This document highlights the differences between the ST10F269Zx and ST10F272Z2 devices, which are members of the STMicroelectronics ST10 family of 16-bit single-chip CMOS microcontrollers. It describes the modified and new functionalities and registers of the ST10F272Z2, and provides advice on handling the differences that may impact the replacement of the ST10F269Zx with the ST10F272Z2. It is intended for hardware or software designers adapting existing applications based on the ST10F269Zx to the ST10F272Z2.
The document serves as a guide for hardware or software designers adapting existing applications based on the ST10F269Zx family to the new ST10F272Z2 device. It highlights functional differences, modified features, and new functionalities within the STMicroelectronics ST10 family of 16-bit single-chip CMOS microcontrollers.
Key areas covered include modifications to pinouts (such as XTAL3/XTAL4 usage), expanded XRAM capacity from 10 Kbytes to 18 Kbytes, redesigned A/D converter timing and electrical characteristics, and updates to Flash EEPROM organization. The note also introduces new features like additional peripherals and a programmable divider on CLKOUT.
| Flash size | 256 Kbytes |
|---|---|
| Programming voltage | 5 volts |
| Program / Erase cycles | 100000 cycles |
| XRAM capacity (ST10F272Z2) | 18 Kbytes |
To highlight the differences between ST10F2692x and ST10F2722Z2 devices for designers adapting existing applications.
The ST10F269Zx has 10 Kbytes of extension RAM, whereas the ST10F272Z2 has 18 Kbytes.
In the default configuration, the sample time of the ST10F272Z2 is 2.5 times longer compared to that of the ST10F269Zx.