AN2021 datasheet(1/39 Pages) STMICROELECTRONICS

Part #	AN2021

Description	The ST10F272B and ST10F272E are members of the STMicroelectronics

PDF	39 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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September 2013

DocID10728 Rev 3

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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.

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