• Part: DS1234
  • Manufacturer: Dallas
  • Size: 71.46 KB
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DS1234 page 2
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DS1234 page 3
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DS1234 Key Features

  • Converts CMOS static RAMs into nonvolatile
  • Software-controlled write inhibit
  • Software-controlled battery disconnect extends
  • Consumes less than 100 nA of battery current
  • Power fail signal can be used to interrupt processor on
  • Low forward voltage drop on the VCC switch
  • Optional 16-pin SOIC surface mount package
  • RAM Supply
  • No Connection
  • Chip Enable Input

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DS1234 Description

VCCO NC RAM Supply No Connection CEI Chip Enable Input WEI Write Enable Input CEO Chip Enable Output to RAM WEO Write Enable Output to RAM GND Ground PF Power Fail Output A0-A3 Address Inputs VBAT VCCI Battery Input +5V Supply DESCRIPTION The DS1234 is a CMOS circuit that converts CMOS RAM into nonvolatile memory and adds two software selectable switches. Ining power is monitored for an out-of-tolerance condition....