AAT3519 [AAT]
Micropower uP Reset with Watchdog Timer; 微复位与看门狗定时器
| 型号： | AAT3519 |
| 厂家： | 
ADVANCED ANALOG TECHNOLOGY, INC. |
| 描述： | Micropower uP Reset with Watchdog Timer |
| 文件： | 总11页 (文件大小：111K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
AAT3510/1/2/3/4/5/6/7/8/9
Micropower µP Reset with Watchdog Timer
™
PowerManager
General Description
Features
The AAT351x PowerManager products are mem-
bers of AnalogicTech's Total Power Management
IC™ (TPMIC™) product family. This family of
microprocessor reset circuits provides the ultimate
in versatility, allowing system designers full cus-
tomization 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 peri-
od, and output drive configurations, which are all
factory-programmed options. All devices are avail-
able 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.
•
•
•
•
•
Tight Voltage Tolerance: ±1.5%
Low Quiescent Current: 5µA
Guaranteed Reset Valid Down to 1V
32 Voltage Options from 2.6V to 5.0V
Three Reset Active Period Options:
— 1ms, 20ms, 140ms
Three Watchdog Timeout Period Options:
— 6.3ms, 102ms, 1600ms
Four Output Options:
— Open Drain
— Inverting
— Non-Inverting
— Bi-Directional
•
•
•
•
Low Temperature Coefficient: 100ppm/°C
5-Pin SOT23 Package
The AAT351x family is designed to ignore fast neg-
ative transients on VDD and to ensure that reset
outputs remain valid down to 1V.
Applications
•
•
•
•
•
•
•
Critical µP and µC Supply Monitoring
Embedded Control Systems
Industrial Controllers
Intelligent Instruments
Notebook Computers
The AAT351x family is available in the Pb-free,
space-saving 5-pin SOT23 surface mount package
and is specified over the -40 to +85°C temperature
range.
Portable Electronics
Power-On Reset Circuits
Typical Application
VDD
VDD
VCC
RESET
INPUT
RESET
(RESET)
AAT351x
µP
WDI
I/O LINE
GND
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Micropower µP Reset with Watchdog Timer
Pin Descriptions
Pin #
AAT3510 AAT3512 AAT3513 AAT3515
AAT3511
AAT3517
AAT3514 AAT3516
AAT3518 AAT3519 Symbol Function
1
N/A
1
1
RESET
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 push-
pull 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.
2
2
1
2
3
2
3
GND
N/A
RESET
RESET active-high output. This CMOS push-pull signal is
the logical inverse of RESET.
3
4
3
4
N/A
4
4
MR
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.
N/A
WDI
5
5
5
5
VCC
Pin Configuration
5-lead SOT23
(Top View)
5-lead SOT23
(Top View)
5
1
5
1
VCC
WDI
VCC
WDI
RESET
GND
MR
RESET
2
3
2
3
GND
MR
4
4
AAT3512
AAT3510
AAT3511
AAT3517
5-lead SOT23
(Top View)
5-lead SOT23
(Top View)
5
1
5
1
VCC
WDI
RESET
GND
VCC
MR
RESET
GND
2
3
2
3
4
4
RESET
RESET
AAT3513
AAT3514
AAT3518
AAT3515
AAT3516
AAT3519
2
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Micropower µP Reset with Watchdog Timer
Absolute Maximum Ratings1
TA = 25°C, unless otherwise noted.
Symbol
Description
Max
Units
VCC
VCC to GND
-0.3 to 6
V
V
VMR, VWDI
MR, WDI to GND
-0.3 to VCC + 0.3
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
-0.3 to VCC + 0.3
VRESET
V
-0.3 to 6
20
IVCC, IMR, IWDI
IRESET
mA
mA
V/µs
°C
20
dVCC/dt
TJ
100
Operating Junction Temperature Range (-40°C to +150°C)
150
Thermal Information2
Symbol
Description
Value
Units
ΘJA
PD
Maximum Thermal Resistance
Maximum Power Dissipation
190
526
°C/W
mW
1. Stresses above those listed in Absolute Maximum Ratings may cause permanent damage to the device. Functional operation at condi-
tions other than the operating conditions specified is not implied. Only one Absolute Maximum Rating should be applied at any one time.
2. Mounted on an FR4 board.
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Micropower µP Reset with Watchdog Timer
Electrical Characteristics
VCC = 2.5V to 5.5V, TA = -40°C to +85°C1, unless otherwise noted. Typical values are at TA = 25°C.
Symbol Description
Conditions
Min
Typ
Max
Units
VCC
Operating Voltage Range
TA = -40°C to +85°C
AAT3510/1/2/3/4/7/8:
1
5.5
15
18
15
18
V
VCC = 3.6V
5
6
MR & WDI Unconnected VCC = 5.5V
ICC
Supply Current
µA
AAT3515/6/9:
MR Unconnected
TA = 25°C
VCC = 3.6V
VCC = 5.5V
VTHNOM-1.5% VTH VTHNOM+1.5%
VTHNOM-2.5% VTH VTHNOM+2.5%
VTH
TC
Reset Threshold Voltage
V
TA = -40 to +85°C
Reference Voltage
Temperature Coefficient
-40°C < TA < +85°C
±40
ppm/°C
AAT351xIGV-xx-A-x-T1
AAT351xIGV-xx-B-x-T1
AAT351xIGV-xx-C-x-T1
VCC Falling at 1mV/µs
1
1.4
28
2
Reset Active Timeout
Period
tRP
20
40
ms
µs
140
200
40
280
TRD
VCC to RESET Delay
Push/Pull RESET Output (AAT3510, 3512, 3513, 3514, 3515, 3516, 3518, 3519)
VCC ≥ 1.0V, ISINK = 50µA
VCC ≥ 1.2V, ISINK = 100µA
0.3
0.3
0.3
0.4
VOL
RESET Low Output Voltage
V
V
VCC ≥ 2.7V, ISINK = 1.2mA
VCC ≥ 4.5V, ISINK = 3.2mA
VCC ≥ 2.7V, ISOURCE = 500µA
VCC ≥ 4.5V, ISOURCE = 800µA
VCC ≥ 2.7V, ISINK = 1.2mA
VCC ≥ 4.5V, ISINK = 3.2mA
VCC ≥ 1.8V, ISOURCE = 150µA
0.8 x VCC
VCC - 1.5
VOH
RESET High Output Voltage
RESET Low Output Voltage
0.3
0.4
VOH
0.8 x VCC
0.8 x VCC
VCC - 1.5
V
RESET High Output Voltage VCC ≥ 2.7V, ISOURCE = 500µA
VCC ≥ 4.5V, ISOURCE = 800µA
Bidirectional RESET Output (AAT3511, 3514, 3516)
Transition Flip-Flop Setup
tS
400
ns
ns
V
Time2
VCC = 3.0V, CL = 120pF
333
333
666
666
VCC = 5.0V, CL = 200pF
VCC = 3.0V, CL = 250pF
VCC = 5.0V, CL = 400pF
tR
RESET Output Rise Time3
Active Pull-Up Enable
Threshold
VCC = 5.0V
0.4
4.2
0.65
VPTH
RESET Active Pull-Up
Current
VCC = 5.0V
20
mA
RESET Pull-Up Resistance
4.7
5.2
kΩ
1. Over-temperature limits are guaranteed by design, not production tested.
2. This is the minimum time RESET must be held low by an external pull-down source to set the active pull-up flip-flop.
3. Measured from RESET VOL to (0.8 x VCC), open circuit output.
4
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Micropower µP Reset with Watchdog Timer
Electrical Characteristics
VCC = 2.5V to 5.5V, TA = -40°C to +85ºC1, unless otherwise noted. Typical values are at TA = 25°C.
Symbol Description
Conditions
Min
Typ
Max
Units
Open-Drain RESET Output (AAT3517, 3518, 3519)
VCC ≥ 1.0V, ISINK = 50µA
VCC ≥ 1.2V, ISINK = 100µA
VCC ≥ 2.7V, ISINK = 1.2mA
VCC ≥ 4.5V, ISINK = 3.2mA
0.3
0.3
0.3
0.4
1.0
VOL
RESET Low Output Voltage
Reset Leakage Current
V
ID(OFF)
µA
ms
Watchdog Input (AAT3510, 3511, 3512, 3513, 3514, 3517, 3518)
AAT351xIGV-xx-x-A-T1
4.3
71
6.3
102
1.6
50
9.3
153
2.4
tWD
Watchdog Timeout Period
AAT351xIGV-xx-x-B-T1
AAT351xIGV-xx-x-C-T12
1.12
s
tWDI
VIL
WDI Minimum Pulse Width
WDI Input Threshold3
WDI Input Threshold3
VIL = 0.3 x VCC, VIH = 0.7 x VCC
ns
0.3 x VCC
VIH
0.8 x VCC
160
V
WDI = VCC, Time Average
VWDI = 0, Time Average
120
-15
IWDI
WDI Input Current4
µA
-20
Manual RESET Input (AAT3510, 3511, 3512, 3515, 3516, 3517, 3519)
VIL
MR Input Threshold
0.3 x VCC
V
MR Input Threshold
0.7 x VCC
MR Input Pulse Width
MR Glitch Rejection
1
µs
ns
kΩ
ns
VIH
100
52
MR Internal Pull-Up Resistance
MR to Reset Delay
TA = 25°C
CC = 5V
35
75
V
230
1. Over-temperature limits are guaranteed by design, not production tested.
2. Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518.
3. WDI is internally serviced within the watchdog period if WDI is left unconnected.
4. 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
VCC Falling to RESET Propagation
Delay vs. Temperature
10
9
160
VCC = 5V
8
7
6
5
4
3
2
1
0
140
VCC Falling at 1mV/µs
120
VRST - VCC = 100mV
100
80
60
40
20
0
VCC = 3V
VCC = 1V
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
Temperature (°C)
Temperature (°C)
Normalized Reset Timeout Period
vs. Temperature
Manual Reset to RESET Propagation
Delay vs. Temperature
1.05
500
450
400
350
300
250
200
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
VCC = 5V
-40
-20
0
20
40
60
80
100
-40
-20
0
20
40
60
80
100
Temperature (°C)
Temperature (°C)
Normalized Watchdog Timeout Period
vs. Temperature
Maximum VCC Transient Duration vs.
Reset Threshold Overdrive
80
1.05
1.04
1.03
1.02
1.01
1.00
0.99
0.98
0.97
0.96
0.95
70
60
50
40
30
20
10
0
VRST = 2.63V
-40
-20
0
20
40
60
80
100
10
100
1000
Temperature (°C)
Reset Threshold Overdrive (mV) VRST - VCC
6
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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
4.7kΩ
PULLUP
2V/div
74HC05
INPUT
4.7k
100pF
RESET,
ACTIVE
PULLUP
2V/div
+5V
74HC05
100pF
VCC
RESET
INPUT
MR GND
RESET,
INPUT
5V/div
Time (200ns/div)
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Micropower µP Reset with Watchdog Timer
Functional Block Diagram
VCC
RESET3
Reset
VCC
Generator
RESET4
VREF
MR1
Watchdog
Watchdog
Timer
Detector
WDI2
Timer
GND
1. MR pin available on AAT3510/1/2/5/6/7/9.
2. WDI pin avaliable on AAT3510/1/2/3/4/7/8.
3. RESET pin available on AAT3510/1/3/4/5/6/7/8/9.
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 Thresholds1 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) = 1600ms1
VDD Threshold Voltage
2.63: VTH(NOM) = 2.63V
2.70: VTH(NOM) = 2.7V
2.80: VTH(NOM) = 2.8V
2.93: VTH(NOM) = 2.93V
3.00: VTH(NOM) = 3.0V
3.08: VTH(NOM) = 3.08V
3.20: VTH(NOM) = 3.2V
3.30: VTH(NOM) = 3.3V
3.40: VTH(NOM) = 3.4V
3.50: VTH(NOM) = 3.5V
3.60: VTH(NOM) = 3.6V
3.70: VTH(NOM) = 3.7V
3.80: VTH(NOM) = 3.8V
3.90: VTH(NOM) = 3.9V
4.00: VTH(NOM) = 4.0V
4.10: VTH(NOM) = 4.1V
4.20: VTH(NOM) = 4.2V
4.38: VTH(NOM) = 4.3V
4.40: VTH(NOM) = 4.38V
4.50: VTH(NOM) = 4.5V
4.63: VTH(NOM) = 4.63V
4.70: VTH(NOM) = 4.7V
4.80: VTH(NOM) = 4.8V
4.90: VTH(NOM) = 4.9V
5.00: VTH(NOM) = 5.0V
1. Watchdog timeout period C is not available on AAT3513, AAT3514, and AAT3518.
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Micropower µP Reset with Watchdog Timer
Ordering Information
Package
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
SOT23-5
Marking1
Part Number (Tape and Reel)2
AAT3510IGV-2.63-C-C-T1
AAT3510IGV-2.93-C-C-T1
AAT3510IGV-3.08-C-C-T1
AAT3510IGV-4.38-C-C-T1
AAT3511IGV-2.63-C-C-T1
AAT3512IGV-2.63-A-C-T1
AAT3512IGV-2.63-C-C-T1
AAT3515IGV-2.63-C-T1
AAT3515IGV-2.93-B-T1
AAT3515IGV-2.93-C-T1
AAT3515IGV-3.08-C-T1
AAT3515IGV-4.38-C-T1
AAT3515IGV-4.63-C-T1
AAT3517IGV-2.63-C-C-T1
AAT3517IGV-2.8-B-C-T1
AAT3517IGV-2.93-C-C-T1
HVXYY
HUXYY
HGXYY
HHXYY
EWXYY
MYXYY
HEXYY
HIXYY
KLXYY
JNXYY
KMXYY
MFXYY
INXYY
LZXYY
IQXYY
All AnalogicTech products are offered in Pb-free packaging. The term “Pb-free” means
semiconductor products that are in compliance with current RoHS standards, including
the requirement that lead not exceed 0.1% by weight in homogeneous materials. For more
information, please visit our website at http://www.analogictech.com/pbfree.
1. XYY = date and assembly code.
2. Sample stock is generally held on part numbers listed in BOLD.
10
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Micropower µP Reset with Watchdog Timer
Package Information
SOT23-5
2.85 0.15
1.90 BSC
0.95
BSC
0.60 REF
0.15 0.07
GAUGE PLANE
0.075 0.075
0.45 0.15
0.10 BSC
0.60 REF
10° 5°
0.40 0.10
All dimensions in millimeters.
© Advanced Analogic Technologies, Inc.
AnalogicTech cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in an AnalogicTech product. No circuit patent licenses, copyrights, mask work 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.
Customers are advised 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. AnalogicTech
warrants performance of its semiconductor products to the specifications applicable at the time of sale in accordance with AnalogicTech’s standard warranty. Testing and other quality con-
trol 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.
Advanced Analogic Technologies, Inc.
830 E. Arques Avenue, Sunnyvale, CA 94085
Phone (408) 737-4600
Fax (408) 737-4611
3510.2006.03.1.7
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