STMicroelectronics STM32F373RCT6

Overview

STM32F373RCT6 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, four 12-/16-bit ADCs (including three sigma-delta), three 12-bit DACs, two rail-to-rail comparators, and integrated capacitive sensing-used in industrial sensor fusion and precision analog front-end control systems.

For engineers reviewing the STM32F373RCT6 datasheet, STM32F373RCT6 pinout, STM32F373RCT6 application, or STM32F373RCT6 equivalent, key selection criteria include its dual ADC architecture (SAR + Sigma-Delta), USB 2.0 FS + CAN 2.0B interface coexistence, 5 V-tolerant I/O capability on 45 pins, and RTC with periodic wakeup from Stop/Standby modes.

Technical Context

The STM32F373RCT6 integrates an ARM Cortex-M4 core with hardware floating-point unit and memory protection unit, enabling deterministic real-time signal processing for mixed-signal applications. Its analog subsystem combines a 12-bit SAR ADC (1 µs conversion, 16-channel) with three independent 16-bit sigma-delta ADCs (up to 21 single-ended channels), each with dedicated analog supply rails (2.2–3.6 V).

Clock management includes dual oscillators (4–32 MHz HSE + 32 kHz LSE), internal 8 MHz RC with x16 PLL, and 40 kHz LSI-supporting precise timing for RTC, low-power modes, and synchronous peripheral operation. Communication interfaces include full-speed USB 2.0, CAN 2.0B, three USARTs with LIN/IrDA support, and three SPIs with I2S multiplexing.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm) package with exposed thermal pad; 64-pin quad flat pack suitable for automated PCB assembly and thermal management in compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F303RCT6, the STM32F373RCT6 adds sigma-delta ADCs and TSC for sensor-rich applications; versus STM32G474RET6, it trades newer digital peripherals for legacy-compatible analog precision-making it optimal for upgrade paths from F303-based designs requiring enhanced metrology.

Availability

STM32F373RCT6 is available at Aetrix Electronics and suitable for industrial sensor hubs, motor control interfaces, medical diagnostic front-ends, and smart energy metering requiring stable component supply across extended product lifecycles.

Supply support for STM32F373RCT6 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, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-intensive embedded applications-emphasizing high-resolution data acquisition, real-time control, and low-power operation in space-constrained industrial modules.

FAQ

What is the maximum operating frequency of the STM32F373RCT6?

The STM32F373RCT6 operates at a maximum CPU frequency of 72 MHz, achieved using the internal 8 MHz RC oscillator with x16 PLL or an external 4–32 MHz crystal. This frequency is sustained across the full industrial temperature range (–40°C to +85°C) under 2.0–3.6 V supply conditions, with all peripherals fully functional and timing specifications guaranteed per datasheet Table 6.3.3.

Does the STM32F373RCT6 support USB device functionality without external components?

Yes-the STM32F373RCT6 integrates a full-speed USB 2.0 device transceiver with internal pull-up resistors and differential termination. Only a single 1.5 kΩ pull-up resistor on D+ (required by USB specification) and proper PCB layout for the DP/DM traces are needed; no external PHY or level shifters are required for standard USB device operation.

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

The STM32F373RCT6 supports simultaneous sampling across its 12-bit SAR ADC and three 16-bit sigma-delta ADCs, but not in true hardware lock-step. The SAR ADC can sample up to 16 channels sequentially at 1 MSPS, while each SDADC operates independently-enabling concurrent acquisition of up to 21 single-ended or 11 differential analog signals across separate analog domains (VDDA and VREF+).

Is the STM32F373RCT6 pin-compatible with other STM32F373 variants?

Yes-the STM32F373RCT6 in LQFP64 is pin-compatible with other R-series members (e.g., STM32F373R8, STM32F373RB) sharing the same package. Differences lie in Flash size (64–256 KB) and feature enablement (e.g., TSC channel count), but pin functions, power domains, and peripheral mappings remain identical across the R64 footprint.