ST72521M/R/AR is an 8-bit MCU with nested interrupts, FLASH, 10-bit ADC, five timers, SPI, SCI, I2C, CAN interface.
The document provides a comprehensive technical overview of the ST72521M/R/AR series of 8-bit microcontrollers. Key features include up to 60K bytes of High Density Flash memory, 1K to 2K RAM, and support for multiple power-saving modes such as Halt, Active-Halt, Wait, and Slow.
The manual covers the central processing unit architecture, supply and clock management systems, and a nested interrupt controller with up to 64 I/O ports. It also details five timers, four communication interfaces (SPI, SCI, I2C, CAN), and a 10-bit ADC peripheral.
| Program Memory Size | 32K to 60K bytes |
|---|---|
| RAM Size | 1K to 2K bytes |
| Operating Voltage | 3.8V to 5.5V |
| Temperature Range (ROM) | -40°C to +125°C |
| Number of Timers | Five |
| ADC Resolution | 10-bit |
The device is available in TQFP80, TQFP64 (M and R variants), and a 10x10 AR package.
Yes, HDFlash devices support both In-Application Programming and In-Circuit Programming.
The device features 14 interrupt vectors plus TRAP and RESET.