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H1344V41DL8A Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA |
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H1344V41DL8A Datasheet(HTML) 1 Page - EM Microelectronic - MARIN SA |
1 / 6 page R H1344 Copyright © 2004, EM Microelectronic-Marin SA 1 www.emmicroelectronic.com CMOS Circuit for Analog Quartz Clocks with Bipolar Stepping Motor Drive Description The H 1344 is a low power 32Khz analog clock integrated circuit designed in HCMOS 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 mask- programmable. See page 6 for already available options. Applications ! Analog clocks Features ! 32kHz quartz oscillator ! Integrated capacitors, mask selectable ! Single battery operation ! 0.7 µA typical current consumption ! Low resistance outputs for bipolar stepping motor ! Mask options for pad designation, motor period and pulse width, alarm frequency, modulation and duty cycle ! Alarm output function compatible with either NPN or PNP-driver transistors ! Alarm input function ! 1024Hz output on ALIN pad for oscillator frequency verification ! Fast test function ! ESD protected terminals Functional Diagram 1.5V + H1344 V40 V41 V47 1 2 3 4 8 7 6 5 M Alarm Output CTR Motor Fig. 1 Pin Assignment H1344 V38 1 3 4 2 8 6 5 7 VDD MOT2 ALARMIN VSS OSCOUT MOT1 ALARMOUT OSCIN H1344 V40 V41 V47 V143 1 3 4 2 8 6 5 7 VDD MOT2 ALARMIN VSS OSCIN MOT1 ALARMOUT OSCOUT Fig. 2 EM MICROELECTRONIC - MARIN SA |
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