AN3324 Datasheet, PDF (1/37 Pages) STMicroelectronics – Implementing power-on self tests

AN3324
Application note
Implementing power-on self tests
for SPC56EL60 in locked step
Introduction
SPC56EL60 is a 32-bit system-on-chip (SoC) automotive microcontroller designed for
safety applications with a focus to minimize software measures within the CPU core
subsystem.
In order to reach this state, several software measures are required during the MCU power-
on start-up procedure. This application note describes the software measures that user
must perform after the boot in order to detect and manage latent faults.
This document is valid only under the assumption that the MCU is used in locked step for
automotive applications with fail-silent or fail-indicate micros.
This application note is based on AN3077 rev. 2 (see B.1: Reference documents).
All the topics covered in this document also refer to RM0032 rev. 5, SPC56EL60L3,
SPC56EL60L5 datasheet rev. 5 and AN3121 rev. 1 (see B.1: Reference documents in
Appendix B).
This application note applies to SPC56EL60 devices according to Table 1.
Table 1.
Device summary
Part number
SPC56EL60L3
SPC56EL60L5
Package
LQFP100 (3.3 V)
LQFP144 (3.3 V)
September 2013
Doc ID 18311 Rev 2
1/37
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