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 2.2A of supply current at 3.3V.
The device features 65kinternal 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 x 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
2.2A 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 65k /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 x 1.2mm Wafer Level
Chip Scale Package (WLCSP)
Smart Phones
Tablets
eBooks
Portable Games
Portable Navigation Device
Applications
____________________________________________________________________________________________________________________
Typical Application
.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 •
http://www.micrel.com
January 2012
M9999-010912-A
Micrel, Inc.
MIC2782
Ordering Information
Setup Period
Part Number
MIC2782CLYCS
(1)
MIC2782CMYCS
MIC2782CRYCS
MIC2782DLYCS
MIC2782DMYCS
(1)
MIC2782DRYCS
(1)
MIC2782ELYCS
MIC2782EMYCS
MIC2782ERYCS
MIC2782FLYCS
(1)
(1)
(1)
(1)
Reset Timeout Period
(t
RESET
)
(s)
0.5
1
2
0.5
1
2
0.5
1
2
0.5
1
2
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
6-bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP
Package
Part Marking
-
-
-
UKU
-
-
UKW
-
-
-
-
-
(t
SETUP
)
(s)
6
6
6
8
8
8
10
10
10
12
12
12
(1)
MIC2782FMYCS
(1)
MIC2782FRYCS
(1)
Notes:
1.
Contact Factory for availability.
Ordering Guide
MIC2782ELYCS TR
Setup Period:
C – 6 seconds
D – 8 seconds
E – 10 seconds
F – 12 seconds
TR – Tape and Reel
Reset Timeout Period:
L – 0.5 seconds
M – 1 seconds
R – 2 seconds
Package:
CS – 0.8mm x 1.2mm WLCSP
Junction Temperature
Y – -40˚C to +85˚C
January 2012
2
M9999-010912-A
Micrel, Inc.
MIC2782
Chip Scale Package (CS) Bump Configuration
Y = Year Code
WW = Week Code
TOP VIEW
TOP VIEW (BUMP SIDE DOWN)
BOTTOM VIEW (BUMP SIDE UP)
6-Bump, 0.4mm pitch, 0.8mm x 1.2mm WLCSP Package
Bump
Designation
A1
Bump
Name
ANDOUT
Pin Function
NMOS Open-Drain output, Active-Low. Asserts low 1.5ms after /MR1 and /MR2 are both asserted low.
Connect a resistor greater than 5k from the ANDOUT pin to VDD in order to pull up the ANDOUT
output voltage when inactive. No ESD diode from ANDOUT to VDD. Please see the Functional
Description and Timing Diagram sections for further details of how the ANDOUT output functions.
Manual Reset Input 2, Active-Low. Internal 65k (typical) Pull-Up Resistor to VDD. Pulling both manual
reset inputs low for longer than the setup period causes one RESET output pulse for the reset timeout
delay period.
NMOS Open-Drain output, Active-Low. Asserts low after /MR1 and /MR2 have both asserted low for
longer than setup period. Connect a resistor greater than 5k from the RESET pin to VDD in order to
pull up the RESET output voltage when inactive. No ESD diode from RESET to VDD. Please see the
Functional Description and Timing Diagram sections for further details of how the RESET output
functions.
Manual Reset Input 1, Active-Low. Internal 65k (typical) Pull-Up Resistor to VDD. Pulling both manual
reset inputs low for longer than the setup period causes one RESET output pulse for the reset timeout
delay period.
Supply Voltage. Bypass to ground with minimum 0.1µF capacitor.
Supply Ground.
A2
/MR2
B1
RESET
B2
C1
C2
/MR1
VDD
GND
January 2012
3
M9999-010912-A
Micrel, Inc.
MIC2782
Absolute Maximum Ratings
(1)
Supply Voltage (V
DD
)......................................GND to +6.0V
Input Voltage (V
/MR1
, V
/MR2
)………GND - 0.3V to V
DD
+ 0.3V
NMOS Output Voltage (V
RESET,
V
ANDOUT
)…....GND - 0.3V to
+6.0V
Lead Temperature (soldering, 10sec.)....................... 260°C
Storage Temperature (Ts)..........................-55°C to +150°C
ESD Rating (Human Body Model)
(3)
.............................. 2kV
ESD Rating (Machine Model)…………………………...200V
Operating Ratings
(2)
Supply Voltage (V
DD
).................................... +1.5V to +5.5V
Input Voltage (V
/MR1
, V
/MR2
)…………………...….…0V to V
DD
NMOS Output Voltage (V
RESET,
V
ANDOUT
)….……0V to +5.5V
Junction Temperature (T
J
) .......................... –40°C to +85°C
Package Thermal Resistance
6-Bump, 0.4mm Pitch WLCSP (θ
JA
) ................125°C/W
Electrical Characteristics
(4)
For typical values, V
DD
= 3.3V, /MR1 = /MR2 = Open, T
J
= 25°C,
bold
values indicate –40°C
T
J
+85°C; unless noted.
Parameter
Power Supply Input
Supply Voltage (V
DD
)
Supply Current (I
DD
)
Reset Time
Ordering Option: C
Setup Period (t
SETUP
)
Ordering Option: D
Ordering Option: E
Ordering Option: F
Ordering Option: L
Reset Timeout Period (t
RESET
)
ANDOUT Debounce Time (t
DB
)
Output Low Voltage (V
OL
)
Ordering Option: M
Ordering Option: R
V
/MR1,2
< (V
IL
– 100mV)
V
DD
= 4.5V, I
SINK
= 1.6mA
V
DD
= 3.3V, I
SINK
= 1.2mA
V
DD
= 1.5V, I
SINK
= 0.5mA
Open-Drain Leakage Current (I
LEAKAGE
)
/MR1, /MR2 Input
Input High Voltage (V
IH
)
Input Low Voltage (V
IL
)
Internal Pull-Up Resistance (R
PU
)
Notes:
1.
2.
3.
4.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF.
Specification for packaged product only.
Conditions
Reset Output Valid
V
DD
= 3.3V, /MR1 = /MR2 = VDD
V
DD
= 5.0V, /MR1 = /MR2 = VDD
V
DD
= 3.3V, /MR1 = /MR2 = GND
Min.
1.5
Typ.
Max.
5.5
Units
V
µA
2.2
3.2
120
4.0
5.0
5.4
7.2
9.0
10.8
0.4
0.9
1.8
1
6
8
10
12
0.5
1
2
1.5
6.6
8.8
11
13.2
0.6
1.1
2.2
2
0.3
0.3
0.3
300
nA
V
s
ms
s
RESET, ANDOUT Inactive
V
RESET
, V
ANDOUT
= 5.5V
1.2
V
0.4
V
kΩ
65
75
For /MR1, /MR2
55
January 2012
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M9999-010912-A
Micrel, Inc.
MIC2782
Typical Characteristics
V
DD
Supply Current
vs. Temperature
SUPPLY CURRENT (µA)
V
DD
= 3.3V
/MR1 = NOT ASSERTED
/MR2 = NOT ASSERTED
V
DD
Supply Current
vs. Supply Voltage
4.4
T
A
= 25°C
/MR1 = NOT ASSERTED
/MR2 = NOT ASSERTED
122
3.4
Supply Current for /MR1 and
/MR2 Inputs Low
vs. Temperature
SUPPLY CURRENT (µA)
V
DD
= 3.3V
/MR1 = /MR2 = GND
121
SUPPLY CURRENT (µA)
3.0
3.6
2.6
2.8
2.2
120
1.8
2.0
119
1.4
-40
-15
10
35
60
85
1.2
0
1
2
3
4
5
6
118
-40
-15
10
35
60
85
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Supply Current for /MR1 and
/MR2 Inputs Low
vs. Supply Voltage
280
Setup Period
vs. Temperature
10.6
V
DD
= 3.3V
MIC2782ELYCS
Setup Period
vs. Supply Voltage
11.0
T
A
= 25°C
MIC2782ELYCS
SUPPLY CURRENT (µA)
SETUP PERIOD (s)
220
SETUP PERIOD (s)
-40
-15
10
35
60
85
TA = 25°C
/MR1 = /MR2 = GND
10.4
10.5
10.2
10.0
160
100
10.0
9.5
40
0
1
2
3
4
5
6
9.8
9.0
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
Reset Timeout Period
vs. Temperature
0.60
0.60
Reset Timeout Period
vs. Supply Voltage
RESET TIMEOUT PERIOD (s)
T
A
= 25°C
MIC2782ELYCS
0.55
RESET TIMEOUT PERIOD (s)
V
DD
= 3.3V
MIC2782ELYCS
0.55
0.50
0.50
0.45
0.45
0.40
-40
-15
10
35
60
85
0.40
0
1
2
3
4
5
6
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
January 2012
5
M9999-010912-A
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