DS1218 Datasheet (Maxim Integrated) - Nonvolatile Controller

DS1218, Nonvolatile Controller

VCCI - Input +5 Volt Supply VCCO - RAM Power (VCC) Supply CEI - Chip Enable Input NC - No Connection CEO VBAT GND - Chip Enable Output - + Battery - Ground DESCRIPTION The DS1218 is a CMOS circuit which solves the application problems of converting CMOS RAM into nonvolatile memory.

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DS1218 Features

* Converts CMOS RAM into nonvolatile memories

* Unconditionally write protects when VCC is out of tolerance

* Automatically switches to battery when power fail occurs

* Space saving 8-pin PDIP or 8-pin 150 mil SO Packages

* Consumes less than 100nA of battery current PIN ASSIGNM