## STM32F412RGT3TR: Technical Overview The **STM32F412RGT3TR** is a high-performance microcontroller from STMicroelectronics’ Access Line of the STM32F4 series. It is based on the **ARM® Cortex®-M4** 32-bit RISC core with a Floating Point Unit (FPU). --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Core** | ARM® Cortex®-M4 with FPU | | **Max CPU Frequency** | 100 MHz | | **Flash Memory** | 1024 KB (1 MB) | | **SRAM** | 256 KB | | **Operating Voltage** | 1.7V to 3.6V | | **Package / Case** | LQFP-64 (10x10 mm) | | **I/O Pins** | 50 | | **ADC** | 1x 12-bit (16 channels) | | **Operating Temp** | -40°C to +105°C | --- ### 2. Core Functional Blocks #### Processing Power * **Adaptive Real-Time (ART) Accelerator:** Allows 0-wait state execution from Flash memory at up to 100 MHz. * **DSP Instructions:** Includes a full set of DSP instructions and a Memory Protection Unit (MPU) to enhance application security. #### Connectivity & Peripherals The STM32F412 is known for its extensive connectivity options, making it suitable for industrial and consumer applications: * **Communication Interfaces:** 4x USARTs, 3x I2C, 5x SPI, and 2x CAN (2.0B Active). * **USB Support:** USB 2.0 full-speed device/host/OTG controller with on-chip PHY. * **SDIO:** Interface for SD cards, eMMCs, and MMC cards. * **Parallel Interface:** 8- to 14-bit parallel camera interface. #### Power Management * **Low-Power Modes:** Includes Sleep, Stop, and Standby modes. * **VBAT Supply:** Allows for a backup battery to power the RTC (Real-Time Clock) and 32x32-bit backup registers. --- ### 3. Part Number Decoder Understanding the suffix of **STM32F412RGT3TR**: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **STM32** | Family | 32-bit Microcontroller | | **F412** | Line | Access Line, High Performance | | **R** | Pin Count | 64 Pins | | **G** | Flash Size | 1024 KB | | **T** | Package | LQFP | | **3** | Temp Range | -40°C to +105°C | | **TR** | Packing | Tape and Reel | --- ### 4. Typical Application Example (C Snippet) To initialize a GPIO pin for a simple LED toggle on this chip using the HAL library: ```c void MX_GPIO_Init(void) { GPIO_InitTypeDef GPIO_InitStruct = {0}; /* Enable GPIO Port Clock */ __HAL_RCC_GPIOA_CLK_ENABLE(); /* Configure GPIO pin : PA5 (User LED) */ GPIO_InitStruct.Pin = GPIO_PIN_5; GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP; GPIO_InitStruct.Pull = GPIO_NOPULL; GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW; HAL_GPIO_Init(GPIOA, &GPIO_InitStruct); } ```