E1217X-E

32kHz Standard Watch CMOS IC

General Description

The e1217X is an integrated circuit in CMOS Silicon Gate Technology for analog watches. It consists of a

32-kHz oscillator, frequency dividers down to 1/64 Hz, output pulse formers and push-pull motor drivers. For tuning of the crystal, integrated capacitors are provided selectable mask option. Low current consumption and high oscillator stability are enabled by an on-chip voltage regulator.

Features

 32-kHz oscillator

 1.3 V to 1.8 V operating-voltage range

 180 nA typical current consumption

 Voltage regulator

 Integrated capacitors, mask selectable

 Mask options for pad designation, motor period and motor pulse width

 Low resistance outputs for bipolar stepping motor

 Motor fast-test function