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H1344 - CMOS Circuit for Analog Quartz Clocks

General Description

The H1344 is a low power 32kHz analog clock integrated circuit designed in CMOS technology to drive a bipolar stepping motor.

A set of capacitors is provided on chip to be connected, in any combination, to the two oscillator terminals, with a maximum total capacitance of 48pF.

Key Features

  •  32kHz quartz oscillator  Integrated capacitors, mask selectable  Single battery operation  0.7 A typical current consumption  Low resistance outputs for bipolar stepping mot.

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Full PDF Text Transcription for H1344 (Reference)

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EM MICROELECTRONIC - MARIN SA H1344 CMOS Circuit for Analog Quartz Clocks with Bipolar Stepping Motor Drive Description The H1344 is a low power 32kHz analog clock integr...

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r Drive Description The H1344 is a low power 32kHz analog clock integrated circuit designed in CMOS technology to drive a bipolar stepping motor. A set of capacitors is provided on chip to be connected, in any combination, to the two oscillator terminals, with a maximum total capacitance of 48pF. Both the motor pulse period and the motor pulse width are maskprogrammable (see page 6 for already available options). For versions v143 and v221, the TEST1 and TEST2 pins are only for test and must not be used in the application. Applications  Stepper Motor Driver for time-switches  Analog clocks Functional Diagram 1.

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