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MIC2782CRYCS TR

Description
supervisory circuits dual input push button reset IC
Categorysemiconductor    Other integrated circuit (IC)   
File Size443KB,16 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance  
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MIC2782CRYCS TR Overview

supervisory circuits dual input push button reset IC

MIC2782
Dual-Input Push Button Reset IC
with Immediate and Delayed Outputs
General Description
The MIC2782 is a two input, two output push-button reset
IC. It will generate a reset pulse for a factory-programmed
reset timeout period after both manual reset inputs have
been held to a logic-low for the factory-programmed setup
period. The MIC2782 also has an ANDOUT logic output
which will activate if both inputs are held low for longer
than a debounce time (1.5ms), and deactivate if one or
both inputs are released for longer than a debounce time
(1.5ms). The RESET and ANDOUT outputs are active-low,
open-drain NMOS outputs.
The MIC2782 operates over the 1.5V to 5.5V supply
voltage range, consuming 2.2µA of supply current at 3.3V.
The device features 65kΩ internal pull-up resistors on both
of the inputs (/MR1 and /MR2). The device offers factory
programmed setup periods of 6s, 8s, 10s, or 12s and reset
timeout periods of 0.5s, 1s or 2s. It is available in a space
saving, 6-bump, 0.4mm pitch, 0.8mm × 1.2mm wafer level
chip scale package.
Data sheets and support documentation can be found on
Micrel’s web site at:
www.micrel.com.
Features
1.5V to 5.5V operating supply voltage range
2.2µA supply current with /MR1, /MR2 not asserted
Factory-programmed setup periods of 6s, 8s, 10s or 12s
Factory-programmed reset timeout periods of 0.5s, 1s or
2s
Integrated 65kΩ /MR1 and /MR2 pull-up resistors
Supports single push-button reset with /MR1 tied to
/MR2
RESET asserts after /MR1 and /MR2 are asserted low
for a setup period
ANDOUT asserts after /MR1 and /MR2 are asserted low
for a debounce time (1.5ms)
Open-drain RESET and ANDOUT outputs
6-bump, 0.4mm pitch, 0.8mm × 1.2mm wafer level chip
scale package (WLCSP)
Applications
Smart phones
Tablets
eBooks
Portable games
Portable navigation device
____________________________________________________________________________________________________________________
Typical Application
V
DD
= 1.5V to 5.5V
0.1uF
VDD
100k
100k
/MR1
RESET
/RESET
LOAD SWITCH
or PMIC
or µP
MIC2782
LOAD SWITCH
or PMIC
/RESET
or µP
PUSH-BUTTON
SWITCH
/MR1
PUSH-BUTTON
SWITCH
/MR2
/MR2
ANDOUT
GND
.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
February 21, 2014
Revision 2.0

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