DESCRIPTION
●These devices combine four popular functions, Power on Reset Control, Watchdog Timer, Supply Voltage
●Supervision, and Block Lock Protect Serial EEPROM Memory in one package. This combination lowers
●system cost, reduces board space requirements, and increases reliability.
●FEATURES
●• Selectable time out watchdog timer
●•Low VCCdetection and reset assertion
●—Five standard reset threshold voltages
●—Re-program low VCCreset threshold voltage using special programming sequence.
●—Reset signal valid to VCC= 1V
●• Long battery life with low power consumption
●—<50µA max standby current, watchdog on
●—<10µA max standby current, watchdog off
●—<2mA max active current during read
●• 2.7V to 5.5V and 4.5V to 5.5V power supply versions
●• 4Kbits of EEPROM–1M write cycle endurance
●• Save critical data with Block Lock™ memory
●—Protect 1/4, 1/2, all or none of EEPROM array
●• Built-in inadvertent write protection
●—Write enable latch
●—Write protect pin
●• 3.3MHz clock rate
●• Minimize programming time
●—16-byte page write mode
●—Self-timed write cycle
●—5ms write cycle time (typical)
●• SPI modes (0,0 & 1,1)
●• Available packages
●—8-lead MSOP, 8-lead SOIC, 8-pin PDIP
●—14-lead TSSOP
