AME, Inc.
1
AME8500 / 8501 µµ
µµ
µProcessor Supervisory
l Small packages: SOT-23, SOT-89
l 1 1 voltage threshold options
l Tight voltage threshold tolerance ---±1.50%
l 5 reset interval options
l 4 output configuration options
l Wide temperature range -------- -40oC to 85oC
l Low temperature coefficient --- 100ppm/oC(max)
l Low quiescent current < 3.0µA
l Thermal shutdown option (AME8501)
The AME8500 family allows the user to customize the
CPU reset function without any external components.
The user has a large choice of reset voltage thresholds,
reset time intervals, and output driver configurations, all
of which are preset at the factory . Each wafer is trimmed
to the customer's specifications.
These circuits monitor the power supply voltage of µP
based systems. When the power supply voltage drops
below the voltage threshold a reset is asserted immedi-
ately (within an interval TD1). The reset remains asserted
after the supply voltage rises above the voltage threshold
for a time interval, TD2 . The reset output may be either
active high (RESET) or active low (RESETB). The reset
output may be configured as either push/pull or open
drain. The state of the reset output is guaranteed to be
correct for supply voltages greater than 1V .
The AME8501 includes all the above functionality plus
an overtemperature shutdown function. When the ambi-
ent temperature exceeds 80oC a reset is asserted and
remains asserted until the temperature falls below 60oC.
Space saving SOT23 packages and micropower qui-
escent current (<3.0µA) make this family a natural for
portable battery powered equipment.
n General Description
n Features
n Typical Operating Circuit
Note: * External pull-up resistor is required if open-
drain output is used. 10 kΩ is recommended.
n Block Diagram
l Portable electronics
l Power supplies
l Computer peripherals
l Data acquisition systems
l Applications using CPUs
l Consumer electronics
n Applications
AME8500 with Push-Pull RESET
RESET
VDD
GND
R1
R2
I1
VREF
P1
N1
Delay
VDD
GND
R1
R2
I1
VREF
P1
N1
RESET
Delay
AME8500 with Push-Pull RESET
Processor
VCC
GND
RESET
Input
AME8500
VCC
GND
RESET / RESET
2
3
*
AME, Inc.
2
µµ
µµ
µProcessor Supervisory
AME8500 / 8501
n Block Diagram (contd.)
AME8500AEET
AME8501AEET
1. GND
2. Reset/ResetB
3. VDD
SOT-23
Top View
12
3
AME8500
n Pin Configuration
SOT-23
Top View
12
3
AME8500
SOT-23
Top View
AME8500CEET
AME8501CEET
1. Reset/ResetB
2. VDD
3. GND
12
3
AME8500
AME8500BEET
AME8501BEET
1. Reset/ResetB
2. GND
3. VDD
AME8500 with Open-Drain RESET
Delay
VDD
GND
R1
R2
I1
VREF N1
RESET
AME8500 with Open-Drain RESET
RESET
Delay
VDD
GND
R1
R2
I1
VREF N1
AME8500AEET
AME8501AEET
1. GND
2. Reset/ResetB
3. VDD
SOT-23-L
Top View
12
3
AME8500
AME, Inc.
3
AME8500 / 8501 µµ
µµ
µProcessor Supervisory
n Pin Configuration (contd.)
SOT-89
Top View
SOT-89
Top View
SOT-89
Top View
AME8500AEFT
AME8501AEFT
1. GND
2. VDD
3. Reset/ResetB
AME8500CEFT
AME8501CEFT
1. VDD
2. GND
3. Reset/ResetB
AME8500BEFT
AME8501BEFT
1. Reset/ResetB
2. VDD
3. GND
132
AME8500
132
AME8500
132
AME8500
n Pin Description
Pin Na m e Pin De sc r iption
GND Ground
RESETB/RESET This pin can be ordered as RESET or RESETB. RESET is active high.
RE S E TB i s ac ti ve l ow. It is also avail able wi t h an open drain or pushpul l
output.
VDD
P osi tive power suppl y . A res et i s assert ed aft er t hi s volt age drops bel ow
a predeterm ined l evel . A ft er VDD rises above t hat l evel t he res et out put
remai ns ass ert ed unt i l t he end of the res et t i m eout period.
SOT-23-L
Top View
AME8500BEET
AME8501BEET
1. Reset/ResetB
2. GND
3. VDD
12
3
AME8500
SOT-23-L
Top View
AME8500CEET
AME8501CEET
1. Reset/ResetB
2. VDD
3. GND
12
3
AME8500
SOT-25
Top View
AME8500BEEV
AME8501BEEV
1. Reset/ResetB
2. VDD
3. GND
4. N/C
5. N/C
132
54
AME8500
AME, Inc.
4
µµ
µµ
µProcessor Supervisory
AME8500 / 8501
n Ordering Information
Operating Temperature Range
Number of Pins
Package Type
Pin Configuration
Special Feature
AME8501 x x x x x x x x
Output Driver Option
Reset Time (TD2NOM)
VDD Threshold Voltage (VTH)
AME8500 x x x x x x x x
A 1. GND E :-40OC to 85OCE:SOT-2X T: 3 A: RESETB /PP A:1.5 ms 15
:
V TH= 1. 5V L: Low profi l e
(SOT-23) 2. Reset/ F:SOT-89 V: 5 B: RE SETB /OD D:30 ms 16
:
V TH= 1. 6V Y :
Res etB C: RESET/ PP E:150 ms 18
:
V TH= 1. 8V
3. V DD D: RE SET/ OD F: 210 ms 19
:
V TH= 1. 9V Z: Lead free
B 1. Res et / 20
:
V TH= 2. 0V
(SOT-23) Res etB 21
:
V TH= 2. 1V
2. GND 22
:
V TH= 2. 2V
3. V DD 23
:
V TH= 2. 32V
C 1. Rese t/ 2 4
:
V TH= 2. 4V
(SOT-23) Res etB 26
:
V TH= 2. 63V
2. V DD 27
:
V TH= 2. 7V
3. GND 28
:
V TH= 2. 8V
A 1. GND 29
:
V TH= 2. 93V
(SOT-89) 2. V DD 31
:
V TH= 3. 08V
3. Res et / 40
:
V TH= 4. 0V
Res etB 42
:
V TH= 4. 2V
B 1. Res et / 44
:
V TH= 4. 38V
(SOT-89) Res etB 46
:
V TH= 4. 63V
2. V DD
3. GND
C 1. VDD
(SOT-89) 2. GND
3. Reset/
Res etB
Lead free &
Low profi l e
Output Drive r
Option
Characteristic
of RES ET or
RES ETB pin
Special
Feature
Reset
Time
(TD2NOM)
VDD
Threshold
Voltage (VTH)
Package
Type
Number
of
Pins
Operating
Temperature
Range
Pin
Configuration
(PP = Push pull out)
(RESET = Activ e High)
(RESETB = Active Lo w)
(OD = Open drain output
p olarity)
AME, Inc.
5
AME8500 / 8501 µµ
µµ
µProcessor Supervisory
n Ordering Information
Part Number Marking VTH Vol t age Package O perat i ng Tem p. Range
AME8500AEETAA21 ASVww 2.10V SOT-23 - 40oC to + 85oC
AME8500AEETAD20 ALXww 2.00V SOT-23 - 40oC to + 85oC
AME8500AEETAE20 AUAww 2.00V SOT-23 - 40oC to + 85oC
AME8500AEETAE21 AVGww 2.10V SOT-23 - 40oC to + 85oC
AME8500AEETAE26 ASJww 2.63V SOT-23 - 40oC to + 85oC
AME8500AEETAE26L ASJww 2.63V SOT-23 - 4 0oC to + 85oC
AME8500AEETAE29 ALYww 2.93V SOT-23 - 40oC to + 85oC
AME8500AEETAE31 AUBww 3.08V SOT-23 - 40oC to + 85oC
AME8500AEETAE46 ATSww 4.63V SOT-23 - 40oC to + 85oC
AME8500AEETAF15 ATDww 1.50V SOT-23 - 4 0oC to + 85oC
AME8500AEETAF16 ATEww 1.60V SOT-23 - 40oC to + 85oC
AME8500AEETAF21 ASKww 2.10V SOT-23 - 4 0oC to + 85oC
AME8500AEETAF23 ATTww 2.32V SOT-23 - 40oC to + 85oC
AME8500AEETAF26 AMPww 2.63V SOT-23 - 40oC to + 85oC
AME8500AEETAF27 ATRww 2.70V SOT-23 - 4 0oC to + 85oC
AME8500AEETAF29 AMOww 2.93V SOT-23 - 4 0oC to + 85oC
AME8500AEETAF31 ASAww 3.08V SOT-23 - 4 0oC to + 85oC
AME8500AEETAF40 ASBww 4.00V SOT-23 - 4 0oC to + 85oC
AME8500AEETAF44 ARNww 4.38V SOT-23 - 40oC to + 85oC
AME8500AEETAF46 ARKww 4.63V SOT-23 - 40oC to + 85oC
AME8500AEETBF31 AUTww 3.08V SOT-23 - 40oC to + 85oC
AME8500AEETBF46 AUUww 4.63V SOT-23 - 40oC to + 85oC
AME8500AEETCA21 ASWww 2.10V SOT-23 - 40oC to + 85oC
AME8500AEETCA27 AVBww 2.70V SOT-23 - 40oC to + 85oC
AME8500AEETCA46 AVCww 4.63V SOT-23 - 4 0oC to + 85oC
AME8500AEETCD20 ALZww 2.00V SOT-23 - 40oC to + 85oC
AME8500AEETCF21 ATYww 2.10V SOT-23 - 40oC to + 85oC
AME8500AEETCF29 ALVww 2.93V SOT-23 - 40oC to + 85oC
AME8500AEETCF31 ASUww 3.08V SOT-23 - 4 0oC to + 85oC
AME, Inc.
6
µµ
µµ
µProcessor Supervisory
AME8500 / 8501
n Ordering Information (contd.)
Part Number Marking VTH Vol t age Package O perat i ng Tem p. Range
AME8500AEETCF46 ARJww 4.63V SOT-23 - 4 0oC to + 85oC
AME8500AEETDF46 ARIww 4.63V SOT-23 - 4 0oC to + 85oC
AME8500AEFTAA21 A8500A
AA21ww 2.10V SOT-89 - 4 0oC to + 85oC
AME8500AEFTAF27 A8500A
AF27ww 2.70V SOT-89 - 40oC to + 85oC
AME8500AEFTCA21 A8500A
CA21ww 2.10V SOT-89 - 40oC to + 85oC
AME8500AEFTDA21 A8500A
DA21ww 2.10V SOT-89 - 40oC to + 85oC
AME8500BEETAA21 ARTww 2.10V SOT-23 - 4 0oC to + 85oC
AME8500BEETAA27 ARMww 2.70V SOT-23 - 4 0oC to + 85oC
AME8500BEETAA28 ASRww 2.80V SOT-23 - 40oC to + 85oC
AME8500BEETAA29 ARZww 2.93V SOT-23 - 4 0oC to + 85oC
AME8500BEETAF27 AUCww 2.70V SOT-23 - 4 0oC to + 85oC
AME8500BEETAF29 AUVww 2.93V SOT-23 - 40oC to + 85oC
AME8500BEETAF31 ATOww 3.08V SOT-23 - 40oC to + 85oC
AME8500BEETAF40 ATQww 4.00V SOT-23 - 40oC to + 85oC
AME8500BEETBA21 AUWww 2.10V SOT-23 - 40oC to + 85oC
AME8500BEETBA22 AVDww 2.20V SOT-23 - 40oC to + 85oC
AME8500BEETBA24 AUXww 2.40V SOT-23 - 40oC to + 85oC
AME8500BEETBA27 ASQww 2.70V SOT-23 - 40oC to + 85oC
AME8500BEETBA28 ASSww 2.80V SOT-23 - 40oC to + 85oC
AME8500BEETBA28L ASSww 2.80V SOT-23 - 40oC to + 85oC
AME8500BEETBA28Y ASSww 2.80V SOT-23 - 40oC to + 85oC
AME8500BEETBA29 ARLww 2.93V SOT-23 - 4 0oC to + 85oC
AME, Inc.
7
AME8500 / 8501 µµ
µµ
µProcessor Supervisory
n Ordering Information (contd.)
Part Number M arking VTH Vol t age Package O per at i ng Temp. Range
AME8500BEETBA42 ASIww 4.20V SOT-23 - 40oC to + 85oC
AME8500BEETCA21 ASXww 2.10V SOT-23 - 40 oC to + 85oC
AME8500BEEVAK27 AUFww 2.70V SOT-25 - 40oC to + 85oC
AME8500BEFTAA21 A8500B
AA21ww 2.10V SOT-89 - 40 oC to + 85oC
AME8500BEFTAA27 A8500B
AA27ww 2.70V SOT-89 - 40 oC to + 85oC
AME8500BEFTAF27 A8500B
AF27ww 2.70V SOT-89 - 4 0oC to + 85oC
AME8500BEFTAF40 A8500B
AF40ww 4.00V SOT-89 - 4 0oC to + 85oC
AME8500BEFTBA23 A8500B
BA23ww 2.32V SOT-89 - 40 oC to + 85oC
AME8500CEETAA21 ASYww 2.10V SOT-23 - 40 oC to + 85oC
AME8500CEETAE26 ASHww 2.63V SOT-23 - 4 0oC to + 85oC
AME8500CEETAE42 AUZww 4.20V SOT-23 - 40oC to + 85oC
AME8500CEETAF29 ASLww 2.93V SOT-23 - 4 0oC to + 85oC
AME8500CEETBE42 AVAww 4.20V SOT-23 - 40 oC to + 85oC
AME8500CEETBF31 AVYww 3.08V SOT-23 - 4 0oC to + 85oC
AME8500CEETBF46 ARWww 4.63V SOT-23 - 40 oC to + 85oC
AME8500CEETCA21 ASZww 2.10V SOT-23 - 40 oC to + 85oC
AME8500CEFTBA27 A8500C
BA27ww 2.70V SOT-89 - 40 oC to + 85oC
AME8500CEFTBA29 A8500C
BA29ww 2.93V SOT-89 - 40 oC to + 85oC
AME8500CEFTBA42 A8500C
BA42ww 4.20V SOT-89 - 40 oC to + 85oC
AME8500CEFTCD28 A8500C
CD28ww 2.80V SOT-89 - 40 oC to + 85oC
AME8500CEFTCD46 A8500C
CD46ww 4.63V SOT-89 - 40 oC to + 85oC
Please consult AME sales office or authorized Rep./Distributor for other voltage options.
AME, Inc.
8
µµ
µµ
µProcessor Supervisory
AME8500 / 8501
Maximum Unit
SOT-23 325
SOT-89 180
SOT-23 350
SOT-89 650
150 oC
300 oC
oC / W
Parameter
Thermal Resistance
M ax i m um Junc t i on Tem perature
M ax i m um Lead Tem perat ure (10 Sec)
P o we r Di ssi p ati o n mW
Parameter Rating Unit
S upply V oltage 1. 6 - 5 V
A m bient Temperat ure Range - 40 to + 85 oC
Junc t i on Tem perat ure - 40 to + 125 oC
S t orage Temperat ure - 65 to 150 oC
Parameter Maximum Unit
S upply V oltage 7 V
ESD Clas sification B
Input Current, VDD 20 mA
Output Current, RE SET, ResetB 20 mA
Rate of Rise, VDD 100 V/µs
n Absolute Maximum Ratings
n Recommended Operating Conditions
n Thermal Information
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
AME, Inc.
9
AME8500 / 8501 µµ
µµ
µProcessor Supervisory
Parameter Symbol Min Typ Max Units
15.5
15.5
3.0
5.0
VTHNOM - 1.5% VTHNOM +
1.5%
VTHNOM - 2.0% VTHNOM +
2.0%
Hy st eres i s Range V HYST 20 mV
RE SET Th reshold
Tempco 30 ppm
RESE TB Output
V ol t age Low VDD<VTH (MIN)
RESE T Out put
V ol t age Low VDD>VTH ( MA X)
ISOURCE=0.5mA,
VDD>1.8V
ISOURCE=0.15mA,
1.8V>=VDD>1.0V
ISOURCE=0.5mA,
VDD>1.8V
ISOURCE=0.15mA,
1.8V>=VDD>1.0V
VDD to Reset Delay TD1 40 200 µS
V ers i on A 0. 5 1. 5 5 m S
V ers i on D 15 30 50 m S
V ers i on E 80 150 230 m S
V ers i on F 140 210 500 mS
V ers i on K 300 440 600 m S
Tem perat ure S hut down TOFF 80 oC
Tem perat ure S hut down
Hysteresis THYS 20 oC
V
VOL
0.8VDD
mV
ISINK=1.2mA,
TA= - 40 ~85 oC0.5 V
V
S upply Current IDD
TA=-40~85oC
µA
VDD = VTH*1.10
VDD = VTH*1.10, TA = -40~ 85oC
Te st Condi tion
TA=-40~85oC
VRELEASE - VTH, note1
VTH
Res et Threshold
VDD Range* VRANGE
A M E 8501 only
A M E 8501 only
VDD= VTH - 100mV , TA = -40 ~ 85oC
Res et Ti m eout P eri od* TD2 TA= -40 ~ 85oC
RESE TB Output
V ol t age High VDD>VTH ( MA X)
RESE T Out put
V ol t age High
VOH
VDD<VTH (MIN)
n Electrical Specifications
T A = 25OC unless otherwise noted
Note1:The data based on VTH=2.7V part type.
AME, Inc.
10
µµ
µµ
µProcessor Supervisory
AME8500 / 8501
n Timing Diagram
n Applications Information
Supply Transients
These devices have a certain immunity to fast negative
going transients. In the following pages the graph titled
“Glitch Rejection” indicates the maximum allowable glitch
amplitude and duration to avoid triggering an unintended
reset. As shown in the graph shorter transients can have
larger amplitudes without triggering resets.
VDD
RESETB
RESET
TD2
VRelease VTH
TD1
TD2
TD1
50%
50%
50%
50%
Glitch Rejection Reset Time vs. Temperature
Glitch Duration (µ
µµ
µS)
Glitch Amplitude (V)
0
20
40
60
80
100
120
140
0.01 0.1 1
Reset Time (mS)
190
195
200
205
210
215
220
-45 -5 25 55 85 115
Temperature (oC)
AME8500AEETAF26
AME, Inc.
11
AME8500 / 8501 µµ
µµ
µProcessor Supervisory
IDD vs. VDD
Threshold Hysteresis vs. T emperature
TD1 Delay vs. Temperature
IDD vs. Temperature Reset VTH vs. Temperature
Reset VOL vs. Temperature
Supply Current @ 5V (u A)
Temperature (oC)
2.10
2.15
2.20
2.25
2.30
2.35
-45 -5 25 55 85 115
AME8500AEETAF26
2.630
2.632
2.634
2.636
2.638
2.640
2.642
2.644
2.646
2.648
2.650
-45 -5 25 55 85 115
Reset Vth (V)
Temperature (oC)
AME8500AEETAF26
IDD (uA)
VDD (V)
0
0.4
0.8
1.2
1.6
2
012345
85OC
-40OC
0OC
TD2 Delay (uS)
Temperature (oC)
37
38
39
40
41
42
43
-40 -20 0 20 40 60 80 100
Hysteresis (% of VTH)
Tempera tu re (oC)
0
0.1
0.2
0.3
0.4
0.5
-40-200 20406080100 0.220
0.225
0.230
0.235
0.240
0.245
0.250
0.255
0.260
0.265
-45 -5 25 55 85 115
Reset VOL @ 0.8mA (V)
Temperature (oC)
AME8500AEETAF26
AME, Inc.
12
µµ
µµ
µProcessor Supervisory
AME8500 / 8501
MIN MAX MIN MAX
A+A11.00 1.30 0.0394 0.0512
b0.35 0.50 0.0138 0.0197
C0.09 0.25 0.0035 0.0098
D2.70 3.10 0.1063 0.1220
E1.40 1.80 0.0551 0.0709
e
H2.40 3.00 0.09449 0.11811
L
è1 0o10o0o10o
1.90 B SC 0.0748 B SC
0.35BSC 0.0138BSC
SYMBOLS MILLIMETERS INCHES
n Package Dimension
SOT-23
MIN MAX MIN MAX
A1.00 1.40 0.0394 0.0551
A10.00 0.15 0.0000 0.0059
b0.35 0.50 0.0138 0.0197
C0.09 0.25 0.0035 0.0098
D2.70 3.10 0.1063 0.1220
E1.40 1.80 0.0551 0.0709
e
H2.40 3.00 0.09449 0.11811
L
è1 0o10o0o10o
SYMBOLS MILLIMETERS INCHES
1.90 B SC 0.0748 BS C
0.35BSC 0.0138BSC
b
£c1
C
D
H
E
e
L
A
A1
Top View Side View
Front View
SOT-23-L
b
£c1
C
D
H
E
e
L
A
A1
Top View Side View
Front View
AME, Inc.
13
AME8500 / 8501 µµ
µµ
µProcessor Supervisory
n Package Dimension
SOT-89
MIN MAX MIN MAX
A1.39 1.60 0.05472 0.06299
A1
C0.35 0.44 0.01378 0.01732
D4.39 4.60 0.17283 0.1811
D11.35 1.83 0.05315 0.07205
E2.28 3.60 0.08976 0.14173
e
H
S1
3.00REF
0.70REF
1.50REF
0.1181REF
0.0276REF
0.0590REF
0.8REF 0.0315REF
SYMBOLS MILLIMETERS INCHES
A
H
A1
Top View Side View
Front View
D
D1
E
e
C
POLISH
POLISH
MATTE FINISH
S1
SOT-25
MIN MAX MIN MAX
A
A10.00 0.15 0.0000 0.0059
b0.30 0.55 0.0118 0.0217
D2.70 3.10 0.1063 0.1220
E1.40 1.80 0.0551 0.0709
e
H2.60 3.00 0.10236 0.11811
L
è1 0o10o0o10o
S1
0.37BSC 0.0146BSC
0.95BSC 0.0374BSC
1.90 B S C 0.07480 B S C
SYMBOLS MILLIMETERS INCHES
1.20REF 0.0472REF
L
Top View Side View
Front View
£c1
D
S1
e
E
H
A1
b
A
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. , June 2003
Document: 2007-DS8500/8501-L
Corporate Headquarter U.S.A. Subsidiary
AME, Inc. Analog Microelectronics, Inc.
2F, 189 Kang-Chien Road, Nei-Hu Dist. 3100 De La Cruz Blvd., Suite 201
Taipei 114 Taiwan, R.O.C. Santa Clara, CA. 95054-2046
Tel: 886 2 2627-8687 Tel : (408) 988-2388
Fax: 886 2 2659-2989 Fax: (408) 988-2489
www.ame.com.tw
E-Mail: sales@ame.com.tw
