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ZXCM210

Zetex Semiconductors
Part Number ZXCM210
Manufacturer Zetex Semiconductors
Description VERY LOW POWER MICROPROCESSOR RESET DEVICES
Published Apr 17, 2005
Detailed Description ZXCM209 ZXCM210 VERY LOW POWER MICROPROCESSOR RESET DEVICES DESCRIPTION The ZXCM209/210 are three terminal supervisory ...
Datasheet PDF File ZXCM210 PDF File

ZXCM210
ZXCM210

Overview
ZXCM209 ZXCM210 VERY LOW POWER MICROPROCESSOR RESET DEVICES DESCRIPTION The ZXCM209/210 are three terminal supervisory circuits used to monitor the power supplies in microprocessor and digital systems.
They provide a high performance economical solution when used with 5V, 3V or lower powered circuits.
Reset thresholds suitable for operation with a variety of supply voltages are available.
These devices provide a reset signal whenever the supply voltage falls below a preset threshold, keeping it asserted for a minimum delay period of 140ms after the supply has risen above the reset level.
The ZXCM209 has an active-low RESET output (which is guaranteed to be in the correct state for supplies down to 1V), while the ZXCM210 has an active-high RESET output.
The reset comparator has in built hysteresis to prevent erratic operation and is designed to ignore supply transients.
Low supply current (typically 2µA) makes the ZXCM209/210 devices ideal for use in portable equipment.
They are available in a 3-pin SOT23 surface mount package with an industry standard pinout.
FEATURES • • • • • • • • • • • • Enhanced alternative to MAX809/810 and similar parts Precision monitoring of 5V, 3.
3V, 3V power supply voltages 1% threshold tolerance 2µA typical supply current 140ms minimum power on reset pulse width Alternative minimum pulse widths available, contact your local sales office for availability RESET LOW Output (ZXCM209) RESET HIGH Output (ZXCM210) Power supply transient immunity No latch up No external components 3-Pin SOT23 package APPLICATIONS • • • • • • • • Computer systems Controllers Instrumentation Microprocessor power monitoring Microcontroller power monitoring Power supplies Portable/Battery-powered equipment Automotive APPLICATION CIRCUIT vcc vcc ZXCM Reset Output vcc Micro Reset Input Gnd Gnd ISSUE 3 - FEBRUARY 2001 1 ZXCM209 ZXCM210 ABSOLUTE MAXIMUM RATINGS Terminal Voltage with respect to GND VCC RESET, RESET Input Current, VCC Output Current Rate of Rise,...


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