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CAT93CXX serial EEPROM design guidelines for power up and power down operation

Posted: 28 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:CAT93CXX application note? EEPROM? unpredictable operations?

Operating within the Catalyst Semi's CAT93Cxx data sheet specification limits will prevent unpredictable operation of Microwire Serial EEPROMs. Absolute Maximum Ratings should be observed:

�Voltage on any pin with respect to ground: -2V to Vcc +2V. The minimum DC input voltage is -0.5V. During transitions, inputs may overshoot to -2V for periods of less than 20ns. Maximum DC voltage on output pins is Vcc +0.5V, which may overshoot to Vcc +2V for periods of less than 20ns.?

Fault conditions usually occur during a power-up/power-down sequence when Vcc and the input signal can be erratic or have different slew rates. In this application note, Denisa Stefan discusses the simple rules on avoiding unpredictable operation during power up/down.

View the PDF document for more information.





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