AME8570AEITAF23Z_技术文档

AME, Inc.

mProcessor Supervisory

AME8570

n General Description

n Functional Block Diagram

AME8570 Push-Pull RESET/ RESETB

TheAME8570 family allows the user to customize the

CPU reset function without any external components.

The user has serveral choice of reset voltage thresholds,

reset time intervals, and output driver configurations, all

of which are preset at the factory.

IN

R1

R2

P1

N1

I1

RESET/

RESETB

Delay

These circuits monitor the power supply voltage of mP

based systems. When the power supply voltage drops

below the voltage threshold a reset is asserted immedi-

ately ( within an interval T_D1). The reset remains asserted

after the supply voltage rises above the voltage threshold

for a time interval, T_D2. 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 only when supply voltage is greater than

1V.

V_REF

GND

AME8570 Open-Drain RESET/RESETB

IN

I1

R1

R2

RESET/

RESETB

Delay

TheAME8570 also provide a reset manually by pulling

the MRB input to ground.

V_REF

N1

GND

Space saving SC-70 package and micropower quies-

cent current ( < 5.0mA ) make this family a natural for

portable battery powered equipment.

AME8570 Push-Pull RESET/ RESETB with MRB

n Features

MRB

l Small Packages : SC-70, SOT-23

l Tight Voltage Threshold Tolerance :

± 1.50%

l Wide Temperature Range : -40^OC to 85^OC

l Low Quiescent Current < 5.0 mA

l Manual Reset Input Option

l All AME's Lead Free Products Meet RoHS

Standards

IN

R1

R2

I1

P1

N1

RESET/

RESETB

Delay

V_REF

GND

AME8570 Open-Drain RESET/ RESETB with MRB

MRB

nApplications

IN

l Portable Electronics

l Power Supplies

R1

R2

I1

RESET/

RESETB

l Computer Peripherals

l Data Acquisition Systems

l Applications using CPUs

l Consumer Electronics

Delay

V_REF

N1

GND

1

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

n Typical Operating Circuit

V_IN

R*_PULL-UP

V_IN

mP

RESET

INPUT

PUSH BUTTON

SWITCH

RESET / RESETB

MRB

GND

Note: * External pull-up resistor is required if open-drain output is used. 10KW is recommended.

n Pin Configuration

SC-70-3

SOT-23

Top View

AME8570AEIT

1. GND

AME8570AEET

1. GND

3

2. RESET/RESETB

3. IN

2. RESET/RESETB

3. IN

AME8570

1

2

1

2

* Die Attach:

Non-Conductive Epoxy

SC-70-4

Top View

3

AME8570AEIU

1. GND

4

2. RESET/RESETB

3. MRB

AME8570

4. IN

1

2

* Die Attach:

Non-Conductive Epoxy

2

Rev. A.01

AME, Inc.

mProcessor Supervisory

AME8570

n Pin Description

AME8570AEIT / AME8570AEET

Pin Number Pin Name

Pin Description

1

GND

Ground

This pin can be ordered as RESET or RESETB. Reset is active high.

2

RESET/RESETB RESETB is active low. It is also available with an open-drain or push-pull

output.

Positive power supply. A reset is asserted after this voltage drops below

3

IN

a predetermined level. After V_INrises above that level the reset output

remains asserted until the end of the reset timeout period.

AME8570AEIU

Pin Number Pin Name

Pin Description

Ground

1

GND

This pin can be ordered as RESET or RESETB. Reset is active high.

2

RESET/RESETB RESETB is active low. It is also available with an open-drain or push-pull

output.

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

3

4

MRB

period. This pin is internally pulled high. The pin is floating or tied to V_IN,

if it is unused.

Positive power supply. A reset is asserted after this voltage drops below

IN

a predetermined level. After V_INrises above that level the reset output

remains asserted until the end of the reset timeout period.

3

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

n Ordering Information

AME8570 x x x x x x xx x

Special Feature

V_INThreshold Voltage (V_TH)

Reset Time (T_D2NOM

)

Output Driver Option

Number of Pins

Package Type

Operating Ambient Temperature Range

Pin Configuration

Number

of

Pins

Reset Time

(T_D2NOM

Operating Ambient

Package

Type

V_INThreshold

Voltage (V_TH

Special

Feature

Output Options

)

Configuration Temperature Range

)

-40^OC to 85^OC

A

23: V_TH=2.32V

26: V_TH=2.63V

29: V_TH=2.93V

31: V_TH=3.08V

46: V_TH=4.63V

E:

SOT-2X

SC-70

A: RESETB/PP F: 210ms

B: RESETB/OD

Z: Lead free

1. GND

2. RESET/

RESETB

3. IN

E:

I:

T: 3

U: 4

(SOT-23)

C: RESET/PP

(SC-70-3)

D: RESET/OD

1. GND

2. RESET/

RESETB

3. MRB

4. IN

A

(SC-70-4)

(RESET=Active High)

(RESETB=Active Low)

(PP=Push-pull out)

(OD=Open-Drain

4

Rev. A.01

AME, Inc.

mProcessor Supervisory

AME8570

n Ordering Information

Operating Ambient

Temperature Range

Part Number

Marking*

Output Voltage Package

-40^oC to 85^oC

AME8570AEETAF23Z

AME8570AEITAF23Z

AME8570AEIUAF23Z

AME8570AEETAF26Z

AME8570AEITAF26Z

AME8570AEIUAF26Z

AME8570AEETAF29Z

AME8570AEITAF29Z

AME8570AEIUAF29Z

AME8570AEETCF29Z

AME8570AEITCF29Z

AME8570AEIUCF29Z

AME8570AEETAF31Z

AME8570AEITAF31Z

AME8570AEIUAF31Z

AME8570AEETBF31Z

AME8570AEITBF31Z

AME8570AEIUBF31Z

AME8570AEETAF46Z

AME8570AEITAF46Z

AME8570AEIUAF46Z

AME8570AEETCF46Z

AME8570AEITCF46Z

AME8570AEIUCF46Z

BJOww

BJPw

2.32V

2.63V

2.93V

3.08V

4.63V

SOT-23

SC-70-3

SC-70-4

SOT-23

SC-70-3

SC-70-4

SOT-23

SC-70-3

SC-70-4

SOT-23

SC-70-3

SC-70-4

SOT-23

SC-70-3

SC-70-4

SOT-23

SC-70-3

SC-70-4

SOT-23

SC-70-3

SC-70-4

SOT-23

SC-70-3

SC-70-4

-40^oC to 85^oC

BJQw

BJRww

BJSw

BJTw

BJUww

BJVw

BJWw

BJXww

BJYw

BJZw

BKAww

BKBw

BKCw

BKDww

BKEw

BKFw

BKGww

BKHw

BKIw

BKJww

BKKw

BKLw

Note: ww & w represents the date code and pls refer to the Date Code Rule on Package Dimension.

* A line on top of the first letter represents lead free plating such as BJOww.

Pls consult AME sales office or authorized Rep./Distributor for the availability of output voltage or package type.

5

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

n Absolute Maximum Ratings

Parameter

Maximum

Unit

Supply Voltage

6

V

Input Current, V_IN

20

mA

Output Current, RESET, RESETB

ESD Classification

B*

Note: Caution: Stress above the listed in absolute maximum ratings may cause permanent damage to the device.

* HBM B: 2000V ~ 3999V

n Recommended Operating conditions

Parameter

Symbol

Rating

- 40 to 85

- 40 to 125

- 65 to 150

Unit

Ambient Temperature Range

Junction Temperature Range

Storage Temperature Range

T_A

T_J

^OC

T_STG

n Thermal Information

Parameter

Package

Die Attach

Symbol Maximum

Unit

Thermal Resistance*

(Junction to Case)

SOT-23

140

280

q_JC

q_JA

P_D

^oC / W

Non-Conductive

Epoxy

Thermal Resistance

(Junction to Ambient)

SOT-23

Internal Power Dissipation

Solder Iron (10 Sec) **

400

350

mW

^oC

* Measure q_JCon center of molding compound if IC has no tab.

** MIL-STD-202G 210F

6

Rev. A.01

AME, Inc.

mProcessor Supervisory

AME8570

n Electrical Specifications

T_A= 25^OC unless otherwise noted.

Test Condition

Parameter

V_INRange

Symbol

Min

Typ

Max Units

V_RANGE

T_A= -40^oC to 85^oC

V_IN= V_THx1.10, T_A= -40^oC to 85^oC

MRB unconnected

1

5.5

10

V

Supply Current

I_IN

5

A

m

V_TH

-1.5%

V_TH

+1.5%

V_TH

RESET Threshold

Hysteresis Range

V_TH

V

T_A= -40^oC to 85^oC

-2%

10

+2%

60

V_HYST

V_Release- V_TH

30

mV

I_SOURCE= 0.5mA,

RESETB Output

Voltage High

V_IN> 1.8V

V_IN> V_{TH (MAX)}

I_SOURCE= 0.15mA,

1.8V >= V_IN> 1.0V

I_SOURCE= 0.5mA,

V_OH

0.8V_IN

V

RESET Output

Voltage High

V_IN> 1.8V

V_IN< V_{TH (MIN)}

I_SOURCE= 0.15mA,

1.8V >= V_IN> 1.0V

RESETB Output Voltage Low

RESET Output Voltage Low

V_INto RESET Delay

V_IN< V_{TH (MIN)}

V_IN> V_{TH (MAX)}

I_SINK= 1.2mA,

T_J= -40^oC to 85^oC

V_OL

0.5

V

T_D1

T_D2

V_IN= V_TH-100mV; T_A= -40^oC to 85^oC

T_A= -40^oC to 85^oC

Version F

40

S

m

RESET Timeout Period

140

210

600

0.7

mS

MRB _IL

MRB _IH

MRB Input Threshold

MRB Pulse Width

V_IN= V_THx 1.2

V

0.8V_IN

1

S

m

MRB Noise Immunity

(pulse width with no reset)

100

500

nS

MRB to RESET Delay

MRB Pull Up Resistance

80

120

K

W

7

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

n Timing Diagram

V_Release

V_TH

V_IN

T_D2

50%

T_D1

50%

RESET

T_D2

50%

T_D1

RESETB

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

Reset Time vs. Temperature

600

550

140

120

100

80

60

40

20

0

500

450

400

350

300

250

200

150

-45 -35 -25 -15 -5

5

15 25 35 45 55 65 75 85 95 105 115

0.01

0.1

1

Temperature (^oC)

Glitch Amplitude (V)

8

Rev. A.01

AME, Inc.

mProcessor Supervisory

AME8570

n Detailed Description

The AME8570 are designed to interface with the reset

input of a microprocessor and to prevent code-execution

errors due to power up, power down, and other power

supply errors.

Manual Reset Input

The AME8570 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 (T_D2).

The MRB pin is internally pulled up to V_INby a 100K

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. Active high reset out-

puts are denoted as RESET. Active low reset outputs

are denoted as RESETB. The selection guide on this

data sheet shows all possible combinations of output

driver configuration.

The MRB pin is ESD protected by diodes connected

to V_INand GND. So the MRB pin should never be driven

higher than V_INor lower thanGND.

A reset will be asserted if any of two things happen:

1) V_INdrops below the threshold (V_TH)

2) The MRB pin is pulled low.

Glitch Rejection

TheAME8570 family will reject negative going transients

on the V_INline 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 be-

tween glitch amplitude and allowable glitch duration to

avoid unintended resets.

The reset will remain asserted for the prescribed reset

interval after:

1) V_INrises above the threshold (V_TH)

2) MRB goes high

Accurate Output State at Low V_IN

With V_INvoltage on the order of the MOS transistor

threshold (<1.0V) the outputs of the AME8570 may be-

come undefined. For parts with active low output

(RESETB) a resistor placed between RESETB andGND

on the order of 100K will ensure that the RESETB output

stays low when V_INis lower than the threshold voltage of

the part. In a like manner a resistor on the order of 100K

when placed between RESET and V_INwill ensure parts

with active high output (RESET) will remain high when

V_INis lower than the threshold voltage of the part.

9

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

Reset V_THvs. Temperature

I_INvs. Temperature

3.5

2.70

2.69

2.68

2.67

2.66

2.65

2.64

2.63

2.62

2.61

3.0

2.5

AME8570AEETAF26

2.0

1.5

1.0

2.60

-45 -35 -25 -15 -5

5

15 25 35 45 55 65 75 85 95 105 115

-45 -35 -25 -15 -5

5 15 25 35 45 55 65 75 85 95 105 115

Temperature (^oC)

Threshold Hysteresis vs. Temperature

I_INvs. V_IN

2.8

2.4

2.0

1.6

1.2

0.8

0.4

0.030

0.025

0.020

0.015

0.010

0.005

0.000

85^oC

0^oC

-40^oC

0.0

-40

-20

0

20

40

60

80

0.0

0.5 1.0

1.5

2.0

2.5

3.0 3.5

4.0

4.5 5.0

Temperature (^oC)

V_IN(V)

Reset VOL vs. Temperature

0.034

0.032

0.030

0.028

0.026

0.024

0.022

0.020

0.018

0.016

0.014

0.012

0.010

AME8570AEETAF26

-45 -35 -25 -15 -5

5 15 25 35 45 55 65 75 85 95 105115

Temperature (^oC)

10

Rev. A.01

AME, Inc.

mProcessor Supervisory

AME8570

n Date Code Rule

For SOT-23 Package Only

Marking

Date Code

Year

xxx0

xxx1

xxx2

xxx3

xxx4

xxx5

xxx6

xxx7

xxx8

xxx9

A

W

For SC-70 Package Only

w: Work Week Code

Marking

Date Code

Year

xxx0

xxx1

xxx2

xxx3

xxx4

xxx5

xxx6

xxx7

xxx8

xxx9

A: 01&02 K: 21&22 U: 41&42

B: 03&04 L: 23&24 V: 43&44

C: 05&06 M: 25&26 W: 45&46

D: 07&08 N: 27&28 X: 47&48

E: 09&10 O: 29&30 Y: 49&50

F: 11&12 P: 31&32 Z: 51&52

G: 13&14 Q: 33&34

A

W

H: 15&16 R: 35&36

I: 17&18 S: 37&38

J: 19&20 T: 39&40

11

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

n Tape and Reel Dimension

SOT-23

P

W

AME

PIN 1

Carrier Tape, Number of Components Per Reel and Reel Size

Package

Carrier Width (W)

Pitch (P)

Part Per Full Reel

Reel Size

SOT-23

8.0±0.1 mm

4.0±0.1 mm

3000pcs

180±1 mm

SC-70-3

P

W

AME

PIN 1

Carrier Tape, Number of Components Per Reel and Reel Size

Package

Carrier Width (W)

Pitch (P)

Part Per Full Reel

Reel Size

SC-70-3

8.0±0.1 mm

4.0±0.1 mm

3000pcs

180±1 mm

12

Rev. A.01

AME, Inc.

mProcessor Supervisory

AME8570

n Tape and Reel Dimension

SC-70-4

P

W

AME

PIN 1

Carrier Tape, Number of Components Per Reel and Reel Size

Package

Carrier Width (W)

Pitch (P)

Part Per Full Reel

Reel Size

SC-70-4

8.0±0.1 mm

4.0±0.1 mm

3000pcs

180±1 mm

13

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

n Package Dimension

SOT-23

Top View

Side View

MILLIMETERS

INCHES

MIN MAX

SYMBOLS

D

MIN

1.00

0.00

0.35

2.70

1.40

MAX

1.40

0.15

0.50

3.10

1.80

A

A₁

b

0.0394 0.0551

0.0000 0.0059

0.0138 0.0197

0.1063 0.1220

0.0551 0.0709

0.0748 BSC

D

E

e

1.90 BSC

e

θ1

H

L

2.40

3.00

0.09449 0.11811

0.0138BSC

0.35BSC

0^o

10^o

0^o

10^o

Front View

1

q

b

14

Rev. A.01

AME, Inc.

mProcessor Supervisory

AME8570

n Package Dimension

SC-70-3

Top View

Side View

MILLIMETERS

INCHES

MIN

SYMBOLS

MIN

0.80

0.00

0.80

0.15

0.08

1.90

2.00

1.15

MAX

0.043

0.004

0.039

0.016

0.010

0.008

0.087

0.096

0.053

0.15(0.006)

D

C

A

e1

D

A

A1

A2

b

1.10

0.031

0.000

0.031

0.006

0.003

0.075

0.079

0.045

0.10

1.00

E/2

E1/2

E

E1

0.40

0.25

b1

c

0.15(0.006)

C

0.25

0.20

2.20

2.45

1.35

See Detail A

e

B

b

c1

D

.10(0.004) M

CA B

E

E1

e

Front View

0.65BSC

0.0255BSC

1.20

0.26

0^o

1.40

0.46

8^o

0.047

0.010

0^o

0.055

0.018

8^o

e1

L

A2

A

SEATING PLANE

A1

1

2

q

C

.10(0.004)

C

4^o

10^o

4^o

10^o

Detail A

SECTION A-A

θ1

(b)

b1

c1

c

GAGE

PLANE

H

.15(.0059)

BASE METAL

θ

L

15

Rev. A.01

AME, Inc.

AME8570

mProcessor Supervisory

n Package Dimension

SC-70-4

D

e1

MILLIMETERS

INCHES

MIN

q

SYMBOLS

MIN

0.900

0.000

0.900

0.250

0.350

0.080

MAX

0.043

0.004

0.039

0.016

0.020

0.006

e

L

A

A1

A2

b

1.100

0.035

0.000

0.035

0.010

0.014

0.003

0.100

1.000

E

0.400

0.500

b1

c

E1

0.150

L1

0.20

0.050 TYP

0.002 TYP

d

c

2.000

1.150

2.150

2.200

1.350

2.450

0.079

0.045

0.085

0.087

0.053

0.096

D

E

d

E1

e

b1

b

0.650 TYP

0.026TYP

1.200

1.400

0.047

0.055

e1

L

TOP VIEW

SIDE VIEW

0.525 REF

0.021 REF

0.260

0^o

0.460

8^o

0.010

0^o

0.018

8^o

L1

q

A2

A

A1

FRONT VIEW

16

Rev. A.01

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.

ã AME, Inc. , July 2007

Document: 1221-DS8570-A.01

Corporate Headquarter

AME, Inc.

U.S.A (Subsidiary)

Analog Microelectronics, Inc.

3100 De La Cruz Blvd., Suite 201

Santa Clara, CA. 95054-2046

Tel : (408) 988-2388

2F, 302 Rui-Guang Road, Nei-Hu District

Taipei 114, Taiwan.

Tel: 886 2 2627-8687

Fax: 886 2 2659-2989

Fax: (408) 988-2489


型号：	AME8570AEITAF23Z
厂家：	ANALOG MICROELECTRONICS
描述：	mProcessor Supervisory mProcessor监督
文件：	总17页 (文件大小：170K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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