DESCRIPTION
   The X40626 combines four popular functions, Power-on Reset Control, Watchdog Timer, Dual Supply Voltage Supervision, and Serial EEPROM Memory in one package. This combination lowers system cost, reduces board space requirements, and increases reliability.

FEATURES
• Dual voltage monitoring
   —V2Mon operates independent of VCC
• Watchdog timer with selectable timeout intervals
• Low VCC detection and reset assertion
   —Four standard reset threshold voltages
   —User programmable VTRIP threshold
   —Reset signal valid to VCC=1V
• Low power CMOS
   —20µA max standby current, watchdog on
   —1µA standby current, watchdog OFF
• 64Kbits of EEPROM
   —64 byte page size
• Built-in inadvertent write protection
   —Power-up/power-down protection circuitry
   —Protect 0, 1/4, 1/2, all or 64, 128, 256 or 512
      bytes of EEPROM array with programmable
      Block Lock™ protection
• 400kHz 2-wire interface
   —Slave addressing supports up to 4 devices on
      the same bus
• 2.7V to 5.5V power supply operation
• Available Packages
   —14-lead SOIC
   —14-lead TSSOP