AME8530 - AME, Inc.

AME
AME8510 / 8520 / 8530
n General Description
Micropower µP Watch Dog Timer
n Applications
The AME8510/8520/8530 family allows the user to customize the CPU monitoring function without any external
components. The user has a large choice of reset voltage 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 VIN. The state of the reset output is guaranteed to be
correct down to 1V.
l
l
l
l
l
n Typical Application
IN
After VIN 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 VIN ever drops below the threshold voltage
a reset is asserted immediately. In addition to a supply
monitoring function the AME8510/8520 also monitor transitions at the watch dog input (WDI). If a logic transition
does not occur at the WDI pin within a certain time interval (the “watchdog”interval) then a reset is asserted. The
reset deasserts after the reset interval, as explained earlier.
The AME8510/8530 can both assert a reset manually
by pulling the MRB input to ground.
Space saving SOT-25 packages and micropower quiescent current make this family a natural for portable battery powered equipment.
Motherboards
Computer peripherals
Portable electronics
Applications using CPUs
Consumer electronics
WDI
GND
MPU, DSP
I/O
GND
IN
R2
Oscillator
RESET
R1
R3
l 12 Output Driver Configuration Options
l All AME’ s Lead Free Products Meet RoHS
RESET
n Function Diagram
l Tight Voltage Threshold Tolerance -- ±1.50%
l 3 Bonding Options
RESET
* REXT for open-drain version only
l 7 Voltage Threshold Options
l Quiescent Current < 3.0µA
RESET
MRB
GND
IN
RESET
AME
8510/20/30
n Features
l Wide Temperature Range -- -40oC to +85oC
*
IN
MRB( 1)
Voltage
Reference
Reset
Logic
+ Timer
RESET
Filter
GND
WDI(2)
Voltage
Reference
Watchdong Logic
+ Timer
Standards
1. AME8510 / 8530
2. AME8510 / 8520
Rev.I.13
1
AME
AME8510 / 8520 / 8530
Micropower µP Watch Dog Timer
n Pin Configuration
SOT-25
Top View
5
SOT-25
Top View
4
AME8510
1
2
3
AME8510
1. Reset/ResetB
2. GND
3. MRB
4. WDI
5. IN
* Die Attach:
Conductive Epoxy
5
4
AME8520
1
2
3
AME8520
1. Reset/ResetB
2. GND
3. ResetB/Reset
4. WDI
5. IN
* Die Attach:
Conductive Epoxy
SOT-25
Top View
5
4
AME8530
1
2
2
3
AME8530
1. Reset/ResetB
2. GND
3. ResetB/Reset/NC
4. MRB
5. IN
* Die Attach:
Conductive Epoxy
Rev.I.13
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Pin Description
Pin Number
8510 8520 8530
Pin Name
1
1
1
RESET/
RESETB
2
2
2
GND
N/A
3
3
RESET/
RESETB
Pin Description
This pin may be either RESET or RESETB. RESETB is active low. In the
case of the AME8520 and AME8530 this pin will always be the opposite
polarity from pin 3. This pin can be push/pull or open drain.
Ground
This pin may be either RESETB or RESET. RESET is active high. In the
case of the AME8520 and AME8530 this pin will always be the opposite
polarity from pin 1. This pin can be either push/pull or open drain.
3
N/A
4
MRB
Manual Reset. Active low. Pulling this pin low forces a reset. After a low to
high transition reset remains asserted for exactly one reset timeout period.
This pin is internally pulled high. If this function is unused then float this pin
or tie it to VIN.
4
4
N/A
WDI
Watch Dog Input. Any transition on this pin will reset the watch dog timer. If
this pin remains high or low for longer than the watch dog interval then a
reset is asserted. Float or tristate this pin to disable the watch dog feature.
IN
Positive power supply. A reset is asserted after this voltage drops below a
predetermined level. After VIN rises above that level reset remains asserted
until the end of the reset timeout period.
5
Rev.I.13
5
5
3
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Ordering Information
AME8510 x x x x x x x xx x
Special Feature
VIN Threshold Voltage (VTH)
Watch Dog Interval
Reset Time (TD2NOM)
Output Driver Option
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Pin
Configuration
A: 1. Reset/
ResetB
2. GND
3. MRB
4. WDI
5. IN
(SOT-25)
Operating
Ambient
Temperature
Range
Package Number
Type
of
Pins
E: -40OC to +85OC E: SOT-2X
V: 5
Output Driver
Option
Reset
Time
(TD2NOM)
A: PIN1_RESETB/PP D: 30ms
B: Pin1_RESETB/OD E: 150ms
C: PIN1_RESET/PP
F: 210ms
D: Pin1_RESET/OD
Watch
VIN Threshold
Dog
Voltage (VTH)
Interval
Special
Feature
D: 1000 ms 22: VTH= 2.19V Z: Lead free
E: 1761 ms 23: VTH= 2.32V
26: VTH= 2.63V
29: VTH= 2.93V
31: VTH= 3.08V
42: VTH= 4.20V
44: VTH= 4.38V
45: VTH= 4.50V
46: VTH= 4.63V
(RESET = Active High)
(RESETB = Active Low)
(PP = Push pull out)
(OD = Open drain output )
4
Rev.I.13
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Ordering Information
AME8520 x x x x x x x xx x
Special Feature
VIN Threshold Voltage (VTH)
Watch Dog Interval
Reset Time (TD2NOM)
Output Driver Option
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Pin
Configuration
A: 1. Reset/
(SOT-25)
ResetB
2. GND
3. Reset/
ResetB
4. WDI
5. IN
Operating
Ambient
Temperature
Range
E: -40OC to +85OC
Package Number
Type
of
Pins
E: SOT-2X
V: 5
Output Driver
Option
Reset
Time
(TD2NOM)
E: PIN1_RESETB/PP D: 30ms
PIN3_RESET/PP E: 150ms
F: PIN1_RESETB/PP F: 210ms
PIN3_RESET/OD
G: PIN1_RESETB/OD
PIN3_RESET/PP
H: PIN1_RESETB/OD
PIN3_RESET/OD
I: PIN1_RESET/PP
PIN3_RESETB/PP
J: PIN1_RESET/PP
PIN3_RESETB/OD
K: PIN1_RESET/OD
PIN3_RESETB/PP
L: PIN1_RESET/OD
PIN3_RESETB/OD
Watch
VIN Threshold
Dog
Voltage (VTH)
Interval
Special
Feature
E: 1761 ms 22: VTH= 2.19V Z: Lead free
23: VTH= 2.32V
26: VTH= 2.63V
29: VTH= 2.93V
31: VTH= 3.08V
42: VTH= 4.20V
44: VTH= 4.38V
45: VTH= 4.50V
46: VTH= 4.63V
(RESET = Active High)
(RESETB = Active Low)
(PP = Push pull out)
(OD = Open drain output )
Rev.I.13
5
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Ordering Information
AME8530 x x x x x x x xx x
Special Feature
VIN Threshold Voltage (VTH)
Watch Dog Interval
Reset Time (TD2NOM)
Output Driver Option
Number of Pins
Package Type
Operating Ambient Temperature Range
Pin Configuration
Pin
Configuration
A: 1. Reset/
(SOT-25)
ResetB
2. GND
3. Reset/
ResetB
4. MRB
5. IN
Operating
Ambient
Temperature
Range
E: -40OC to +85OC
Package Number
Type
of
Pins
E: SOT-2X
V: 5
Output Driver
Option
A: PIN1_RESETB/PP
PIN3_NC
B: PIN1_RESETB/OD
PIN3_NC
C: PIN1_RESET/PP
PIN3_NC
D: PIN1_RESET/OD
PIN3_NC
E: PIN1_RESETB/PP
PIN3_RESET/PP
F: PIN1_RESETB/PP
PIN3_RESET/OD
G: PIN1_RESETB/OD
PIN3_RESET/PP
H: PIN1_RESETB/OD
PIN3_RESET/OD
I: PIN1_RESET/PP
PIN3_RESETB/PP
J: PIN1_RESET/PP
PIN3_RESETB/OD
K: PIN1_RESET/OD
PIN3_RESETB/PP
L: PIN1_RESET/OD
PIN3_RESETB/OD
Reset Time
(TD2NOM)
D: 30ms
E: 150ms
F: 210ms
Watch
VIN Threshold
Dog
Voltage (VTH)
Interval
X: without
WDI
option
Special
Feature
22: VTH= 2.19V Z: Lead free
23: VTH= 2.32V
26: VTH= 2.63V
29: VTH= 2.93V
31: VTH= 3.08V
42: VTH= 4.20V
44: VTH= 4.38V
45: VTH= 4.50V
46: VTH= 4.63V
(RESET = Active High)
(RESETB = Active Low)
(PP = Push pull out)
(OD = Open drain output )
6
Rev.I.13
AME
AME8510 / 8520 / 8530
Micropower µP Watch Dog Timer
n Ordering Information
Marking*
VTH Voltage
Package
Operating Ambient
Temperature Range
AME8510AEEVAFE22
AWYww
2.19V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE22Z
AWYww
2.19V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE26
ATGww
2.63V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE26Z
ATGww
2.63V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE29
ATXww
2.93V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE29Z
ATXww
2.93V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE31
ASMww
3.08V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE31Z
ASMww
3.08V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE46
BACww
4.63V
SOT-25
- 40oC to +85oC
AME8510AEEVAFE46Z
BACww
4.63V
SOT-25
- 40oC to +85oC
AME8510AEEVBDD29
ARXww
2.93V
SOT-25
- 40oC to +85oC
AME8510AEEVBDD29Z
ARXww
2.93V
SOT-25
- 40oC to +85oC
AME8510AEEVBFE22Z
CNXww
2.19V
SOT-25
- 40oC to +85oC
AME8510AEEVBFE23
BCWww
2.32V
SOT-25
- 40oC to +85oC
AME8510AEEVBFE23Z
BCWww
2.32V
SOT-25
- 40oC to +85oC
AME8510AEEVBFE26Z
BTNww
2.63V
SOT-25
- 40oC to +85oC
AME8510AEEVBFE29Z
BTLww
2.93V
SOT-25
- 40oC to +85oC
AME8510AEEVBFE46
BCXww
4.63V
SOT-25
- 40oC to +85oC
AME8520AEEVEED46Z
BDAww
4.63V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE22
AWSww
2.19V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE26Z
ATCww
2.63V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE29
ATVww
2.93V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE31Z
ATLww
3.08V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE42
ATKww
4.20V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE42Z
ATKww
4.20V
SOT-25
- 40oC to +85oC
Part Number
Note: ww represents the date code and pls refer to Date Code Rule before Package Dimension.
* A line on top of the first letter represents lead free plating such as AWYww.
Please consult AME sales office or authorized Rep./Distributor for output voltage and package type availability.
Rev.I.13
7
AME
AME8510 / 8520 / 8530
Micropower µP Watch Dog Timer
n Ordering Information (Contd.)
Marking*
VTH Voltage
Package
Operating Ambient
Temperature Range
AME8520AEEVEFE44
ATWww
4.38V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE44Z
ATWww
4.38V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE45
ATJww
4.50V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE45Z
ATJww
4.50V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE46
BADww
4.63V
SOT-25
- 40oC to +85oC
AME8520AEEVEFE46Z
BADww
4.63V
SOT-25
- 40oC to +85oC
AME8530AEEVAFX23Z
CEBww
2.32V
SOT-25
- 40oC to +85oC
AME8530AEEVAFX29
AVEww
2.93V
SOT-25
- 40oC to +85oC
AME8530AEEVAFX29Z
AVEww
2.93V
SOT-25
- 40oC to +85oC
AME8530AEEVAFX31
AVFww
3.08V
SOT-25
- 40oC to +85oC
AME8530AEEVAFX31Z
AVFww
3.08V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX26
AWWww
2.63V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX26Z
AWWww
2.63V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX29
AUSww
2.93V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX29Z
AUSww
2.93V
SOT-25
- 40oC to +85oC
AME8530AEEVGFX29Z
BKQww
2.93V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX31
ATNww
3.08V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX31Z
ATNww
3.08V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX45
ATMww
4.50V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX45Z
ATMww
4.50V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX46
BAEww
4.63V
SOT-25
- 40oC to +85oC
AME8530AEEVEFX46Z
BAEww
4.63V
SOT-25
- 40oC to +85oC
Part Number
8
Rev.I.13
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Absolute Maximum Ratings
Parameter
Maximum
Unit
6
V
Supply Voltage
B*
ESD Classification
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
* HBM B: 2000V~3999V
n Recommended Operating Conditions
Parameter
Symbol
Rating
Unit
Ambient Temperature Range
TA
- 40 to +85
o
C
Junction Temperature Range
TJ
- 40 to +125
o
C
Storage Temperature Range
TSTG
- 65 to +150
o
C
n Thermal Information
Parameter
Package
Die Attach
Thermal Resistance*
(Junction to Case)
Thermal Resistance
(Junction to Ambient)
Symbol
Maximum
θJC
81
Unit
o
SOT-25
Conductive Epoxy
Internal Power Dissipation
θJA
260
PD
400
C/W
mW
Maximum Junction Temperature
150
o
C
Solder Iron (10 Sec)**
350
o
C
* Measure θJC on center of molding compound if IC has no tab.
** MIL-STD-202G 210F
Rev.I.13
9
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Electrical Specifications
TA = 25OC unless otherwise noted
Parameter
VIN Range
Supply Current
Reset Threshold*
Symbol
Test Condition
VRANGE
IIN
VOH
WDI and MRB unconnected
ResetB Output Voltage Low
VOL
VIN>VTH max
o
VIN<VTH min
TD1
VIN = VTH - 100mV
Reset Timeout Period*
TD2
TJ= -40~+85 C
Watch Dog Timeout Period*
TWD
WDI Pulse Width
TWDI
WDIIL
Version D
Version E
Version F
10.0
µA
VTH
+1.5%
V
Version E
V
µS
15
80
140
30
150
210
50
230
280
mS
1120
1760 2400
mS
50
nS
0.7
V
VIN = VTH x 1.2
0.8VIN
WDI = 0V
IIH
WDI = VIN = 5.0V
-15
V
-8
8
µA
V
MRBIH
0.8VIN
TWMRB
1
TDMRB
MRB Pull Up Resistance
15
0.7
VIN = VTH x 1.2
MRB Noise Immunity
(pulse width with no reset)
MRB to Reset Delay
V
40
IIL
MRBIL
5.5
0.5
o
WDIIH
MRB Input Threshold
Units
V
TJ= -40~+85 C
o
Max
0.8VIN
ISNK=1.2mA,
VIN to Reset Delay
WDI Input Threshold
ISOURCE=0.5mA,
TJ= -40~+85 C
VIN>VTH max
Reset Output Voltage Low
MRB Pulse Width
3
VTH
-1.5%
VIN<VTH min
Reset Output Voltage Hgh
Typ
1
VTH
ResetB Output Voltage Hgh
WDI Input Current
Min
80
µS
100
nS
500
nS
120
KΩ
* See the chart on page 3 for available values of this parameter.
10
Rev.I.13
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Detailed Description
Manual Reset Input
The AME8510/8520/8530 are designed to interface with
the reset input of a microprocessor and to prevent CPU
execution errors due to power up, power down, and other
power supply errors. The AME8510/8520 also monitor
the CPU health by checking for signal transitions from
the CPU at the WDI input.
The AME8510 and AME8530 feature a manual reset
feature (MRB). A logic low on the MRB pin asserts a
reset. The reset remains asserted as long as the MRB
pin remains low. After the MRB pin transitions to a high
state the reset remains asserted for the prescribed reset
interval (TD2). The MRB pin is internally pulled up to VIN
by a 100KΩ resistor. It is internally debounced to reject
switching transients.
Reset Output
Each output pin in the family can be configured to be
either push/pull or open drain. In addition each output
may be either active high or active low with the condition
that parts with two outputs must have opposite polarities. Active high reset outputs are denoted as RESET.
Active low reset outputs are denoted as RESETB. The
selection guide on page 3 of this data sheet shows all
possible combinations of output driver configuration.
A reset will be asserted if any of three things happen:
1) VIN drops below the threshold (VTH)
2) The MRB pin is pulled low.
3) The WDI pin does not detect a transition
within the watch dog interval (TWD).
The reset will remain asserted for the prescribed reset
interval after:
1) VIN rises above the threshold (VTH)
2) MRB goes high
3) The watch dog timer has timed out causing
the reset to assert.
TD2
TD2
TD1
50%
TD1
50%
If the watchdog input is left unconnected or is connected to a tri-stated buffer the watchdog function is disabled. As soon as the WDI input is driven either low or
high the watchdog function resumes with the watchdog
timer set to zero.
VTH
50%
RESETB
TD2
TWD
TD2
50%
WDI
Reset Timing Diagram
Rev.I.13
The AME8510 and AME8520 are equipped with a watchdog input (WDI). If the microprocessor does not produce
a valid logic edge at the the watchdog input (WDI) within
the prescribed watchdog interval (TWD) then a reset asserts. The reset remains asserted for the required reset
interval (TD2) At the end of the reset interval the reset is
deasserted and the watchdog interval timer starts again
from zero.
VIN
VIN
RESETB
Watchdog Input
VTH
VRelease
RESET
The MRB pin is ESD protected by diodes connected to
VIN and GND. So the MRB pin should never be driven
higher than VIN or lower than GND.
Watchdog Timing Diagram
11
AME
AME8510 / 8520 / 8530
Micropower µP Watch Dog Timer
n Detailed Description
Watchdog Input Current
The watchdog input pin (WDI) typically sources/sinks
8µA when driven high or low. So from a power dissipation
point of view the duty cycle of the waveform at WDI is
unimportant. When the WDI pin is floating or tri-stated
the power supply current falls to less than 3.0µA.
Glitch Rejection
The AME8510/8520/8530 family will reject negative going transients on the VIN line to some extent. The smaller
the duration of the transient the larger its amplitude may
be without triggering a reset. The”Glitch Rejection”chart
in the graphs section of this datasheet shows the relation
between glitch amplitude and allowable glitch duration to
avoid unintended resets.
Accurate Output State at Low VIN
With VIN voltage on the order of the MOS transistor
threshold (<1.0V) the outputs of the AME8510/8520/8530
may become undefined. For parts with active low output
(RESETB) a resistor placed between RESETB and GND
on the order of 100KΩ will ensure that the RESETB output stays low when VIN is lower than the MOS transistor
threshold voltage of the part. In a like manner a resistor
on the order of 100KΩ when placed between RESET and
VIN will ensure parts with active high output (RESET) will
remain high when VIN is lower than the threshold voltage
of the part.
12
Rev.I.13
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Characterization Curve
Reset Time vs. Temperature
220
120
215
100
Reset Time (mS)
Glitch Duration (µ
µ S)
Glitch Rejection
140
80
60
40
VTH=2.63V
205
200
195
20
0
210
0.01
0.1
190
-45
1
-5
25
55
85
115
Temperature (oC)
Glitch Amplitude (V)
IIN vs. Temperature
Reset VTH vs. Temperature
2.35
2.650
2.30
2.646
2.644
Reset VTH (V)
Supply Current @ 5V (uA)
2.648
2.642
2.25
2.640
VTH=2.63V
2.20
2.638
VTH=2.63V
2.636
2.634
2.15
2.632
2.10
-45
-5
25
55
85
115
2.630
-45
-5
25
55
85
115
Temperature (oC)
Temperature (oC)
Reset VOL vs. Temperature
0.265
Reset VOL @ 0.8mA (V)
0.260
0.255
0.250
0.245
0.240
0.235
VTH=2.63V
0.230
0.225
0.220
-45
-5
25
55
85
115
Temperature (oC)
Rev.I.13
13
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Date Code Rule
Marking
Date Code
Year
A
A
A
W
W
xxx0
A
A
A
W
W
xxx1
A
A
A
W
W
xxx2
A
A
A
W
W
xxx3
A
A
A
W
W
xxx4
A
A
A
W
W
xxx5
A
A
A
W
W
xxx6
A
A
A
W
W
xxx7
A
A
A
W
W
xxx8
A
A
A
W
W
xxx9
n Tape and Reel Dimension
SOT-25
P
W
AME
AME
PIN 1
Carrier Tape, Number of Components Per Reel and Reel Size
14
Package
Carrier Width (W)
Pitch (P)
Part Per Full Reel
Reel Size
SOT-25
8.0±0.1 mm
4.0±0.1 mm
3000pcs
180±1 mm
Rev.I.13
AME
Micropower µP Watch Dog Timer
AME8510 / 8520 / 8530
n Package Dimension
SOT-25
Top View
Side View
D
E
H
L
PIN1
S1
e
A1
A
Front View
b
Lead Pattern Drawing
1.00 BSC
0.70 BSC
Note:
2.40 BSC
1. Lead pattern unit description:
BSC: Basic. Represents theoretical exact dimension or
dimension target.
2. Dimensions in Millimeters.
3. General tolerance +0.05mm unless otherwise specified.
0.95 BSC
0.95 BSC
1.90 BSC
Rev.I.13
15
www.ame.com.tw
E-Mail: s[email protected]
Life Support Policy:
These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president
of AME, Inc.
AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and
advises its customers to obtain the latest version of relevant information.
 AME, Inc. , July 2014
Document: 2007-DS8510/8520/8530-I.13
Corporate Headquarter
AME, Inc.
8F, 12, WenHu St., Nei-Hu
Taipei 114, Taiwan .
Tel: 886 2 2627-8687
Fax: 886 2 2659-2989