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PDF AME8510AEEVAFE31 Data sheet ( Hoja de datos )
| Número de pieza | AME8510AEEVAFE31 | |
| Descripción | Micropower UP Watch Dog Timer | |
| Fabricantes | Analog Microelectronics | |
| Logotipo |  |
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AME, Inc.
AME8510 / 8520 / 8530
Micropower µP Watch Dog Timer
n General Description
The AME8510/8520/8530 family allows the user to cus-
tomize the CPU monitoring function without any external
components. The user has a large choice of reset volt-
age thresholds and output driver configurations, all of
which are preset at the factory. Each wafer is trimmed
to the customer's specifications.
These circuits will ignore fast negative going transients
on VDD. The state of the reset output is guaranteed to be
correct down to 1V.
After VDD crosses above a factory preset threshold,
the AME8510/8520/8530 assert a reset signal. After a
predetermined time (the “reset” interval) the reset is
deasserted. If VDD ever drops below the threshold voltage
a reset is asserted immediately. In addition to a supply
monitoring function the AME8510/8520 also monitor tran-
sitions at the watch dog (WDI) input. If a logic transition
does not occur at the WDI pin within a certain time inter-
val (the “watchdog” interval) then a reset is asserted. The
reset deasserts after the reset interval, as explained ear-
lier.
The AME8510/8530 can both assert a reset manually
by pulling the MRB input to ground.
Space saving SOT-25 packages and micropower qui-
escent current make this family a natural for portable
battery powered equipment.
n Features
l Small packages: SOT-25
l 7 voltage threshold options
l Tight voltage threshold tolerance ---±1.50%
l 12 output driver configuration options
l Wide temperature range -------- -40oC to 85oC
l Low temperature coefficient --- 100ppm/o(max)
l Low quiescent current < 3.0µA
l 3 bonding options
n Applications
l Motherboards
l Computer peripherals
l Portable electronics
l Applications using CPUs
l Consumer electronics
n Pin Configuration
SOT-25
Top View
54
AME8510
123
AME8510
1. Reset/ResetB
2. GND
3. MRB
4. WDI
5. VDD
SOT-25
Top View
54
AME8520
123
AME8520
1. Reset/ResetB
2. GND
3. ResetB/Reset
4. WDI
5. V
DD
SOT-25
Top View
54
AME8530
123
AME8530
1. Reset/ResetB
2. GND
3. ResetB/Reset
4. MRB
5. V
DD
1
1 page  
AME, Inc.
AME8510 / 8520 / 8530
n Ordering Information
AME8530 x x x x x x x x
Micropower µP Watch Dog Timer
Special Feature
VDD Threshold Voltage (VTH)
Reset Time (TD2NOM)
Output Driver Option
Number of Pins
Package Type
Operating Temperature Range
Pin Configuration
Pin
Configuration
Operating
Temperature
Range
Number
Package of
Output Driver
Reset Time
Type
Pins
Option
(TD2NOM)
Watch
Dog
Interval
VDD
Threshold
Voltage (VTH)
Special
Feature
A: 1. Reset/
ResetB
2. GND
3. Reset/
ResetB
4. MRB
5. VDD
E: -40OC to 85OC E: SOT-2X
V: 5
PIN1
F: TD= 210ms E: 1760 ms 22: VTH= 2.19V L: Low profile
A: RESETB/PP
X: without 23: VTH= 2.32V Y: Lead free &
B: RESETB/OD
WDI 26: VTH= 2.63V Low profile
C: RESET/PP
D: RESET/OD
option 29: VTH= 2.93V Z: Lead free
31: VTH= 3.08V
E: RESETB/PP
44: VTH= 4.38V
F: RESETB/PP
46: VTH= 4.63V
G: RESETB/OD
H: RESETB/OD
I: RESET/PP
J: RESET/PP
K: RESET/OD
L: RESET/OD
PIN3
E: RESET/PP
F: RESET/OD
G: RESET/PP
H: RESET/OD
I: RESETB/PP
J: RESETB/OD
K: RESETB/PP
L: RESETB/OD
(RESET = Act ive High)
(RESETB = Active Low)
(PP = Push pull out )
(OD = Open drain out put
polarit y)
5
5 Page 
AME, Inc.
AME8510 / 8520 / 8530
140
120
100
80
60
40
20
0
0.01
Glitch Rejection
0.1
Glitch Amplitude (V)
1
2.35
2.30
2.25
2.20
2.15
2.10
-45
I vs. Temperature
DD
Vth=2.63V
-5 25 55 85
Temperature (oC)
115
0.265
0.260
0.255
0.250
0.245
0.240
0.235
0.230
0.225
0.220
-45
Reset VOL vs. Temperature
Vth=2.63V
-5 25 55 85
Temperature (oC)
115
Micropower µP Watch Dog Timer
Reset Time vs. Temperature
220
215
210
205 Vth=2.63V
200
195
190
-45
-5 25 55 85
Temperature (oC)
115
2.650
2.648
2.646
2.644
2.642
2.640
2.638
2.636
2.634
2.632
2.630
-45
Reset V vs. Temperature
TH
Vth=2.63V
-5 25 55 85
Temperature (oC)
115
11
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| PDF Descargar | [ Datasheet AME8510AEEVAFE31.PDF ] | |
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