This application note provides information on using ST72F321B, ST72F324B and ST72F325 microcontroller devices in applications originally designed for the ST72F324 and ST72F321 series.
This document serves as a migration guide for engineers moving from the original ST72F324 and ST72F321 microcontroller series to their enhanced successors: the ST72F324B, ST72F321B, and ST72F325. It details feature compatibility across package types, memory sizes, and peripherals such as timers, ADCs, and I2C.
| Operating Supply Voltage | 3.8 V to 5.5V |
|---|---|
| Register Map Size | 128 bytes |
Use ST72F325 if your application requires CSS (Clock Security System).
No, Murata 16 MHz 3rd overtone oscillators are not recommended for ST72F324B (32k Flash), ST72F321B and ST72F325.