Hi Alan
On the LPC55S1x/LPC551x, the Cortex-M33 is augmented with hardware co-processors providing accelerated support for additional DSP algorithms.
The Arm Cortex M33 provides a security foundation, offering isolation to protect valuable IP and data with TrustZone technology. It simplifies the design and software development of digital signal control systems with the integrated digital signal processing (DSP) instructions
LPC55Sxx supports secure boot. please make sure you use LPC55S1x
https://www.nxp.com/docs/en/application-note/AN12283.pdf
CMSIS and Keil are supported.
Have a great day,
Jun Zhang
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