EM1537 Low-Power CMOS

EM Microelectronic

Description

R EM MICROELECTRONIC - MARIN SA EM1537 Low Power 32 kHz Circuit for Analog Quartz Watches .
The EM1537 is an integrated circuit in a low power CMOS technology for battery operated wristwatches with bipolar stepping motors.

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Datasheet Specifications

Part number: EM1537
Manufacturer: EM Microelectronic
File Size: 233.00 KB
Datasheet: EM1537-EMMicroelectronic.pdf
Description: Low-Power CMOS

Features

* Low power 32 kHz Quartz oscillator
* Operating voltage ranges 1.55V and 3 Volt.
* Very low current consumption typ. 100 nA at 1.5V.
* Motor pulse width motor period and motor pulse chopping is programmable in a wide range by metal mask and don’t require additional bonds.
* Full

Applications

* Analog watches
* Driver for bipolar stepping motors Functional Diagram Vn RESET Vn RESET VP VP MOT1 CTR H1537 OSCIN MOT2 Rm (Stepping Motor) OSCOUT VP VP Operating range of Trimmer Capacitance: 3pF ≤ CTR ≤ 30 pF Copyright © 2006, EM Microelectronic-Marin SA 1 10/06

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