AP1701AW ETC, AP1701AW Datasheet

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AP1701AW

Manufacturer Part Number
AP1701AW
Description
3-Pin Microprocessor Reset Circuits
Manufacturer
ETC
Datasheet
1.AP1701AW.pdf (8 pages)

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3-Pin Microprocessor Reset Circuits
- Precision Monitoring of +3V, +3.3V, and +5V
- Fully Specified Over Temperature
- Available in Three Output Configurations
- Push-Pull RESET Low Output (AP1701/3)
- Push-Pull RESET High Output (AP1702/4)
- 140ms min Power-On Reset Pulse Width
- 12µA Supply Current
- Guaranteed Reset Valid to VCC = +1V
- Power Supply Transient Immunity
- No External Components
- 3-pin SOT23 package
- Computers
- Controllers
- Intelligent Instruments
- Critical µP and µC Power Monitoring
- Portable/Battery Powered Equipment
- Automotive
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Power-Supply Voltages
RESET
RESET
Pin Assignments
Features
Applications
(RESET)
(RESET)
GND
GND
1
1
2
2
2
2
(Top View)
(Top View)
SOT-23
SOT-23
AP1701
AP1702
AP1703
AP1704
3
3
V
V
CC
CC
1/8
The AP1701/2/3/4 are used for microprocessor (µP)
supervisory circuits to monitor the power supplies in
µP and digital systems. They provide excellent
circuit reliability and low cost by eliminating external
components and adjustments when used with +5V,
+3.3V, +3.0V powered circuits.
These circuits perform a single function: they assert
a reset signal whenever the VCC supply voltage
declines below a preset threshold, keeping it
asserted for at least 140ms after VCC has risen
above the reset threshold. Reset thresholds
suitable for operation with a variety of supply
voltages are available. The AP1701/2/3/4 have
push pull outputs. The AP1701/3 have an active low
RESET output, while the AP1702/4 has an active
high RESET output. The reset comparator is
designed to ignore fast transients on VCC, and the
outputs are guaranteed to be in the correct logic
state for VCC down to 1V. Low supply current
makes the AP1701/2/3/4 ideal for use in portable
equipment. The AP1701/2/3/4 is available in a 3-pin
SOT23 package.
(RESET)
General Description
Pin Descriptions
RESET
Name
GND
V
CC
Ground
Reset output pin
L: for AP1701/3
H: for AP1702/4
Operating voltage input
AP1701/2/3/4
Description
Rev.1.0 May. 7, 2004

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AP1701AW Summary of contents

Page 1

Microprocessor Reset Circuits Features - Precision Monitoring of +3V, +3.3V, and +5V Power-Supply Voltages - Fully Specified Over Temperature - Available in Three Output Configurations - Push-Pull RESET Low Output (AP1701/3) - Push-Pull RESET High Output (AP1702/4) - 140ms ...

Page 2

Microprocessor Reset Circuits Ordering Information Enable 1: Active-Low 2: Active-High 3: Active-Low 4: Active-High Absolute Maximum Ratings Symbol V Terminal Voltage (with respect to GND RESET, RESET (push-pull) RESET I Input Current Output ...

Page 3

Microprocessor Reset Circuits Electrical Characteristics Symbol Parameter V V Range Supply Current AP1701/2/3/4A AP1701/2/3/4B AP1701/2/3/4C Reset Threshold T =25ºC AP1701/2/3/ AP1701/2/3/4E AP1701/2/3/4F Reset Threshold ...

Page 4

Microprocessor Reset Circuits Function Description A microprocessor’s (µP’s) reset input starts the µ known state. The AP1701/2/3/4 assert reset to prevent code-execution errors during power-up, power-down, or brownout conditions. They assert a reset signal whenever the VCC ...

Page 5

Microprocessor Reset Circuits Function Block V REF Performance Characteristics -50 -40 -30 -20 - 100 110 120 Temp ( C ) ...

Page 6

Microprocessor Reset Circuits Timing Diagram V CC Active Low Active High 3500 3000 2500 2000 1500 1000 500 0 0 Anachip Corp. www.anachip.com. Giltch Immunity 3000 900 270 140 100 200 ...

Page 7

Microprocessor Reset Circuits Marking Information Identification code ( See appendix ) Part Number AP1701A AP1701B AP1701C AP1701D AP1701E AP1701F AP1702A AP1702B AP1702C AP1702D AP1702E AP1702F Anachip Corp. www.anachip.com.tw (Top View) 3 Blank: normal Lead ...

Page 8

Microprocessor Reset Circuits Package Information Package Type: SOT23- Dimensions In Millimeters Symbol Min. A 1.00 A1 0.00 A2 1.00 b 0.35 C 0.10 D 2.70 E 1.40 e 1.70 HE 2.40 L 0.30 Anachip Corp. www.anachip.com.tw e ...

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