 kHz LSE), internal 8 MHz RC with PLL, and 40 kHz LSI, supporting precise RTC operation and low-power Stop/Standby wake-up. Peripheral routing leverages flexible alternate function mapping across 84 GPIOs, with 45 pins rated for 5 V tolerance and full remapping of timer, ADC, DAC, and communication peripheral signals.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm) 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 STM32F303RCT6 and STM32G474RET6, the STM32F373R8T6TR uniquely balances sigma-delta ADC density, capacitive sensing integration, and industrial-grade peripherals in LQFP64 - making it optimal for cost-sensitive, analog-intensive edge nodes where 16-bit metrology and touch coexist.

Availability

STM32F373R8T6TR is available at Aetrix Electronics and suitable for industrial motor drives, smart energy meters, portable medical sensors, and capacitive HMI panels requiring stable component supply and long-term manufacturability.

Supply support for STM32F373R8T6TR 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 management ICs, MEMS sensors, and automotive semiconductors since 1987.

The STM32F3-series targets analog-intensive embedded applications, combining high-precision mixed-signal peripherals with Cortex-M4 performance - specifically engineered for industrial automation, digital power conversion, and human-interface systems.

FAQ

What is the maximum operating frequency and supported voltage range for the STM32F373R8T6TR?

The STM32F373R8T6TR operates at up to 72 MHz using its internal PLL and supports a supply voltage range of 2.0 V to 3.6 V for VDD/VDDA. Its analog domain (VDDA) must be ≥2.2 V for sigma-delta ADC operation and ≥2.4 V for the 12-bit SAR ADC. The device guarantees full specification compliance across –40°C to +85°C ambient temperature.

Does the STM32F373R8T6TR support USB device functionality without external components?

Yes - the STM32F373R8T6TR integrates a full-speed USB 2.0 transceiver compliant with USB Specification Rev 2.0. It requires only external 1.5 kΩ pull-up resistor on D+ and standard ESD protection diodes. No external PHY or crystal is needed, as the USB clock is derived from the internal PLL with dedicated trimming for ±0.25% accuracy.

How many analog inputs can be simultaneously sampled using the sigma-delta ADCs?

The STM32F373R8T6TR features three independent 16-bit sigma-delta ADCs (SDADC1–SDADC3), each supporting up to 11 differential or 21 single-ended channels. While true simultaneous sampling across all three SDADCs is not supported, they can be triggered synchronously via hardware events (e.g., timer update), achieving phase-matched acquisition across up to 21 channels with <100 ns skew.

Is the STM32F373R8T6TR pin-compatible with other STM32F373 variants in the same package?

Yes - all STM32F373xx devices in LQFP64 (e.g., STM32F373R8, STM32F373CB, STM32F373CC) share identical pinouts and electrical characteristics. Differences are limited to Flash size (64 KB vs. 128 KB vs. 256 KB) and SRAM configuration, allowing seamless migration within the same footprint during design iteration or product tiering.