The **STM32F412RGY6TR** is a high-performance microcontroller from STMicroelectronics’ Access Line. It is based on the ARM® Cortex®-M4 32-bit RISC core with a Floating Point Unit (FPU). Below is a detailed breakdown of its electronic specifications and technical architecture. --- ### 1. General Specifications The "RGY6TR" suffix provides specific details about the package, memory density, and packaging style. | Feature | Specification | | :--- | :--- | | **Core** | ARM® Cortex®-M4 with FPU | | **Max Frequency** | 100 MHz | | **Flash Memory** | 1024 KB (1 MB) | | **SRAM** | 256 KB | | **Operating Voltage** | 1.7V to 3.6V | | **Package Type** | WLCSP64 (Wafer Level Chip Scale Package) | | **Pin Count** | 64 Pins | --- ### 2. Core Architecture and Performance The Cortex-M4 core allows the chip to handle complex digital signal processing (DSP) tasks efficiently. * **Adaptive Real-Time Accelerator (ART Accelerator™):** Allows 0-wait state execution from Flash memory at up to 100 MHz. * **DSP Instructions:** Supports Single Instruction Multiple Data (SIMD) and dedicated MAC units. * **FPU:** Single-precision floating-point unit compliant with IEEE 754. --- ### 3. Key Peripheral Interfaces The STM32F412 series is known for its extensive connectivity options, making it ideal for industrial and consumer applications. | Category | Components | | :--- | :--- | | **Timers** | 2x 32-bit timers, 8x 16-bit timers, 2x Watchdog timers | | **Communication** | 4x I2C, 4x USART/UART, 5x SPI, 3x I2S, 2x CAN (2.0B Active) | | **USB** | USB 2.0 OTG Full Speed (Internal PHY) | | **Analog** | 1x 12-bit ADC (up to 16 channels), temperature sensor | | **SDIO** | 1x SDIO interface (supports SD/MMC/eMMC) | --- ### 4. Power Management This specific model is designed for low-power applications. * **Sleep, Stop, and Standby modes:** Reduces power consumption when the CPU is inactive. * **VBAT Supply:** Allows the RTC (Real-Time Clock) and backup registers to remain powered via a coin cell if the main power is lost. * **Voltage Scaling:** The core voltage can be scaled to balance performance and power consumption. --- ### 5. Part Number Breakdown (RGY6TR) Understanding the suffix is critical for PCB design and procurement: * **RG:** 1024 KB Flash memory. * **Y:** WLCSP (Wafer Level Chip Scale Package) — this is an extremely small footprint, meant for space-constrained devices. * **6:** Industrial temperature range (-40°C to +85°C). * **TR:** Tape and Reel (Packaging for automated assembly). --- ### 6. Design Example (Power Pins) When designing a circuit for this chip, the following pin groups are essential: ```c // Schematic Checklist for STM32F412RGY6 VDD / VSS -> Main digital power supply (1.7V - 3.6V) VDDA / VSSA -> Analog supply (Must be equal to VDD) VBAT -> Battery backup for RTC NRST -> Reset pin (Active Low) BOOT0 -> Boot mode selection (Flash vs. System Memory) ```