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BF52X OTP questions

Question asked by DaleR on Jun 10, 2011
Latest reply on Jun 11, 2011 by WassimB

The BF527 has an on-chip charge pump for VPP_OTP.  How is this used?  Does the VPP_OTP pin need to be disconnected from it's connection to 2.5V to use it?  How is the charge pump programmed?

 

I have some boards that have VDD_OTP and VPP_OTP tied to 3.3V. The boards seem to boot and run fine.  Is there a reliability issue with this?  Should I be able to Read (but not write) OTP space?

 

Thanks!

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