The document is a technical specification for the ST72321Bxxx-Auto, an 8-bit MCU designed for automotive use.
It features 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, and I2C interface.
The device has various power saving modes and interrupt management capabilities.
It also includes development tools and is available in different package options.
The document provides detailed information on the device's features, memories, clock, reset and supply management, interrupt management, analog peripherals, timers, communication interfaces, and development tools.
It also includes information on the device's pinout, register and memory map, flash program memory, central processing unit, supply, reset and clock management, interrupts, and power saving modes.