FS23
NXP
This application note is intended for the engineers involved in software implementation of FS23 fail-safe system basis chips.
Application NoteNxp
NXP AN14041: FS23 Fail-Safe System Basis Chip (SBC) Quick Start Guide
Quick start guide for NXP FS23 fail-safe SBCs, covering initialization, SPI/I2C communication, watchdog configuration, and start-up sequences for automotive ECUs.
Overview
This application note provides technical guidance for software engineers implementing NXP FS23 series fail-safe system basis chips, including the FS2300 and FS2320. The document details the implementation of SPI and I2C communication protocols and provides a comprehensive initialization flow chart. Key topics include managing the 256 ms INIT window, performing Analog Built-In Self-Tests (ABIST) for ASIL B compliance, configuring watchdog parameters, and executing start-up sequences. It also includes detailed register mapping for main and fail-safe logic to support software driver development for automotive electronic control units (ECUs).
Use Cases
- Software driver development for FS23 SBCs
- Automotive ECU system design
- Safety-critical system initialization
- Implementing power-up sequences for S32K-based applications
- ASIL B compliant safety system development
Topics
NXP
FS23
FS2300
FS2320
SBC
system basis chip
fail-safe
S32K
SPI
I2C
CAN FD
LIN
Referenced Parts
FS2300
NXP
Keywords FS2300, FS2320, safety system basis chip, SBC
FS2320
NXP
Keywords FS2300, FS2320, safety system basis chip, SBC
S32K
NXP
The flexibility of the FS23 SBC makes it suitable for S32K processor-based applications
| FS23 | NXP | This application note is intended for the engineers involved in software implementation of FS23 fail-safe system basis chips. |
| FS2300 | NXP | Keywords FS2300, FS2320, safety system basis chip, SBC |
| FS2320 | NXP | Keywords FS2300, FS2320, safety system basis chip, SBC |
| S32K | NXP | The flexibility of the FS23 SBC makes it suitable for S32K processor-based applications |