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ASM1812

Alliance Semiconductor
Part Number ASM1812
Manufacturer Alliance Semiconductor
Description Low Power 5V uP Reset Active HIGH
Published Aug 13, 2007
Detailed Description www.DataSheet4U.com February 2005 rev 1.4 ASM1812 Low Power 5V µP Reset Active HIGH, Push-Pull Output Applications • •...
Datasheet PDF File ASM1812 PDF File

ASM1812
ASM1812

Overview
www.
DataSheet4U.
com February 2005 rev 1.
4 ASM1812 Low Power 5V µP Reset Active HIGH, Push-Pull Output Applications • • • • • • • Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers General Description The ASM1812 is a voltage supervisory device with low-power, 5V µP Reset, active HIGH, Push-Pull output.
Maximum supply current over temperature is a low 20µA.
The ASM1812 issues an active HIGH reset signal whenever the monitored supply is out of tolerance.
A precision reference and comparator circuit monitor power supply (VCC) level.
Tolerance level options are 5%, 10% and 15%.
When an out-oftolerance condition is detected, an internal power-fail signal is generated which forces an active HIGH reset signal.
After VCC returns to an in-tolerance condition, the reset signal remains active for 150ms to allow the power supply and system microprocessor to stabilize.
The ASM1812 is designed with a push-pull output stage and operates over the extended industrial temperature range.
Devices are available in TO-92 and compact surface mount SOT-23 packages.
Other low power products in this family include the ASM1810/ 11/15/16/17, ASM1233D and ASM1233M.
Typical Operating Circuit VCC ASM1812 Microprocessor RESET RESET GND Key Features • • • • • • • • • Low Supply Current •20 µA maximum (5.
5 V) Automatically restarts a microprocessor after power failure 150ms reset delay after VCC returns to an in-tolerance condition Active HIGH power-up reset Precision temperature-compensated voltage reference and comparator Eliminates external components TO-92 and compact surface mount SOT-23 package Push-Pull output for minimum current drain Operating temperature -40°C to +85°C Reference Supply Tolerance Bias Block Diagram VCC 2 ASM1812 + Delay 150ms Typical 1 - RESET 3 GND Alliance Semiconductor 2575 Augustine Drive .
Santa Clara, CA 95054 .
Tel: 408.
855.
4900 .
Fax: 408.
855.
4999 .
www.
alsc.
com Notice: The information...


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