The **M3H17FCG-R** is a specific part number belonging to the **M3H Group** of microcontrollers developed by **Toshiba**. This series is part of the **TXZ+™ Family Advanced Class**, based on the ARM® Cortex®-M3 core. --- ## 1. Core Specifications The M3H series is designed for high-precision control in consumer electronics and industrial equipment. | Feature | Specification | | :--- | :--- | | **Core** | ARM® Cortex®-M3 | | **Max Operating Frequency** | 120 MHz | | **Flash Memory** | 128 KB (approximate for this sub-series) | | **RAM** | 16 KB | | **Operating Voltage** | 2.7V to 5.5V (Wide range) | | **Package Type** | LQFP100 (14mm x 14mm, 0.5mm pitch) | --- ## 2. Key Electronic Features ### High-Precision Analog Functions The "H" in M3H signifies high-performance analog integration. * **ADC (Analog-to-Digital Converter):** Typically features a 12-bit ADC with high-speed conversion (approx. 1.5 $\mu s$). * **DAC (Digital-to-Analog Converter):** Includes an 8-bit DAC for signal generation. ### Timer & Control PWM This chip is optimized for motor control and power management: * **T32A:** 32-bit timer event counter. * **Advanced Programmable Motor Control (A-PMD):** Specifically designed to drive 3-phase motors with dead-time insertion. ### Communication Interfaces It supports standard industrial protocols: * **UART:** Universal Asynchronous Receiver-Transmitter. * **I2C:** Inter-Integrated Circuit. * **TSPI:** Toshiba Serial Peripheral Interface (high-speed SPI). --- ## 3. Part Number Decoder Understanding the "M3H17FCG-R" nomenclature: | Code | Meaning | | :--- | :--- | | **M3H** | TXZ+ Family / Cortex-M3 High-speed Analog Group | | **17** | Pin count / Memory density indicator | | **F** | Flash Memory type | | **CG** | Package Code (LQFP100) | | **-R** | Tape and Reel packaging | --- ## 4. Typical Applications Due to its 5V support and robust motor control timers, this part is commonly found in: 1. **Home Appliances:** Washing machines, air conditioners, and refrigerators. 2. **Industrial Equipment:** Small-to-medium scale motor drivers and factory automation sensors. 3. **Power Management:** Digital power supply controllers.