STMicroelectronics STM32F412CGU6TR

Overview

STM32F412CGU6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, 1 MB Flash, 256 KB SRAM, USB OTG FS, dual CAN 2.0B, and 17 communication interfaces. It operates up to 100 MHz, delivers 125 DMIPS, and supports BAM for low-power sensor hub applications in wearable devices and connected objects.

For engineers reviewing the STM32F412CGU6TR datasheet, STM32F412CGU6TR pinout, STM32F412CGU6TR application, or STM32F412CGU6TR equivalent, key selection criteria include its 100 MHz Cortex-M4+FPU core, dual CAN support, 17-timer set (including two 32-bit timers), 12-bit 2.4 MSPS ADC, and UFQFPN48 package with 109 fast I/Os at 100 MHz.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from Flash at 100 MHz, and Batch Acquisition Mode (BAM) for efficient peripheral-triggered data capture without CPU intervention. Its memory subsystem includes flexible static memory controller (FSMC) supporting SRAM, PSRAM, and NOR, plus dual-mode Quad-SPI for external flash expansion.

Power architecture features three low-power modes - Stop (50 µA typical), Standby (2.4 µA), and VBAT RTC operation (1 µA) - with independent voltage regulator control and calibrated internal oscillators (16 MHz HSI, 32 kHz LSE/LSI). Debug uses SWD/JTAG with Embedded Trace Macrocell™.

Key Specifications

Pinout & Package

STM32F412CGU6TR is housed in a 7×7 mm UFQFPN48 package (ECOPACK2-compliant) with exposed thermal pad. Pin count is 48; all pins are 5V-tolerant except BOOT0 and NRST.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F411CEU6 and STM32F446RET6, the STM32F412CGU6TR uniquely combines BAM-driven ultra-low-power sensor acquisition, dual CAN for industrial networking, and integrated DFSDM for PDM microphone processing - making it optimal for battery-powered connected objects requiring both real-time responsiveness and extended runtime.

Availability

STM32F412CGU6TR is available at Aetrix Electronics and suitable for industrial PLC modules, wearable sensor hubs, and connected home audio devices requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F412CGU6TR 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F412xG series targets resource-constrained, battery-aware embedded systems requiring rich connectivity (dual CAN, USB OTG, multiple UARTs), low-power sensing (BAM, DFSDM), and deterministic real-time performance (ART Accelerator, 100 MHz M4+FPU).

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F412CGU6TR achieves 100 MHz maximum CPU frequency using its Arm Cortex-M4 core with FPU and the ART Accelerator™, which eliminates Flash wait states via prefetch and branch prediction. This allows deterministic real-time execution of complex algorithms such as motor FOC or audio filtering directly from Flash memory without external cache or RAM shadowing.

Does this MCU support true hardware crypto acceleration?

No, the STM32F412CGU6TR does not include dedicated cryptographic accelerators (e.g., AES, SHA, PKA). It relies on software libraries for encryption; however, its true random number generator (RNG) and 96-bit unique ID provide foundational security primitives for key derivation and device authentication in constrained environments.

Can the USB OTG FS interface operate in host mode without external components?

Yes - the integrated USB OTG FS PHY supports both device and host modes with no external transceiver required. In host mode, it drives standard USB 2.0 full-speed peripherals (e.g., HID, mass storage) using internal VBUS sensing and current limiting, though external VBUS power switch and overcurrent protection remain recommended for robust designs.

What is the purpose of the VCAP_1 and VCAP_2 pins, and what capacitor values are required?

VCAP_1 and VCAP_2 connect to the internal 1.2 V voltage regulator's stabilization nodes. Each must be decoupled with a 2.2 µF ±10% X7R ceramic capacitor placed within 5 mm of the pin and referenced to VSS. Failure to meet this requirement risks core voltage instability, leading to unpredictable resets or Flash corruption during high-frequency operation.