ASM809JEUR-T ALSC [Alliance Semiconductor Corporation], ASM809JEUR-T Datasheet

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ASM809JEUR-T

Manufacturer Part Number
ASM809JEUR-T
Description
3 Pin Microcontroller Power Supply Supervisor
Manufacturer
ALSC [Alliance Semiconductor Corporation]
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
ASM809JEUR-T
Manufacturer:
ALLIANCE
Quantity:
20 000
October 2003
rev 1.0
General Description
The ASM809/ASM810 are cost effective 3.0V, 3.3V and 5.0V
power supply supervisor circuits optimized for low-power
microprocessor (µP), microcontroller (µC) and digital systems.
They provide a reset output during power-up, power-down and
brown-out conditions. They provide excellent reliability by
eliminating external components and adjustments. The
ASM809/810 are improved drop-in replacements for the Maxim
MAX809/810 and feature 60% lower supply current.
A reset signal is issued if the power supply voltage drops below
a preset reset threshold and is asserted for at least 140ms after
the supply has risen above the reset threshold. The ASM809
has an active-low RESET output that is guaranteed to be in the
correct logic state for V
active-high RESET output. The reset comparator is designed to
ignore fast transients on V
Low supply current makes the ASM809/ASM810 ideal for use
in
ASM809/ASM810 are available in a compact, industry standard
3-pin SOT23 package.
Applications
Embedded controllers
Portable/Battery operated systems
Intelligent instruments
Wireless communication systems
PDAs and handheld equipment
Computers
portable
and
2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com
battery
CC
CC
down to 1.1V. The ASM810 has an
.
operated
Notice: The information in this document is subject to change without notice
3 Pin Microcontroller Power Supply Supervisor
equipment.
Alliance Semiconductor
The
Six voltage thresholds are available to support 3V to 5V
systems:
Features:
Typical Operating Circuit
Monitor 5V, 3.3V and 3V supplies
140ms min. reset pulse width
Active-low reset valid with 1.1V supply (ASM809)
Small 3-pin SOT-23 package
No external components
Specified over full temperature range - -40°C to 105°C
Suffix
RESET THRESHOLD
V
M
R
T
S
L
J
CC
(RESET)
GND
RESET
V
CC
Voltage
4.63
4.38
4.00
3.08
2.93
2.63
ASM809, ASM810
RESET
Input
GND
V
CC
(RESET)
µP

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ASM809JEUR-T Summary of contents

Page 1

October 2003 rev 1.0 3 Pin Microcontroller Power Supply Supervisor General Description The ASM809/ASM810 are cost effective 3.0V, 3.3V and 5.0V power supply supervisor circuits optimized for low-power microprocessor (µP), microcontroller (µC) and digital systems. They provide a reset output ...

Page 2

October 2003 rev 1.0 Pin Diagram SOT23 GND 1 ASM809 (ASM810) 2 RESET (RESET) Pin Description Pin # Pin Name ASM809 ASM810 1 - GND Ground. RESET is asserted LOW RESET threshold. RESET is asserted HIGH ...

Page 3

October 2003 rev 1.0 Application Information Negative V Transients CC The ASM809/810 protect µPs from brownouts and low V Short duration transients of 100mV amplitude and 20µs or less duration typically do not cause a false RESET. Valid Reset with ...

Page 4

October 2003 rev 1.0 Absolute Maximum Ratings Table 1: Parameter Pin Terminal Voltage With Respect To Ground V CC RESET, RESET Input current Output current: RESET, RESET Rate of Rise Note: These are stress ...

Page 5

October 2003 rev 1.0 Electrical Characteristics: Unless otherwise noted over the full voltage range Typical values 25° for L/M/J devices Symbol Parameter T = 0°C to 70°C ...

Page 6

October 2003 rev 1.0 Symbol Parameter T = -40°C to 85°C A Reset Active Timeout Period T = 85°C to 105° Low RESET Output Voltage CC OL (ASM809 ...

Page 7

October 2003 rev 1.0 Typical Operating Characteristics Unless otherwise noted over the full voltage range for T/S devices and for R devices. CC Supply Current vs Tem perature ASM809T ...

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October 2003 rev 1.0 Package Dimensions Inches Millimeters Min Max Min Plastic SOT-23 (3-Pin) A 0.031 0.050 0.80 A1 0.004 0.010 0.10 B 0.015 0.020 0.37 C 0.003 0.007 0.085 D 0.110 0.120 2.80 E 0.047 0.055 1.20 e 0.035 ...

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... October 2003 rev 1.0 Ordering Information: 1 Reset Threshold (V) Part Number ASM809LEUR-T 4.63 ASM809MEUR-T 4.38 ASM809JEUR-T 4.00 ASM809TEUR-T 3.08 ASM809SEUR-T 2.93 ASM809REUR-T 2.63 ASM810LEUR-T 4.63 ASM810MEUR-T 4.38 ASM810JEUR-T 4.00 ASM810TEUR-T 3.08 ASM810SEUR-T 2.93 ASM810REUR-T 2.63 Notes: 1. Tape and Reel packaging is indicated by the -T designation. Related Products: Max Supply Current Package Pins Manual RESET input Package Type ...

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Alliance Semiconductor Corporation 2575, Augustine Drive, Santa Clara, CA 95054 Tel: 408 - 855 - 4900 Fax: 408 - 855 - 4999 www.alsc.com © Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are ...

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