ASM811JEUS-T ALSC [Alliance Semiconductor Corporation], ASM811JEUS-T Datasheet

no-image

ASM811JEUS-T

Manufacturer Part Number
ASM811JEUS-T
Description
4 Pin P Voltage Supervisor with Manual Reset
Manufacturer
ALSC [Alliance Semiconductor Corporation]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ASM811JEUS-T
Manufacturer:
ALLIANCE
Quantity:
20 000
October 2003
rev 1.0
General Description
The ASM811/ASM812 are cost effective low power supervisors
designed to monitor voltage levels of 3.0V, 3.3V and 5.0V
power
microcontroller (µC) and digital systems. They provide excellent
reliability by eliminating external components and adjustments.
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 ASM811
has an active-low output RESET that is guaranteed to be in the
correct state for V
high RESET output. The reset comparator is designed to ignore
fast transients on V
the user to manually reset the systems to bring them out of
locked state.
Low power consumption makes the ASM811/ASM812 ideal for
use in portable and battery operated equipment. The ASM811/
ASM812 are available in a compact 4-pin SOT-143 package
and thus use minimal board space.
Applications
Computers and Controllers
Embedded controllers
Portable/Battery operated systems
Intelligent instruments
Wireless communication systems
PDAs and handheld equipment
Automotive systems
Safety Systems
supplies
2575 Augustine Drive . Santa Clara, CA 95054 . Tel: 408.855.4900 . Fax: 408.855.4999 . www.alsc.com
CC
CC
in
down to 1.1V. The ASM812 has an active-
. A debounced manual reset input allows
low-power
Notice: The information in this document is subject to change without notice
4 Pin µP Voltage Supervisor with Manual Reset
microprocessor
(µP),
Alliance Semiconductor
Six voltage thresholds are available to support 3V to 5V
systems:
Features
Typical Operating Circuit
New 4.0V threshold option
9µA supply current
Monitor 5V, 3.3V and 3V supplies
Manual reset input
140ms min. reset pulse width
Guaranteed over temperature
Active-low reset valid with 1.1V supply (ASM811)
Small 4-pin SOT-143 package
No external components
Power-supply transient-immune design
Suffix
RESET THRESHOLD
V
M
R
T
S
L
J
CC
MR
(RESET)
GND
RESET
V
CC
Voltage
4.63
4.38
4.00
3.08
2.93
2.63
ASM811, ASM812
RESET
Input
GND
V
CC
(RESET)
µP

Related parts for ASM811JEUS-T

ASM811JEUS-T Summary of contents

Page 1

October 2003 rev 1.0 4 Pin µP Voltage Supervisor with Manual Reset General Description The ASM811/ASM812 are cost effective low power supervisors designed to monitor voltage levels of 3.0V, 3.3V and 5.0V power supplies in low-power microcontroller (µC) and digital ...

Page 2

October 2003 rev 1.0 Pin Diagram: SOT143 GND 1 ASM811 (ASM812) 2 (RESET) RESET Pin Description Pin # Pin Name ASM811 ASM812 1 1 GND Ground. RESET is asserted LOW RESET the Threshold. In addition, RESET ...

Page 3

October 2003 rev 1 MRST 5V RESET 0V 5V RESET 0V Figure 1: Reset Timing and Manual Reset (MR) Reset Output Operation In µP / µC systems it is important ...

Page 4

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

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 V Input Voltage Range CC ...

Page 6

October 2003 rev 1.0 Symbol Parameter MR Glitch Immunity MR to RESET Propogation t MD Delay Input Threshold Input Threshold Pullup Resistance Low RESET Output Voltage V OL (ASM811) ...

Page 7

October 2003 rev 1.0 Typical Operating Characteristics Unless otherwise noted over the full voltage range for L/M/J devices 3.3V for T/S devices and Supply Current vs Tem perature ...

Page 8

October 2003 rev 1.0 Package Dimensions: Inches Millimeters Min Max Min A 0.031 0.047 0.787 A1 0.001 0.005 0.025 B 0.014 0.022 0.356 B1 0.030 0.038 0.762 C 0.0034 0.006 0.086 D 0.105 0.120 2.667 E 0.047 0.055 1.194 e ...

Page 9

... October 2003 rev 1.0 Ordering Information: 1 Reset Threshold (V) Part Number ASM811 ACTIVE LOW RESET ASM811LEUS-T ASM811MEUS-T ASM811JEUS-T ASM811TEUS-T ASM811SEUS-T ASM811REUS-T ASM812 ACTIVE HIGH RESET ASM812LEUS-T ASM812MEUS-T ASM812JEUS-T ASM812TEUS-T ASM812SEUS-T ASM812REUS-T Notes: 1. Tape and Reel packaging is indicated by the -T designation. Related Products: Max Supply Current ...

Page 10

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 ...

Related keywords