The document is a technical specification for the ST72321 64/44-pin 8-bit MCU, detailing its features and capabilities.
It includes information on the device's memories, clock, reset and supply management, interrupt management, I/O ports, timers, communication interfaces, analog peripheral, instruction set, and development tools.
It also provides a summary of the device's program memory, RAM, operating voltage, temperature range, and package options.
Additionally, the document includes sections on pin description, register and memory map, flash program memory, central processing unit, supply, reset and clock management, interrupts, and power saving modes.