APPLICATION NOTE 94

Using the Secure Microcontroller with EPROM/ROM

By: Kevin Self

Abstract: A designer using the DS5000FP or DS5001FP soft microcontroller may opt to use an EPROM instead of a NV RAM. This application note describes the design precautions when using a non-battery backed approach. Certain pins on the device will require special attention for the power-fail interrupt and power-fail reset to work properly. Problems may arise with memory interface signals when powered off in data retention mode.