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AME, Inc.
AME8500 / 8501
Processor Supervisory
n General Description
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 P based systems. When the power supply voltage drops below the voltage threshold a reset is asserted immediately (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 ambient temperature exceeds 80oC a reset is asserted and remains asserted until the temperature falls below 60oC. Space saving SOT23 packages and micropower quiescent current (<3.0A) make this family a natural for portable battery powered equipment.
n Typical Operating Circuit
2
VCC
*
VCC
AME8500
RESET / RESET GND
Processor
RESET Input GND
3
Note: * External pull-up resistor is required if opendrain output is used. 10 k is recommended.
n Block Diagram
AME8500 with Push-Pull RESET
VDD R1 I1 P1
Delay
n Features
l Small packages: SOT-23, SOT-89 l 11 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 < 3.0A l Thermal shutdown option (AME8501)
VDD GND
RESET N1
R2
VREF
AME8500 with Push-Pull RESET
n Applications
l l l l l l Portable electronics Power supplies Computer peripherals Data acquisition systems Applications using CPUs Consumer electronics
R1
I1
P1
Delay
RESET N1
R2 GND
VREF
1
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Block Diagram (contd.)
AME8500 with Open-Drain RESET
VDD R1 I1 VDD R1
Delay
AME8500 with Open-Drain RESET
I1
RESET N1 GND R2 VREF
Delay
RESET N1
R2 GND
VREF
n Pin Configuration
SOT-23 Top View
3
SOT-23 Top View AME8500AEET AME8501AEET 1. GND 2. Reset/ResetB 3. V DD
3
AME8500
AME8500
AME8500BEET AME8501BEET 1. Reset/ResetB 2. GND 3. V DD
1
2
1
2
SOT-23 Top View
3
SOT-23-L Top View AME8500CEET AME8501CEET 1. Reset/ResetB 2. V DD 3. GND
3
AME8500
AME8500
AME8500AEET AME8501AEET 1. GND 2. Reset/ResetB 3. V DD
1
2
1
2
2
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Pin Configuration (contd.)
SOT-23-L Top View
3
SOT-23-L Top View AME8500BEET AME8501BEET 1. Reset/ResetB 2. GND 3. V DD
3
AME8500
AME8500
AME8500CEET AME8501CEET 1. Reset/ResetB 2. V DD 3. GND
1
2
1
2
SOT-89 Top View AME8500AEFT AME8501AEFT 1. GND 2. V DD 3. Reset/ResetB
SOT-89 Top View AME8500BEFT AME8501BEFT 1. Reset/ResetB 2. V DD 3. GND
AME8500
AME8500
1
2
3
1
2
3
SOT-89 Top View AME8500CEFT AME8501CEFT 1. V DD 2. GND 3. Reset/ResetB
5
SOT-25 Top View
4
AME8500
AME8500
1
2
3
1
2
3
AME8500BEEV AME8501BEEV 1. Reset/ResetB 2. VDD 3. GND 4. N/C 5. N/C
n Pin Description
Pin Name
GND RESETB/RESET Ground This pin can be ordered as RESET or RESETB. RESET is active high. RESETB is active low. It is also available with an open drain or pushpull output. Positive power supply. A reset is asserted after this voltage drops below a predetermined level. After V DD rises above that level the reset output remains asserted until the end of the reset timeout period.
Pin Description
VDD
3
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Ordering Information AME8500 x x x x x x x x AME8501 x x x x x x x x
Special Feature VDD Threshold Voltage (VTH) Reset Time (TD2NOM) Output Driver Option Number of Pins Package Type Operating Temperature Range Pin Configuration
Output Driver Number Option Package of Characteristic Type Pins of RESET or RESETB pin T: 3 V: 5
Pin Configuration
Operating Temperature Range
Reset Time (TD2NOM)
VDD Threshold Voltage (V TH )
Special Feature
A
(SOT-23)
B
(SOT-23)
C
(SOT-23)
A
(SOT-89)
B
(SOT-89)
C
(SOT-89)
1. GND E: -40OC to 85OC E: SOT-2X 2. Reset/ F: SOT-89 ResetB 3. VDD 1. Reset/ ResetB 2. GND 3. VDD 1. Reset/ ResetB 2. VDD 3. GND 1. GND 2. VDD 3. Reset/ ResetB 1. Reset/ ResetB 2. VDD 3. GND 1. VDD 2. GND 3. Reset/ ResetB
A: RESETB /PP A: 1.5 ms B: RESETB /OD D: 30 ms C: RESET/ PP E: 150 ms D: RESET/ OD F: 210 ms
(RESET = Active High) (RESETB = Active Low) (PP = Push pull out) (OD = Open drain output polarity)
15: VTH= 16: VTH= 18: VTH= 19: VTH= 20: VTH= 21: VTH= 22: VTH= 23: VTH= 24: VTH= 26: VTH= 27: VTH= 28: VTH= 29: VTH= 31: VTH= 40: VTH= 42: VTH= 44: VTH= 46: VTH=
1.5V L: Low profile 1.6V Y: Lead free & 1.8V Low profile 1.9V Z: Lead free 2.0V 2.1V 2.2V 2.32V 2.4V 2.63V 2.7V 2.8V 2.93V 3.08V 4.0V 4.2V 4.38V 4.63V
4
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Ordering Information
Part Number
AME8500AEETAA21 AME8500AEETAD20 AME8500AEETAE20 AME8500AEETAE21 AME8500AEETAE26 AME8500AEETAE26L AME8500AEETAE29 AME8500AEETAE31 AME8500AEETAE46 AME8500AEETAF15 AME8500AEETAF16 AME8500AEETAF21 AME8500AEETAF23 AME8500AEETAF26 AME8500AEETAF27 AME8500AEETAF29 AME8500AEETAF31 AME8500AEETAF40 AME8500AEETAF44 AME8500AEETAF46 AME8500AEETBF31 AME8500AEETBF46 AME8500AEETCA21 AME8500AEETCA27 AME8500AEETCA46 AME8500AEETCD20 AME8500AEETCF21 AME8500AEETCF29 AME8500AEETCF31
Marking
ASVww ALXww AUAww AVGww ASJww ASJww ALYww AUBww ATSww ATDww ATEww ASKww ATTww AMPww ATRww AMOww ASAww ASBww ARNww ARKww AUTww AUUww ASWww AVBww AVCww ALZww ATYww ALVww ASUww
VTH Voltage
2.10V 2.00V 2.00V 2.10V 2.63V 2.63V 2.93V 3.08V 4.63V 1.50V 1.60V 2.10V 2.32V 2.63V 2.70V 2.93V 3.08V 4.00V 4.38V 4.63V 3.08V 4.63V 2.10V 2.70V 4.63V 2.00V 2.10V 2.93V 3.08V
Package
SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23
Operating Temp. Range
- 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC
5
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Ordering Information (contd.)
Part Number
AME8500AEETCF46 AME8500AEETDF46 AME8500AEFTAA21 AME8500AEFTAF27 AME8500AEFTCA21 AME8500AEFTDA21 AME8500BEETAA21 AME8500BEETAA27 AME8500BEETAA28 AME8500BEETAA29 AME8500BEETAF27 AME8500BEETAF29 AME8500BEETAF31 AME8500BEETAF40 AME8500BEETBA21 AME8500BEETBA22 AME8500BEETBA24 AME8500BEETBA27 AME8500BEETBA28 AME8500BEETBA28L AME8500BEETBA28Y AME8500BEETBA29
6
Marking
ARJww ARIww A8500A AA21ww A8500A AF27ww A8500A CA21ww A8500A DA21ww ARTww ARMww ASRww ARZww AUCww AUVww ATOww ATQww AUWww AVDww AUXww ASQww ASSww ASSww ASSww ARLww
VTH Voltage
4.63V 4.63V 2.10V 2.70V 2.10V 2.10V 2.10V 2.70V 2.80V 2.93V 2.70V 2.93V 3.08V 4.00V 2.10V 2.20V 2.40V 2.70V 2.80V 2.80V 2.80V 2.93V
Package
SOT-23 SOT-23 SOT-89 SOT-89 SOT-89 SOT-89 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23
Operating Temp. Range
- 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Ordering Information (contd.)
Part Number
AME8500BEETBA42 AME8500BEETCA21 AME8500BEEVAK27 AME8500BEFTAA21 AME8500BEFTAA27 AME8500BEFTAF27 AME8500BEFTAF40 AME8500BEFTBA23 AME8500CEETAA21 AME8500CEETAE26 AME8500CEETAE42 AME8500CEETAF29 AME8500CEETBE42 AME8500CEETBF31 AME8500CEETBF46 AME8500CEETCA21 AME8500CEFTBA27 AME8500CEFTBA29 AME8500CEFTBA42 AME8500CEFTCD28 AME8500CEFTCD46
Marking
ASIww ASXww AUFww A8500B AA21ww A8500B AA27ww A8500B AF27ww A8500B AF40ww A8500B BA23ww ASYww ASHww AUZww ASLww AVAww AVYww ARWww ASZww A8500C BA27ww A8500C BA29ww A8500C BA42ww A8500C CD28ww A8500C CD46ww
VTH Voltage
4.20V 2.10V 2.70V 2.10V 2.70V 2.70V 4.00V 2.32V 2.10V 2.63V 4.20V 2.93V 4.20V 3.08V 4.63V 2.10V 2.70V 2.93V 4.20V 2.80V 4.63V
Package
SOT-23 SOT-23 SOT-25 SOT-89 SOT-89 SOT-89 SOT-89 SOT-89 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-23 SOT-89 SOT-89 SOT-89 SOT-89 SOT-89
Operating Temp. Range
- 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC - 40oC to + 85oC
Please consult AME sales office or authorized Rep./Distributor for other voltage options.
7
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Absolute Maximum Ratings
Parameter
Supply Voltage ESD Classification Input Current, VDD Output Current, RESET, ResetB Rate of Rise, VDD
Maximum
7 B 20 20 100
Unit
V
mA mA V/ s
Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device
n Recommended Operating Conditions
Parameter
Supply Voltage Ambient Temperature Range Junction Temperature Storage Temperature
Rating
1.6 - 5 - 40 to + 85 - 40 to + 125 - 65 to 150
Unit
V
o
C C C
o
o
n Thermal Information
Parameter
SOT-23 Thermal Resistance SOT-89 SOT-23 Power Dissipation SOT-89 Maximum Junction Temperature Maximum Lead Temperature (10 Sec) 650 150 300
o
Maximum
325
Unit
o
C/W
180 350 mW
C C
o
8
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Electrical Specifications
TA = 25OC unless otherwise noted
Parameter VDD Range* Symbol VRANGE Test Condition Min 1 TA=-40~85 C V DD = VTH *1.10 VDD = VTH *1.10, TA=-40~85 C VTHNOM - 1.5% Reset Threshold V TH TA=-40~85 C Hysteresis Range RESET Threshold Tempco RESETB Output Voltage Low RESET Output Voltage Low VDD VTH (MAX) ISINK=1.2mA, TA= -40~85oC ISOURCE=0.5mA, RESETB Output Voltage High VOH RESET Output Voltage High VDD to Reset Delay TD1 VDD >1.8V VDD >VTH (MAX) ISOURCE=0.15mA, 1.8V>=VDD >1.0V ISOURCE=0.5mA, VDD 1.8V ISOURCE=0.15mA, 1.8V>=VDD >1.0V VDD = V TH - 100mV, TA= -40 ~ 85oC Version A Version D Reset Timeout Period* TD2 TA= -40 ~ 85 C
o o o o
Typ
Max 5.5
Units V
1
5.5 3.0 5.0 V THNOM + 1.5% V THNOM + 2.0% 20 30 mV ppm A
Supply Current
IDD
mV
VTHNOM - 2.0%
VHY ST
VRELEASE - VTH , note1
0.5
V
0.8VDD
V
40 0.5 15 80 140 300 1.5 30 150 210 440 80 20
200 5 50 230 500 600
S mS mS mS mS mS
o
Version E Version F Version K
Temperature Shutdown Temperature Shutdown Hysteresis
TOFF THY S
AME8501 only AME8501 only
C C
o
Note1:The data based on VTH=2.7V part type.
9
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Timing Diagram
VRelease VTH
VDD
TD2
50% RESET
TD1
50%
TD2
50% RESETB
TD1
50%
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.
Glitch Rejection
140 120 220
Reset Time vs. Temperature
215
Glitch Duration (S)
Reset Time (mS)
100 80 60 40 20 0 0.01 0.1 1
210
205
AME8500AEETAF26
200
195
190 -45
-5
25
55
85
115
Glitch Amplitude (V)
Temperature ( oC)
10
AME, Inc.
AME8500 / 8501
IDD vs. Temperature
2.35 2.650 2.648
Processor Supervisory
Reset VTH vs. Temperature
Supply Current @ 5V (uA)
2.30
2.646 2.644
Reset Vth (V)
2.25
2.642 2.640 2.638 2.636 2.634 2.632
2.20
AME8500AEETAF26
AME8500AEETAF26
2.15
2.10 -45 -5 25 55 85 115
2.630 -45 -5 25 55 85 115
Temperature (oC)
Temperature (oC)
IDD vs. VDD
2 43
TD1 Delay vs. Temperature
1.6
42
85OC -40OC IDD (uA)
1.2
TD2 Delay (uS)
41
0O C
0.8
40
39
0.4
38
0 0 1 2 3 4 5
37 -40
-20
0
20
40
60
80
100
VDD (V)
Temperature (oC)
Threshold Hysteresis vs. Temperature
0.5 0.265 0.260 0.4
Reset VOL vs. Temperature
Reset VOL @ 0.8mA (V)
Hysteresis (% of VTH)
0.255 0.250 0.245 0.240 0.235
0.3
0.2
AME8500AEETAF26
0.230 0.225
0.1
0 -40
-20
0
20
40
60
80
100
0.220 -45
-5
25
55
85
115
Temperature (oC)
Temperature ( oC)
11
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Package Dimension
SOT-23
Top View D Side View
SYMBOLS
C
MILLIMETERS MIN MAX
1.40 0.15 0.50 0.25 3.10 1.80
INCHES MIN
0.0394 0.0000 0.0138 0.0035 0.1063 0.0551
MAX
0.0551 0.0059 0.0197 0.0098 0.1220 0.0709
A A1 b
E H L
1.00 0.00 0.35 0.09 2.70 1.40
C D E
e
c 1
e H L e1
1.90 BSC 2.40 3.00
0.0748 BSC 0.09449 0.11811 0.0138BSC 0o 10 o
Front View
0.35BSC 0o 10o
SOT-23-L
SYMBOLS
Top View D Side View C
A1
b
A
MILLIMETERS MIN MAX
1.30 0.50 0.25 3.10 1.80
INCHES MIN
0.0394 0.0138 0.0035 0.1063 0.0551
MAX
0.0512 0.0197 0.0098 0.1220 0.0709
A+A1 b C
1.00 0.35 0.09 2.70 1.40
L
D E e H L
E
H
1.90 BSC 2.40 3.00
0.0748 BSC 0.09449 0.11811 0.0138BSC
o
0.35BSC 0
o
e
c 1
e1
10
0o
10o
Front View
12
A1
b
A
AME, Inc.
AME8500 / 8501
Processor Supervisory
n Package Dimension
SOT-89
Top View D D1 H
POLISH
Side View
SYMBOLS A A1
E
MILLIMETERS MIN
1.39
INCHES MIN MAX
MAX
1.60
0.05472 0.06299 0.0315REF 0.01378 0.01732 0.17283 0.1811
0.8REF 0.35 4.39 1.35 2.28 0.44 4.60 1.83 3.60
C D D1 E
C
A1
0.05315 0.07205 0.08976 0.14173 0.1181REF 0.0276REF 0.0590REF
S1 e Front View
MATTE FINISH
e H S1
3.00REF 0.70REF 1.50REF
A
POLISH
SOT-25
Top View D L Side View
SYMBOLS A A1 b D E e H L e1
A
MILLIMETERS MIN
0.00 0.30 2.70 1.40
INCHES MIN
0.0000 0.0118 0.1063 0.0551
MAX
0.15 0.55 3.10 1.80
MAX
0.0059 0.0217 0.1220 0.0709
1.20REF
0.0472REF
H
E
S1 e
c 1
1.90 BSC 2.60 3.00
0.07480 BSC 0.10236 0.11811 0.0146BSC
o
0.37BSC 0
o
Front View
10
0o
10o
S1
0.95BSC
0.0374BSC
b
A1
13
www.ame.com.tw
E-Mail: sales@ame.com.tw
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. (c) AME, Inc. , June 2003 Document: 2007-DS8500/8501-L
Corporate Headquarter
AME, Inc.
2F, 189 Kang-Chien Road, Nei-Hu Dist. Taipei 114 Taiwan, R.O.C. Tel: 886 2 2627-8687 Fax: 886 2 2659-2989
U.S.A. Subsidiary
Analog Microelectronics, Inc.
3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : (408) 988-2388 Fax: (408) 988-2489

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