Analogic AAT3518IGV-4.00-B-B-T1 Micropower up reset with watchdog timer Datasheet

AAT3510/1/2/3/4/5/6/7/8/9
Micropower µP Reset with Watchdog Timer
PowerManager
SmartSwitch™™
General Description
Features
The AAT351x PowerManager™ products are
members of AnalogicTech™'s Total Power
Management IC™ product family. This family of
Microprocessor Reset Circuits provides the ultimate in versatility, allowing system designers full
customization of the µP monitor and Reset function
without any additional components. The AAT351x
family offers several combinations of threshold
voltage, watchdog timeout period, reset active period and output drive configurations, which are all
factory programmed options. All devices are available in 32 reset threshold voltages from 2.6V up to
5V, with three watchdog timeout periods from
6.3ms to 1600ms and three reset timeouts from
1ms up to 140ms. Available output configurations
are active low push-pull, active low open drain,
active low bi-directional and active high push-pull
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•
•
The AAT351x family is designed to ignore fast negative transients on VDD and to ensure that Reset
outputs remain valid down to 1V.
Applications
The AAT351x family is available in the space saving
5-pin SOT23 surface mount package and is specified over the -40 to +85°C temperature range.
•
•
•
•
•
•
•
•
•
•
•
Tight voltage tolerance: ±1.5%
Low quiescent current: 5µA
Guaranteed Reset Valid down to 1V
32 voltage options from 2.6V to 5.0V
3 Reset active period options
• 1ms, 20ms, 140ms
3 Watchdog timeout period options
• 6.3ms, 102ms, 1600ms
4 output options:
• Open drain
• Inverting
• Non-inverting
• Bi-directional
Low Tempco: 100ppm/°C
5-pin SOT23 package
Notebook Computers
Portable Electronics
Industrial Controllers
Intelligent Instruments
Critical µP and µC Supply Monitoring
Power-On reset circuits
Embedded Control Systems
Typical Application
V DD
V CC
AAT351x
V DD
RESET
(RESET)
WDI
RESET
INPUT
µP
I/O LINE
GND
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Micropower µP Reset with Watchdog Timer
Pin Descriptions
Pin #
AAT3510 AAT3512 AAT3513
AAT3511
AAT3514
AAT3517
AAT3518
AAT3515
AAT3516
AAT3519
Symbol
1
N/A
1
1
RESET
2
2
1
2
3
2
3
GND
RESET
3
4
3
4
N/A
4
4
N/A
MR
WDI
5
5
5
5
VCC
Function
AAT3510/13/15: RESET output goes low whenever VDD
falls below the reset threshold. CMOS push-pull Output
AAT3511/14/16: RESET output goes low whenever VDD
falls below the reset threshold. Bidirectional CMOS pushpull Output intended to interface directly to microprocessors with bi-directional resets
AAT3517/18/19: RESET output goes low whenever VDD
falls below the reset threshold. Open drain output. Connect
a pull-up resistor to any supply voltage up to 5.5V
Ground connection pin
RESET active-high output. This CMOS push-pull signal is
the logical inverse of RESET.
Manual reset input pin. Active low. Pull low to force a reset.
Watchdog input pin. Triggers a reset if it remains in a
steady state for the duration of the watchdog timer period.
Input voltage pin
Pin Configuration
5-lead SOT23
(Top View)
RESET
1
GND
2
MR
3
5
4
5-lead SOT23
(Top View)
VCC
WDI
RESET
1
GND
2
RESET
3
AAT3510
AAT3511
AAT3517
1
GND
2
RESET
3
5
4
AAT3515
AAT3516
AAT3519
2
VCC
4
WDI
AAT3513
AAT3514
AAT3518
5-lead SOT23
(Top View)
RESET
5
5-lead SOT23
(Top View)
VCC
MR
RESET
1
GND
2
MR
3
5
VCC
4
WDI
AAT3512
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Micropower µP Reset with Watchdog Timer
Absolute Maximum Ratings
(TA=25°C unless otherwise noted)
Symbol
Description
VCC
VMR, VWDI
VCC to GND
MR, WDI to GND
RESET to GND (Push-Pull or Bidirectional Output)
RESET to GND (Open Drain Output)
Maximum Continuous Input Current
RESET/RESET Output Current
Rate of rise of VCC
Operating Junction Temperature Range (-40° to 150°C)
VRESET
IVCC, IMR, IWDI
IRESET
dVCC/dt
TJ
Max
Units
-0.3 to 6
-0.3 to VCC+0.3
-0.3 to VCC+0.3
-0.3 to 6
20
20
100
150
V
V
V
mA
mA
V/µs
°C
Note: Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at conditions other than the operating conditions specified is not implied. Only one Absolute Maximum rating should be applied at any one time.
Thermal Information
Symbol
ΘJA
PD
Description
Maximum Thermal Resistance1
Maximum Power Dissipation1
Value
Units
190
526
°C/W
mW
Note 1: Mounted on FR4 board
Electrical Characteristics
(VCC = 2.5V to 5.5V, TA = -40 to +85°C 1 unless otherwise noted.
Typical values are at TA=25°C )
Symbol Description
VCC
ICC
VTH
TC
tRP
TRD
Conditions
Operating Voltage Range TA = -40°C to +85°C
AAT3510/1/2/3/4/7/8:
MR & WDI unconnected
Supply Current
AAT3515/6/9:
MR unconnected
TA = 25°C
Reset Threshold Voltage
TA = -40 to +85°C
Reference Voltage
-40°C < TA < +85°C
Temp Coeff
AAT351xIGV-xx-A-x-T1
Reset Active Timeout
AAT351xIGV-xx-B-x-T1
Period
AAT351xIGV-xx-C-x-T1
VCC to RESET Delay
VCC falling at 1mV/µs
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Min
Typ
1
VCC
VCC
VCC
VCC
=
=
=
=
3.6V
5.5V
3.6V
5.5V
5
6
VTHNOM-1.5% VTH
VTHNOM-2.5% VTH
±40
1
20
140
1.4
28
200
40
Max
Units
5.5
15
18
15
18
VTHNOM+1.5%
VTHNOM+2.5%
V
µA
V
ppm/°C
2
40
280
ms
µs
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AAT3510/1/2/3/4/5/6/7/8/9
Micropower µP Reset with Watchdog Timer
Electrical Characteristics
(VCC = 2.5V to 5.5V, TA = -40 to +85ºC1 unless otherwise noted.
Typical values are at TA=25°C )
Symbol
Description
Conditions
Min
Push/Pull RESET Output (AAT3510, 3512, 3513, 3514, 3515, 3516, 3518, 3519)
VCC ≥ 1.0V, ISINK = 50µA
VCC ≥ 1.2V, ISINK = 100µA
VOL
RESET Low Output Voltage
VCC ≥ 2.7V, ISINK = 1.2mA
VCC ≥ 4.5V, ISINK = 3.2mA
VCC ≥ 2.7V, ISOURCE = 500µA
0.8 x VCC
VOH
RESET High Output Voltage
VCC ≥ 4.5V, ISOURCE = 800µA
VCC - 1.5
VCC ≥ 2.7V, ISINK = 1.2mA
RESET Low Output Voltage
VCC ≥ 4.5V, ISINK = 3.2mA
VOH
VCC ≥ 1.8V, ISOURCE = 150µA
0.8 x VCC
RESET High Output Voltage
VCC ≥ 2.7V, ISOURCE = 500µA
0.8 x VCC
VCC ≥ 4.5V, ISOURCE = 800µA
VCC - 1.5
Bidirectional RESET Output (AAT3511, 3514, 3516)
tS
Transition Flip-Flop Setup Time2
VCC = 3.0V, CL = 120pF
VCC = 5.0V, CL = 200pF
tR
RESET Output Rise Time3
VCC = 3.0V, CL = 250pF
VCC = 5.0V, CL = 400pF
VPTH
Active Pullup Enable Threshold
VCC = 5.0V
0.4
RESET Active Pullup Current
VCC = 5.0V
RESET Pullup Resistance
4.2
Open-Drain RESET Output (AAT3517, 3518, 3519)
VCC ≥ 1.0V, ISINK = 50µA
VCC ≥ 1.2V, ISINK = 100µA
VOL
RESET Low Output Voltage
VCC ≥ 2.7V, ISINK = 1.2mA
VCC ≥ 4.5V, ISINK = 3.2mA
ID(OFF)
Reset Leakage Current
Watchdog Input (AAT3510, 3511, 3512, 3513, 3514, 3517, 3518)
AAT351xIGV-xx-x-A-T1
4.3
tWD
Watchdog Timeout Period
AAT351xIGV-xx-x-B-T1
71
4
AAT351xIGV-xx-x-C-T1
1.12
tWDI
WDI Minimum Pulse Width
VIL = 0.3 x VCC, VIH = 0.7 x VCC
VIL
WDI Input Threshold 5
0.3 x VCC
VIH
WDI Input Threshold 5
WDI = VCC, time average
IWDI
WDI Input Current 6
-20
VWDI = 0, time average
4
Typ
Max
Units
0.3
0.3
0.3
0.4
V
V
0.3
0.4
V
400
ns
333
333
666
666
0.65
20
4.7
5.2
0.3
0.3
0.3
0.4
1.0
6.3
102
1.6
50
120
-15
9.3
153
2.4
0.8 x VCC
160
ns
V
mA
kΩ
V
µA
ms
s
ns
V
µA
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AAT3510/1/2/3/4/5/6/7/8/9
Micropower µP Reset with Watchdog Timer
Symbol
Description
Conditions
Manual RESET Input (AAT3510, 3511, 3512, 3515, 3516, 3517, 3519)
VIL
MR Input Threshold
VIH
MR Input Threshold
MR Input Pulse Width
MR Glitch Rejection
MR Internal Pullup Resistance
TA = 25°C
MR to Reset Delay
VCC = 5V
Min
Typ
Max
0.3 x VCC
0.7 x VCC
1
35
100
52
230
75
Units
V
µs
ns
kΩ
ns
Note 1: Over-temperature limits are guaranteed by design, not production tested.
Note 2: This is the minimum time RESET must be held low by an external pulldown source to set the active pullup flip-flop.
Note 3: Measured from RESET VOL to (0.8 x VCC), Open Circuit Output.
Note 4: Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518.
Note 5: WDI is internally serviced within the watchdog period if WDI is left unconnected.
Note 6: The WDI input current is specified as the average input current when the WDI input is driven high or low. The WDI input is
designed for a three-stated-output device with a 10µA maximum leakage current and capable of driving a maximum capacitive load of
200pF. The three-state device must be able to source and sink at least 200µA when active.
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Micropower µP Reset with Watchdog Timer
Typical Characteristics
(Unless otherwise noted, VIN = 3V, TA = 25°C)
Supply Current vs. Temperature
10
Supply Current (µA)
9
Vcc=5V
8
7
6
Vcc=3V
5
4
3
2
Vcc=1V
1
0
-40
-20
0
20
40
60
80
100
Reset Propagation Delay (µs)
Vcc Falling To RESET Propagation
Delay vs. Temperature
160
140
Vcc falling at 1mV/µs
V RST -Vcc=100mV
120
100
80
60
40
20
0
-40
-20
Temperature (°C)
400
350
300
250
200
0
20
40
60
80
100
Normalized Timeout Period
Propagation Delay (ns)
V CC=5V
-20
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
-40
-20
Temperature (°C)
0
20
40
Temperature (°C)
6
80
100
0
20
40
60
80
100
Maximum VCC Transient Duration vs.
Reset Threshold Overdrive
Transient Duration (µs)
Normalized Timeout Period
-20
60
Temperature (°C)
Normalized Watchdog Timeout Period
vs. Temperature
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
-40
40
Normalized Reset Timeout Period vs.
Temperature
500
-40
20
Temperature (°C)
Manual Reset to RESET Propagation
Delay vs. Temperature
450
0
60
80
100
80
70
60
50
40
V RST =2.63V
30
20
10
0
10
100
1000
Reset Threshold Overdrive (mV) VRST-VCC
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Micropower µP Reset with Watchdog Timer
Typical Characteristics
(Unless otherwise noted, VIN = 3V, TA = 25°C)
Bidirectional Pullup Characteristic
+5V
PASSIVE
74HC05 4.7k
4.7kΩ
INPUT
100pF
PULLUP
2V/div
RESET,
ACTIVE
PULLUP
2V/div
+5V
74HC05
RESET
INPUT
100pF
RESET,
INPUT
5V/div
VCC
MR GND
200ns/div
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Micropower µP Reset with Watchdog Timer
Functional Block Diagram
VCC
Reset
Generator
VCC
RESET3
RESET4
VREF
MR1
WDI2
Watchdog
Timer
Detector
Watchdog
Timer
GND
Note 1: MR pin available on AAT3510/1/2/5/6/7/9
Note 2: WDI pin avaliable on AAT3510/1/2/3/4/7/8
Note 3: RESET pin available on AAT3510/1/3/4/5/6/7/8/9
Note 4: RESET pin available on AAT3512/3/4/5/6/8/9
8
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Micropower µP Reset with Watchdog Timer
Factory Trimmed Reset Thresholds* and Ordering Information
AAT351x IGV - X.XX-X- X-T1
Watchdog Timeout (if applicable)
Reset Active Period
Threshold Voltage
Reset Active Period
A: TR(MIN) = 1ms
B: TR(MIN) = 20ms
C: TR(MIN) = 140ms
Watchdog Timeout Period
A: TWD(NOM) = 6.3ms
B: TWD(NOM) = 102ms
C: TWD(NOM) = 1600ms*
VDD Threshold Voltage
2.63:
2.70:
2.80:
2.93:
3.00:
3.08:
3.20:
3.30:
3.40:
3.50:
3.60:
3.70:
3.80:
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
=
=
=
=
=
=
=
=
=
=
=
=
=
2.63V
2.7V
2.8V
2.93V
3.0V
3.08V
3.2V
3.3V
3.4V
3.5V
3.6V
3.7V
3.8V
3.90:
4.00:
4.10:
4.20:
4.38:
4.40:
4.50:
4.63:
4.70:
4.80:
4.90:
5.00:
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
VTH(NOM)
=
=
=
=
=
=
=
=
=
=
=
=
3.9V
4.0V
4.1V
4.2V
4.3V
4.38V
4.5V
4.63V
4.7V
4.8V
4.9V
5.0V
* Watchdog timeout period C is not avaliable on AAT3513, AAT3514 and AAT3518.
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Micropower µP Reset with Watchdog Timer
Ordering Information
Package
Marking1
Part Number (Tape and Reel)
SOT23-5
HVXYY
AAT3510IGV-2.63-C-C-T1
SOT23-5
HUXYY
AAT3510IGV-2.93-C-C-T1
SOT23-5
HGXYY
AAT3510IGV-3.08-C-C-T1
SOT23-5
HHXYY
AAT3510IGV-4.38-C-C-T1
SOT23-5
EWXYY
AAT3511IGV-2.63-C-C-T1
SOT23-5
MYXYY
AAT3512IGV-2.63-A-C-T1
SOT23-5
JOXYY
AAT3512IGV-2.63-C-C-T1
SOT23-5
HFXYY
AAT3513IGV-2.63-C-C-T1
SOT23-5
HEXYY
AAT3515IGV-2.63-C-T1
SOT23-5
HIXYY
AAT3515IGV-2.93-B-T1
SOT23-5
KLXYY
AAT3515IGV-2.93-C-T1
SOT23-5
JNXYY
AAT3515IGV-3.08-C-T1
SOT23-5
KMXYY
AAT3515IGV-4.38-C-T1
SOT23-5
MFXYY
AAT3515IGV-4.63-C-T1
SOT23-5
INXYY
AAT3517IGV-2.63-C-C-T1
SOT23-5
LZXYY
AAT3517IGV-2.8-B-C-T1
SOT23-5
IQXYY
AAT3517IGV-2.93-C-C-T1
Note: Sample stock is held on part numbers listed in bold.
Note 1: XYY = date and assembly code.
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Micropower µP Reset with Watchdog Timer
Package Information
SOT23-5
2.85 ± 0.15
1.90 BSC
0.40 ± 0.10
0.075 ± 0.075
0.15 ± 0.07
4° ± 4°
10° ± 5°
1.10 ± 0.20
0.60 REF
1.20 ± 0.25
2.80 ± 0.20
1.575 ± 0.125
0.95
BSC
0.60 REF
0.45 ± 0.15
GAUGE PLANE
0.10 BSC
All dimensions in millimeters.
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Micropower µP Reset with Watchdog Timer
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rights, or other intellectual property rights are implied.
AnalogicTech reserves the right to make changes to their products or specifications or to discontinue any product or service without notice, and advise customers to obtain the latest
version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale
supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability.
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other quality control techniques are utilized to the extent AnalogicTech deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed.
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830 E. Arques Avenue, Sunnyvale, CA 94085
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Fax (408) 737-4611
12
3510.2004.08.1.4
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