PCA1604U

The PCA1604U series devices are CMOS integrated circuits specially suited for battery-operated,quartz-crystal-controlled wrist-watches, with bipolar stepping motors.

PCA1604U has many unique features: The first one is 32 kHz oscillator, amplitude regulated with excellent frequency stability.The second one is high immunity of the oscillator to leakage currents.The third one is very low current consumption is typically 150 nA.The forth one is stop function for accurate timing.The fifth one is chopped motor pulses available.The sixth one is power-on reset for fast testing.The seventh one is various test modes for testing the mechanical parts of the watch and the IC.There are some absolute maximum ratings about it.Supply voltage(VDD) is -1.8 V min and 6 V max when Vss is 0 V.All input voltage(V1) is Vss V min anf VDD V max.Operating ambient temperature(Tamb) is -10 min and 60 max.Storage temperature(Tstg) is -30 to 100.

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