Chip_IAP_ReadUID

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Chip_IAP_ReadUID

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chucktian
Contributor I

I am working on LPC54114. I tried to use Chip_IAP_ReadUID to get a unique ID for USB detection. However, I only got {0, 65535, 0, 0} from the result. I assume it should be a unique random number from manufacture process. BTW, Chip_IAP_ReadPID works fine for me. So it doesn't make sense why ReadUID is not working. Anyone can help? Thanks a lot.

2 Replies

606 Views
ckphua
NXP Employee
NXP Employee

This is a known issue and documented in the LPC5411x Errata sheet.

Here's the workaround:-

The unique serial number (four 32-bit words) can be directly read from address locations

0x0100 0100 to 0x0100 010C

606 Views
jeremyzhou
NXP TechSupport
NXP TechSupport

Hi Chuck Tian,

Thank you for your interest in NXP Semiconductor products and 
the opportunity to serve you.
I was wondering if you can share the demo, and then I can replicate the issue on LPCXpresso LPC54114.
Have a great day,

TIC

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