STMicroelectronics STM32F378RCY6TR

Overview

STM32F378RCY6TR from STMicroelectronics is a 32-bit ARM® Cortex®-M4 microcontroller with FPU and MPU, operating at up to 72 MHz, featuring 256 KB Flash, 32 KB SRAM with hardware parity, three 12-bit DACs, four ADCs (including three 16-bit sigma-delta), and two rail-to-rail comparators - deployed in industrial sensor signal conditioning and precision analog front-end control systems.

For engineers reviewing the STM32F378RCY6TR datasheet, STM32F378RCY6TR pinout, STM32F378RCY6TR application, or STM32F378RCY6TR equivalent, key selection considerations include its dual ADC architecture (12-bit SAR + 16-bit SDADC), 1.8 V core supply tolerance, CAN 2.0B interface, capacitive touch sensing support, and UFBGA100 package with 100 I/Os including 45 5 V-tolerant pins.

Technical Context

The device integrates a single-core Cortex-M4 with hardware floating-point unit and memory protection unit, enabling deterministic real-time control with DSP extensions for filtering and sensor fusion. Its analog subsystem combines a high-speed 12-bit SAR ADC (1 µs conversion) and three independent 16-bit sigma-delta ADCs - each with dedicated analog supplies (2.2–3.6 V) and up to 21 single-ended channels - supporting simultaneous multi-sensor acquisition.

Clock management includes four oscillators (4–32 MHz HSE, 32 kHz LSE, 8 MHz HSI with PLL, 40 kHz LSI), enabling precise RTC calibration and low-power Stop-mode wakeup. Peripheral routing is managed via flexible GPIO alternate function mapping across seven ports (PA–PF), with DMA-driven data movement between ADCs, DACs, and memory.

Key Specifications

Pinout & Package

STM32F378RCY6TR is housed in a 100-ball UFBGA package (7 × 7 mm, 0.5 mm pitch) with 84 user-accessible I/Os - 45 of which are 5 V tolerant. The package supports fine-pitch PCB assembly and thermal performance suitable for compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F378RCY6TR, STM32F303RCT6 omits sigma-delta conversion entirely, limiting precision analog use cases, while STM32G474RET6 trades SDADC depth for higher clock speed and USB-C - making the F378 uniquely balanced for metrology-grade analog integration at 72 MHz.

Availability

STM32F378RCY6TR is available at Aetrix Electronics and suitable for industrial sensor hubs, smart energy meters, motor control front-ends, and medical diagnostic modules requiring stable component supply and long-term production continuity.

Supply support for STM32F378RCY6TR 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F3 series targets cost-sensitive, analog-rich embedded applications - combining high-resolution sigma-delta converters, op-amps, and comparators with Cortex-M4 performance for sensor signal conditioning and real-time control.

FAQ

What is the maximum operating frequency and core architecture of STM32F378RCY6TR?

The STM32F378RCY6TR 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), supports single-cycle multiplication and hardware division, and includes DSP instruction extensions - enabling efficient execution of filtering, FFT, and control algorithms in real time.

Does STM32F378RCY6TR support 5 V tolerant I/Os, and how many are available?

Yes, STM32F378RCY6TR supports 5 V tolerant I/Os on up to 45 pins across GPIO ports A through F. This capability allows direct interfacing with legacy 5 V peripherals and sensors without external level shifters - confirmed in Section 3.9 (GPIOs) and Table 50 (I/O static characteristics) of the official datasheet.

What analog peripherals are integrated, and what are their key resolution and speed specs?

The device integrates one 12-bit SAR ADC (16 channels, 1 µs conversion time), three 16-bit sigma-delta ADCs (up to 21 single-ended channels), three 12-bit DACs, and two rail-to-rail comparators. SDADCs operate with 2.2–3.6 V analog supply and support programmable oversampling for >90 dB SNR; DACs are synchronized to basic timers for precise waveform generation.

Is STM32F378RCY6TR pin-compatible with other STM32F3 packages, and what is its package footprint?

No, STM32F378RCY6TR uses a UFBGA100 package (7 × 7 mm, 0.5 mm ball pitch), distinct from LQFP64/LQFP100 variants in the same family. Pin mapping differs significantly due to ball-grid layout and I/O allocation - verified in Section 4 (Pinouts) and Table 11 (pin definitions) of the datasheet. PCB redesign is required for migration from QFP packages.