The **M3H45FCD-R** belongs to the **M3H Group** of microcontrollers within the **TXZ+™ Family Advanced Class**, manufactured by **Toshiba**. These microcontrollers are based on the ARM® Cortex®-M3 core and are designed for high-speed data processing and motor control applications. Below is a detailed breakdown of its electronic specifications and features. --- ### 1. Core Architecture and Performance The device utilizes a 32-bit RISC architecture optimized for efficiency and real-time responsiveness. | Feature | Specification | | :--- | :--- | | **Core** | ARM® Cortex®-M3 | | **Maximum Frequency** | Up to 120 MHz | | **Operating Voltage** | 2.7V to 5.5V (Single supply) | | **Instruction Cache** | Included for high-speed execution | --- ### 2. Memory Configuration The "45" in the part number typically refers to the memory density within the Toshiba naming convention. * **Flash Memory (Code):** 512 KB (Used for program storage). * **Flash Memory (Data):** 32 KB (Dedicated for data storage/EEPROM emulation). * **RAM:** 66 KB (Includes parity bit for functional safety). --- ### 3. Key Peripheral Modules The M3H45FCD-R is heavily oriented toward **Industrial Automation** and **Home Appliances**. #### A. Analog Components * **12-bit ADC:** High-speed Analog-to-Digital converter (approx. 1.0 $\mu$s conversion time). * **8-bit DAC:** 2-channel Digital-to-Analog converter. #### B. Motor Control (Advanced Programmable Motor Control - A-PMD) * Equipped with a 3-phase PWM output timer. * Supports dead-time insertion and emergency brake input, making it ideal for controlling brushless DC (BLDC) motors. #### C. Communication Interfaces * **UART/SIO:** Multiple channels for serial communication. * **I2C / EI2C:** Support for standard and fast modes. * **TSPI:** Toshiba Serial Peripheral Interface (High-speed SPI). --- ### 4. Package and Physical Characteristics The **FCD-R** suffix denotes the specific physical packaging. * **Package Type:** LQFP100 (Low-profile Quad Flat Package). * **Pin Count:** 100 pins. * **Lead Pitch:** 0.50 mm. * **Operating Temperature:** -40°C to +85°C. --- ### 5. Functional Safety Features To comply with industrial safety standards (like IEC 60730), the chip includes: 1. **RAM Parity:** Detects memory corruption. 2. **Clock Monitoring:** Detects if the oscillator stops or malfunctions. 3. **CRC Calculation Circuit:** Ensures data integrity during transmission or storage.