H1344

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 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 1.5V + CTR 1 H1344 2 V40 V41 3 V47 8 7 6 45 Motor M Alarm Output Features  32kHz quartz oscillator  Integrated capacitors, mask selectable  Single battery operation  0.7 A typical current consumption  Low resistance outputs for bipolar stepping mot...