Features

• Selectable watchdog timer

• Low VCC detection and reset assertion - Five standard reset threshold voltages - Re-program low VCC reset threshold voltage using special programming sequence - Reset signal valid to VCC = 1V

• Determine watchdog or low voltage reset with a volatile flag bit

• Long battery life with low power consumption - <50µA max standby current, watchdog on - <1µA max standby current, watchdog off - <400µA max active current during read

• 32kbits of EEPROM

• Built-in inadvertent write protection - Power-up/power-down protection circuitry - Protect 0, 1/4, 1/2 or all of EEPROM array with Block Lock™ protection - In circuit programmable ROM mode

• 2MHz SPI interface modes (0,0 and 1,1)

• Minimize EEPROM programming time - 32-byte page write mode - Self-timed write cycle - 5ms write cycle time (typical)

• 2.7V to 5.5V and 4.5V to 5.5V power supply operation

• Available packages - 14 Ld TSSOP, 8 Ld SOIC, 8 Ld PDIP

• Pb-free (RoHS compliant)