Based on similar technical terms, your request could refer to one of the following topics:
: The most likely target if "CM" stands for Compute Module . Official datasheets for the Compute Module 4 and the newer Compute Module 5 Download Raspberry PiCM22nd21 pdf
: If the "21" refers to the release year 2021, you might be looking for the , which was published in January 2021 . Based on similar technical terms, your request could
: The numbers "22" and "21" sometimes appear in mechanical specifications, such as the 51x21mm PCB dimensions for the Raspberry Pi Pico . are available through the Raspberry Pi Product Information
are available through the Raspberry Pi Product Information Portal. Raspberry Pi Pico Go to product viewer dialog for this item.
Could you please clarify if you are looking for a specific datasheet, or perhaps a document related to the microcontroller released in 2021 ?
The identifier does not appear to match any standard official Raspberry Pi product. It is likely a misspelling or a specific internal reference from a third-party document.