AN2021 Datasheet, PDF (1/39 Pages) STMicroelectronics – The ST10F272B and ST10F272E are members of the STMicroelectronics

AN2021
Application note
Porting an application from the ST10F269 to the ST10F272B/E
Introduction
The ST10F272B and ST10F272E are members of the STMicroelectronics ST10 family of
16-bit single-chip CMOS microcontrollers. They are functionally upward compatible with the
ST10F269.
The ST10F272B and the ST10F272E devices differ only in terms of XRAM memory size
and XPeripherals. In this application note, the ST10F272B and ST10F272E will be referred
to as ST10F272 for all aspects that are applicable to both products. For points specific to
each product, the full name with the B or E extension will be used.
The goal of this document is to highlight the differences between ST10F269 and ST10F272
devices. It is intended for hardware or software designers who are adapting an existing
application based on the ST10F269 to the ST10F272.
This document presents the ST10F272’s modified functionalities and the new ones, and
goes on to describe the modified and the new registers. For each part, the differences with
the ST10F269 that may have an impact when replacing the ST10F269 by the ST10F272 are
stressed and some advice is given on the way they can be handled.
September 2013
DocID10728 Rev 3
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