EM1344 Datasheet | EM Microelectronic

DATASHEET Ɩ EM1344 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 bination, 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 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 Features  32kHz...