Microcontrollers-nordic
Keywords: nrf-sdk documentation entry point
:: Thingy91 schematic
:: ARM Cortex-M33 datasheet
An introductory landing page at developer.arm.com:
A more specific developer.arm note on Cortex-M33 sleep modes:
^ cerca 2021 Q3
Thingy91_nrf9160 schematics part of zipped archive at https://www.nordicsemi.com/Products/Development-hardware/Nordic-Thingy-91/Download#infotabs.
Preparing to move NordicSemi microcontrollers, SoC and SiP notes to a dedicated wiki page - TMH
2021-09-15
Nordic Semi's Software Development Kit is a large collection of software projects and libraries, with contributions from multiple independent groups. The entry point to Nordic's nrf-sdk is at this link:
While Nordic Semi is more in the market of System on Chip (SoC) and System in Package (Sip) devices they offer a version of ARM Cortex M33, whose specs are detailed here: