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| ACE803ND Datasheet, PDF (1/9 Pages) ACE Technology Co., LTD. – 3-Pin Microprocessor Reset Circuits | |||
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ACE803ND
3-Pin Microprocessor Reset Circuits
Description
The ACE803ND is a microprocessor (μP) supervisory circuit used to monitor the power supplies in μP
and digital systems. It provides excellent circuit reliability and low cost by eliminating external components
and adjustments when used with 5V, 3.3V, 3.0V or 2.5V powered circuits.
The circuit performs a single function: it asserts a reset signal whenever the VCC supply voltage declines
below a preset threshold, keeping it asserted for at least 140ms after VCC has risen above the reset
threshold. Reset thresholds suitable for operation with a variety of supply voltages are available.
The ACE803ND has an open-drain output stage. The ACE803NDâs open-drain RESET output
requires a pull-up resistor that can be connected to a voltage higher than VCC. The ACE803ND has an
active-low RESET output. The reset comparator is designed to ignore fast transients on VCC, and the
outputs are guaranteed to be in the correct logic state for VCC down to 1V.
Low supply current makes the ACE803ND ideal for use in portable equipment. The ACE803ND is
available in a SOT-323 and SOT23-3 package.
Features
ï¬ No External Components
ï¬ Power Supply Transient Immunity
ï¬ Guaranteed Reset Valid to VCC=+1V
ï¬ Precision VCC Monitoring of 2.5V, 3V, 3.3V and 5V Supplies
ï¬ Fully Specified Over Temperature
ï¬ 2μA Supply Current
ï¬ 140ms Minimum Power-On Reset Pulse Width
ï¬ Available in One Output Configuration: Open-Drain Active-Low RESET Output
ï¬ SOT-323 and SOT23-3 Packages
ï¬ Wide Operation Temperature: -40°C to +85°C
Application
ï¬ Computers
ï¬ Controllers
ï¬ Portable/Battery-Powered Equipments
ï¬ Intelligent Instruments
ï¬ Critical μP and μC Power Monitoring
ï¬ Automotive
VER 1.1 1
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