GENERAL DESCRIPTION

The DS1672 incorporates a 32-bit counter and power-monitoring functions. The 32-bit counter is designed to count seconds and can be used to derive time-of-day, week, month, month, and year by using a software algorithm. A precision, temperature-compensated reference and comparator circuit monitors the status of VCC.

FEATURES

◾ 32-Bit Counter

◾ I2C* Serial Interface

◾ Automatic Power-Fail Detect and Switch Circuitry

◾ Power-Fail Reset Output

◾ Low-Voltage Oscillator Operation (1.3V min)

◾ Trickle-Charge Capability

◾ Underwriters Laboratory (UL) Recognized

◾ -40°C to +85°C Operating Temperature Range