MIC1810 Datasheet, PDF (1/8 Pages) Micrel Semiconductor – Microprocessor Reset Circuit

MIC1810 Microprocessor Reset Circuit
MIC1810
Microprocessor Reset Circuit
Description
The MIC1810 is an inexpensive microprocessor
supervisory circuits that monitor power supplies in
microprocessor based systems.
The function of these devices is to assert a reset if the
power supply drops below a designated reset threshold
level. Several different reset threshold levels are
available to accomodate 5%, 10%, or 15% drop in 5V
powered systems.
The MIC1810 has an active low RESET output. The
reset output is guaranteed to remain asserted for a
minimum of 100ms after VCC has risen above the
designated reset threshold level. The MIC1810 comes
in a 3-pin SOT-23 package.
Pin Configuration
Top View
RESET 1
MIC1810
VCC 2
3 GND
Typical Applications
· ^{Portable Equipment}
· ^{Intelligent Instruments}
· ^{Critical Microprocessor Power Monitoring}
· ^{Printers/Computers}
· ^Controllers
Reset Threshold
Voltage (V)
4.62
4.37
4.12
Device
Suffix
-5
-10
-15
Features
· RESET Remains Valid with VCC as Low
as 1.4V
· ^{Precision Voltage Monitor for 5%, 10%,}
or 15% drop in 5V Power Supplies
· ^{Available in 3-Pin SOT23 Package}
· ^{9µA Supply Current (typical)}
· ^{100ms Minimum Reset Pulse Width}
· ^{No External Components Required}
Ordering Information
Part
MIC1810_U
Package
3-Lead SOT23
Temp. Range
-40°C to +85°C
Place the device suffix of desired reset threshold voltage from table above in
blank to complete the part number.
Typical Operating Circuit
8++
8++
MIC1810
4-5-6
8++
µP
4-5-6
1