Overview
The ST72F521R9TC is an 8-bit microcontroller from STMicroelectronics, designed for mid-range applications. It is part of the ST7 microcontroller family and features a comprehensive set of peripherals and interfaces, making it suitable for a variety of industrial and automotive applications. The device includes a CAN bus interface, multiple timers, serial communication interfaces, and a 10-bit ADC, among other features.
Key Specifications
| Parameter | Value |
|---|---|
| Program Memory | 60K Flash |
| RAM | 2048 bytes (256 bytes stack) |
| Operating Voltage | 3.8V to 5.5V |
| Temperature Range | -40°C to +125°C |
| Package | TQFP80 14x14, TQFP64 14x14, TQFP64 10x10 |
| Clock Sources | Crystal/ceramic resonator oscillators, internal RC oscillator, bypass for external clock, PLL for 2x frequency multiplication |
| Timers | Main Clock Controller with real-time base, beep, and clock-out; two 16-bit timers; 8-bit PWM Auto-Reload timer |
| Communication Interfaces | SPI, SCI, I2C, CAN (2.0B Passive) |
| ADC | 10-bit ADC with 16 input ports |
| Interrupts | Nested interrupt controller, 14 interrupt vectors plus TRAP and RESET, 15 external interrupt lines |
| I/O Ports | Up to 64 I/O ports, 48 multifunctional bidirectional I/O lines, 34 alternate function lines, 16 high sink outputs |
Key Features
- Nested interrupt controller with 14 interrupt vectors plus TRAP and RESET
- Five timers: Main Clock Controller with real-time base, beep, and clock-out; two 16-bit timers; 8-bit PWM Auto-Reload timer
- Four communication interfaces: SPI, SCI, I2C, and CAN (2.0B Passive)
- 10-bit ADC with 16 input ports
- Enhanced low voltage supervisor (LVD) and auxiliary voltage detector (AVD) with interrupt capability
- Four power saving modes: Halt, Active-Halt, Wait, and Slow
- Up to 64 I/O ports with multifunctional and high sink output capabilities
Applications
The ST72F521R9TC is suitable for various mid-range applications, including:
- Industrial control systems
- Automotive systems, particularly those requiring CAN bus communication
- Consumer electronics requiring multiple interfaces and timers
- Medical devices needing precise timing and communication capabilities
- Other embedded systems that require a robust set of peripherals and low power modes
Q & A
- What is the program memory capacity of the ST72F521R9TC?
The ST72F521R9TC has a program memory capacity of 60K Flash. - What are the operating voltage and temperature ranges for the ST72F521R9TC?
The operating voltage range is 3.8V to 5.5V, and the temperature range is -40°C to +125°C. - What types of timers are available on the ST72F521R9TC?
The device includes a Main Clock Controller with real-time base, beep, and clock-out; two 16-bit timers; and an 8-bit PWM Auto-Reload timer. - What communication interfaces does the ST72F521R9TC support?
The ST72F521R9TC supports SPI, SCI, I2C, and CAN (2.0B Passive) interfaces. - How many I/O ports does the ST72F521R9TC have?
The device has up to 64 I/O ports, including 48 multifunctional bidirectional I/O lines and 16 high sink outputs. - What is the resolution of the ADC on the ST72F521R9TC?
The ADC on the ST72F521R9TC is a 10-bit ADC with 16 input ports. - Does the ST72F521R9TC support low power modes?
Yes, it supports four power saving modes: Halt, Active-Halt, Wait, and Slow. - What is the role of the LVD and AVD in the ST72F521R9TC?
The LVD (Low Voltage Detector) and AVD (Auxiliary Voltage Detector) provide voltage monitoring with interrupt capability. - Can the ST72F521R9TC be programmed in-circuit?
Yes, the device supports In-Application Programming and In-Circuit Programming for HDFlash devices. - What is the endurance and data retention of the HDFlash memory?
The HDFlash memory has an endurance of 100 cycles and data retention of 20 years at 55°C.
