Top

Nonvolatile Controller

Product Details

Key Features

Simplified Block Diagram

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

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

Applications/Uses

Description

The DS1218 Nonvolatile Controller Chip supplies circuitry required to render standard CMOS RAM nonvolatile. VCC is monitored using a precise comparator that detects power-fail and inhibits chip-enable holding a write-protect status until power supplies return to nominal levels. The DS1218 switches active power supplies between VCC and a battery source, whichever is greater. The switch has a voltage drop of less than 0.2V.

Simplified Block Diagram

DS1218: Pin Assignment DS1218: Pin Assignment Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .