8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE The **ST72F521R9T3** is a microcontroller from **STMicroelectronics**. Here are its key specifications, descriptions, and features:

### **Manufacturer:**  
**STMicroelectronics**  

### **Specifications:**  
- **Core:** ST7 8-bit microcontroller  
- **CPU Speed:** Up to **8 MHz**  
- **Program Memory (Flash):** **8 KB**  
- **RAM:** **384 bytes**  
- **EEPROM:** **256 bytes**  
- **Operating Voltage:** **3.0V to 5.5V**  
- **Package:** **LQFP-32**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Timers:**  
  - 16-bit timer with **PWM**  
  - 8-bit timer with **PWM**  
  - Watchdog timer  
- **Communication Interfaces:**  
  - **SPI**  
  - **I²C**  
  - **UART**  
- **ADC:** **10-bit, 8-channel**  
- **GPIO Pins:** **Up to 27 I/O pins**  
- **Interrupts:** Multiple interrupt sources  

### **Descriptions & Features:**  
- **Low-power modes:** Supports **Halt, Active-Halt, and Wait** modes for power efficiency.  
- **Robust peripherals:** Includes **PWM, ADC, and communication interfaces** for embedded applications.  
- **Industrial-grade:** Designed for **automotive and industrial applications**.  
- **On-chip debugging:** Supports **single-wire interface module (SWIM)** for debugging.  
- **High noise immunity:** Suitable for **harsh environments**.  

This microcontroller is commonly used in **automotive systems, industrial controls, and consumer electronics**.  

Would you like additional details on any specific feature?

8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE