topic LPC546xx serial number encoding in LPC Microcontrollers

LPC546xx serial number encoding

klausrenner — Thu, 20 Sep 2018 21:03:10 GMT

There are 32 characters (alpha and numeric) of serial number available to read from the processor. Can any of these characters be ignored? i.e. are some of the characters related to the processor model rather than serial number? We'd like to track devices with less than 32 character numbers if possible, but of course we want to avoid duplicates.

Re: LPC546xx serial number encoding

soledad — Fri, 21 Sep 2018 17:44:01 GMT

Hi,

The Unique Serial Number or UID is a 128-bit value that is unique across parts/families of LPC Microcontrollers, and no two devices/parts will have all the 128 bits same.

Unfortunately, we do not disclose any information regarding the structure of UID and unique/significant bits. If you require less unique bits (e.g. 8, 16, 32 or 64), whatever method you use collisions will be unavoidable.

Have a great day,

Sol

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Re: LPC546xx serial number encoding

klausrenner — Fri, 21 Sep 2018 21:52:48 GMT

Thank you very much. This is exactly what I wanted to know.