Datasheet > AME8501BEFTBD44

AME8501BEFTBD44

更新时间： 2024-11-22 23:12:35

品牌	Logo	应用领域
安茂微 - AME		/
页数	文件大小	规格书
14页	411K
描述
UProcessor Supervisory

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数据手册

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AME8501BEFTBD44 数据手册

AME, Inc.

µProcessor Supervisory

AME8500 / 8501

n General Description

n Typical Operating Circuit

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.

V_CC

AME8500

Processor

RESET

Input

RESET / RESET

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 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 for supply voltages greater than 1V.

GND

Note: * External pull-up resistor is required if open-

drain output is used. 10 kΩ is recommended.

The AME8501 includes all the above functionality plus

an overtemperature shutdown function. When the ambi-

ent temperature exceeds 80^oC a reset is asserted and

remains asserted until the temperature falls below 60^oC.

n Block Diagram

AME8500 with Push-Pull RESET

Space saving SOT23 packages and micropower qui-

escent current (<3.0µA) make this family a natural for

portable battery powered equipment.

V_DD

n Features

l Small packages: SOT-23, SOT-89

Delay

RESET

l 11 voltage threshold options

V_REF

l Tight voltage threshold tolerance ---±1.50%

l 5 reset interval options

GND

l 4 output configuration options

l Wide temperature range -------- -40^oC to 85^oC

l Low temperature coefficient --- 100ppm/^oC(max)

l Low quiescent current < 3.0µA

l Thermal shutdown option (AME8501)

AME8500 with Push-Pull RESET

V_DD

n Applications

l Portable electronics

RESET

Delay

l Power supplies

V_REF

l Computer peripherals

l Data acquisition systems

l Applications using CPUs

l Consumer electronics

GND

12 3 4 5 6 7...14

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