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DS1218 - Nonvolatile Controller

General Description

The DS1218 is a CMOS circuit which solves the application problems of converting CMOS RAM into nonvolatile memory.

Key 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.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
DS1210 Nonvolatile Controller
DS1217M Nonvolatile Read/Write Cartridge
DS1220AB 16k Nonvolatile SRAM
DS1220AD 16k Nonvolatile SRAM
DS1220Y 16k Nonvolatile SRAM
DS1225AB 64k Nonvolatile SRAM
DS1225AD 64k Nonvolatile SRAM
DS1225Y 64k Nonvolatile SRAM
DS1243Y 64K NV SRAM
DS1244 256K NV SRAM

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-6295; Rev 6/12 DS1218 Nonvolatile Controller 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 ASSIGNMENT VCCO NC NC GND 1 2 3 4 8 VCCI 7 VBAT 6 CEO 5 CEI PIN DESCRIPTION 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. Incoming power is monitored for an out-of-tolerance condition.