September 2016
DocID029694 Rev 1
1/11
11
TN1239
Technical note
How to change DCF STCU configuration
Introduction
The SPC58 family integrates a dedicated safety module to configure, control and execute
self-test operations. This module is called Self-Test Control Unit (STCU2).
The user can configure the STCU2 in two ways. The first way uses the standard register
access from user application. The second way exploits the Device Configuration Format
(DCF) records.
This document explains the correct procedure to update a STCU configuration which has
been already set by the specific DCF records in UTest memory. It focuses only on the
second way to configure the STCU.
As a prerequisite the reader should be familiar with the functionality of STCU2, DCF, SSCM
and UTest flash. For any details on these topics, refer to the reference manual.
