AME8500AEETDD26 - Analog Microelectronics

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

n Features

lSmall packages: SOT-23, SOT-89

l1 1 voltage threshold options

lTight voltage threshold tolerance ---±1.50%

l4 reset interval options

l4 output configuration options

lWide temperature range -------- -40oC to 85oC

lLow temperature coefficient --- 100ppm/oC (max)

lLow quiescent current < 3.0µA

lThermal shutdown option (AME8501)

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 thresh-

olds, reset time intervals, and output driver configura-

tions, 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 800C a reset is asserted and

remains asserted until the temperature falls below 600C.

Space saving SOT23 packages and micropower quies-

cent current (<3.0µA) make this family a natural for por-

table battery powered equipment.

n Applications

lPortable electronics

lPower supplies

lComputer peripherals

lData acquisition systems

lApplications using CPUs

lConsumer electronics

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

n Pin Configuration

AME8500AEET

AME8501AEET

1: GND

2: Reset/ResetB

3: VDD

AME8500BEET

AME8501BEET

1: Reset/ResetB

2: GND

3: VDD

AME8500AEFT

AME8501AEFT

1: GND

2: VDD

3: Reset/ResetB

AME8500BEFT

AME8501BEFT

1: Reset/ResetB

2: VDD

3: GND

AME8500CEET

AME8501CEET

1: Reset/ResetB

2: VDD

3: GND

1: VDD

2: GND

3: Reset/ResetB

AME8500CEFT

AME8501CEFT

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

Note: AME8500 without over-temperature thermal shutdown function.

AME8501 with over-temperature thermal shutdown function.

n Ordering Information

AME8500xEET X XXX ( SOT- 23)

AME8501xEET X XXX ( SOT- 23)

AME8500xEFT X XXX ( SOT- 89)

AME8501xEFT X XXX ( SOT- 89)

VDD Threshold V ol ta ge (VTH)

21: VTH=2.1V

24: VTH=2.4V

26: VTH=2.63V

27: VTH=2.7V

28: VTH=2.8V

29: VTH=2.93V

31: VTH=3.08V

40: VTH=4.0V

42: VTH=4.20V

44: VTH=4.38V

46: VTH=4.63V

note: Please contact AME sales dept. for other voltage options.

Reset T ime (T D2NOM)

A: TD=1.5mS

D: TD=30mS

E: TD=150mS

F: TD=210mS

Output Drive r Opti on

--For exa mple-- *

AME8500AEETAF 27 means: A: PP

Output is RES ETB, push pull B: OD * Output Driver Chart Explanation:

Reset time is 210mS C: PP PP = Push pull output

VDD threshold vol tage is 2.7V D: OD OD = Open drain output

No temperature shut down Polarity

RESET = Active hi gh

RESETB

RESE T

RESET

cha racteristic of

RESET or RESETB pin

Polarity

RESETB

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

n Absolute Maximum Ratings

n Recommended Operating Conditions

n Thermal Information

Caution: Stress above the listed absolute rating may cause permanent damage to the device

Ambient Tem perat ure R ange

Junction Temperature

Su pply Vol t age

Parameter

-40 to +85 oC

- 40 t o + 125 oC

Stor age Temper at ure - 65 t o 150 OC

Rating

1. 6 - 5 V

Maximum Unit

20 mA

100 V/µs

Parameter

Supply Voltage

ESD Cl assificat ion

Rate of Rise, VDD

Outpu t Current, RESET, ResetB

In pu t Current, VDD

Maximum Unit

325

180

350

650

150 oC

300 oC

Parameter

M aximum Lead T em per at ur e ( 10 Sec)

M aximum Junct ion Temper at ure

oC / W

T h ermal R esistan ce (SOT-89)

Power Dissipation (SOT-23)

Power Dissipation (SOT-89)

T h ermal R esistan ce (SOT-23)

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

n n

n E lectrical Sp ecifications

C unless otherwise noted

PARAMETER SYMBOL MIN TYP MAX UNITS

15.5

3.0 µA

5.0

VTHNOM - 1.5% VTHNOM + 1.5%

VTHNOM - 2.0% VTHNOM + 2.0%

H ysteresis Range VHYST 20 mV

R ESET Threshold T em p co 30 ppm

RESET B Output Voltage Lo w VDD< Vth min

R ESET Output Voltage Low VDD>Vth max

RESETB O utput Voltage High VDD>Vth max

RESET O utput Voltage H ig h VDD<Vth min

VDD to Reset Delay TD1 40 200 µS

Version A 0.5 1.5 5 mS

Versio n D 15 30 50 m S

Version E 80 150 230 mS

Version F 140 210 500 mS

T em perature Shutdow n TOFF 80 oC

Temperature Shutdown Hysteresis THYS 20 oC

N ote1: T he data based on VTH=2.7V part type.

0.8VDD V

0.5 V

mVVTH

VRANGE V

IDD

VDD= VTH - 100mV, T A= -40 ~ 85OC

VDD R ang e*

Supply Current

Re set Th re shold

VOL

VOH

ISINK=1.2mA,

TA= -40~85OC

ISOURCE=0.5mA,

TA= -40~85OC

VRelease - VTH, note1

TEST CONDITIONS

TA=-40~85OC

VDD = 3.0V

VDD = 3.0V, TA=-40~85OC

TA=-40~85OC

Reset Timeout Period* TD2 TA= -40 ~ 8 5OC

AME8501 only

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

n AME8500/ 01 pin description

VDD

GND

Positive power supply. A reset is asserted

aft er thi s vol t age drops below a

predet erm ined level . Aft er V DD rises above

t hat l evel the res et output remai ns assert ed

unt i l the end of t he reset ti m eout period.

Ground

DescriptionName

RESETB/

RESET

This pin c an be ordered as RESET or

RESETB. RE SET is act ive high. RESETB

is acti ve l ow. It i s al so avai l abl e with an

open drai n or pushpul l output .

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

n Timing Diagram

n Applications information

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 dura-

tion to avoid triggering an unintended reset. As

shown in the graph shorter transients can have

larger amplitudes without triggering resets.

Supply Transients

100

120

140

0.01 0.1 1

Glitch Rejection

Glitch Duration (µ

µµ

µS)

Glitch Amplitude (V)

RESETB

RESET

50%

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

0.4

0.8

1.2

1.6

012345

vs. V

IDD (µ

µµ

µA)

(V)

C-40

-40-200 20406080100

TD1 Delay vs. Temperature

TD2 Delay (µ

µµ

µS)

Temperature (

0.1

0.2

0.3

0.4

0.5

-40 -20 0 20 40 60 80 100

Threshold Hysteresis vs.

Temperature

Hysteresis (% of VTH)

Temperature (

190

195

200

205

210

215

220

-45-5255585115

Temperature (0C)

Reset Time (mS)

Reset Time vs. Temperature

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

Temperature (0C)

Reset Vth (V)

Reset Vth vs. Temperature

AME8500AEETAF26

2.10

2.15

2.20

2.25

2.30

2.35

-45 -5 25 55 85 115

Tempera ture (0C)

Supply Current @ 5V (uA)

vs. Temperatrue

AME8500AEETAF26

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

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

Temperature (0C)

Reset VOL @ 0.8mA (V)

Reset VOL vs. Temperature

AME8500AEETAF26

Analog Microelectronics, Inc.

AME8500 / 8501 Micropower µµ

µµ

µP Reset Family

n Package Dimension

SOT-23

SOT-89

MIN MAX MIN MAX

A 1.40 1.60 0.0551 0.0630

A10.89 - 0.0350 -

b 0.36 0.52 0.0142 0.0205

b10.41 0.56 0.0161 0.0220

C 0.35 0.44 0.0138 0.0173

D 4.40 4.60 0.1732 0.1811

D11.35 1.83 0.0531 0.0720

HE - 4.25 - 0.1673

E 2.29 2.60 0.0902 0.1024

e 2.90 3.10 0.1142 0.1220

H 0.35 0.70 0.0138 0.0276

S1 1.40 1.60 0.0551 0.0630

SYMBOLS MILLIMETERS INCHES

MIN MAX MIN MAX

A 1.00 1.40 0.0394 0.0551

A10.00 0.15 0.0000 0.0059

A20.70 1.25 0.0276 0.0492

b 0.35 0.50 0.0138 0.0197

C 0.09 0.25 0.0035 0.0098

D 2.70 3.10 0.1063 0.1220

E 1.40 1.80 0.0551 0.0709

H 2.60 3.00 0.1024 0.1181

L 0.35 0.55 0.0138 0.0197

θ1

θ1θ1

θ1 0o9o0o9o

1.90 B SC 0.0748 B SC

SYMBOLS MILLIMETERS INCHES

Life Support Policy:

These products of Analog Microelectronics, Inc. are not authorized for use as critical components in life-

support devices or systems, without the express written approval of the president

of Analog Microelectronics, Inc.

Analog Microelectronics, 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.

 Analog Microelectronics, Inc. , December 2001

Document: 2007-DS8500/8501-F

Corporate Headquarters Asia Pacific Headquarters

Analog Microelectronics, Inc. AME, Inc.

3100 De La Cruz Blvd. Suite 201 2F, No. 187 Kang-Chien Road, Nei-Hu District

Santa Clara, CA. 95054-2046 Taipei 114, Taiwan, R.O.C.

Tel : (408) 988-2388 Tel : 886 2 2627-8687

Fax: (408) 988-2489 Fax: 886 2 2659-2989

www.analogmicro.com

E-Mail: info@analogmicro.com