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ASM1811

Alliance Semiconductor
Part Number ASM1811
Manufacturer Alliance Semiconductor
Description Low Power 5V uP Reset Active LOW
Published Aug 13, 2007
Detailed Description www.DataSheet4U.com February 2005 rev 1.4 ASM1811 Low Power 5V µP Reset Active LOW, Open - Drain Output Applications •...
Datasheet PDF File ASM1811 PDF File

ASM1811
ASM1811

Overview
www.
DataSheet4U.
com February 2005 rev 1.
4 ASM1811 Low Power 5V µP Reset Active LOW, Open - Drain Output Applications • • • • • • • Set-top boxes Cellular phones PDAs Energy management systems Embedded control systems Printers Single board computers General Description The ASM1811 is a voltage supervisory device with a low-power, 5V µP Reset, active LOW, open-drain output.
Maximum supply current over temperature is a low 20µA.
The ASM1811 generates an active LOW 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 LOW 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.
Typical Operating Circuit VCC ASM1811 The ASM1811 is designed with a open-drain output stage and operates over the extended industrial temperature range.
Devices are available in low cost TO-92 and compact surface mount SOT-23 packages.
Other low power products in this family include the ASM1810/ 12/15/16/17, ASM1233D and ASM1233M.
RESET Microprocessor 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 LOW power-up reset Precision temperature-compensated voltage reference and comparator Eliminates external components Low cost TO-92 and compact surface mount SOT-23 packages Operating temperature -40°C to +85°C Block Diagram VCC 2 Supply Tolerance Bias ASM1811 5.
5KΩ 1 RESET + Reference Delay 150ms Typical 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 in this docum...


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