欢迎访问ic37.com |
会员登录 免费注册
发布采购

ASM162LCUSF/T 参数 Datasheet PDF下载

ASM162LCUSF/T图片预览
型号: ASM162LCUSF/T
PDF下载: 下载PDF文件 查看货源
内容描述: μP监控电路 [μP Supervisory Circuit]
分类和应用: 电源电路电源管理电路光电二极管监控
文件页数/大小: 9 页 / 184 K
品牌: PULSECORE [ PulseCore Semiconductor ]
 浏览型号ASM162LCUSF/T的Datasheet PDF文件第2页浏览型号ASM162LCUSF/T的Datasheet PDF文件第3页浏览型号ASM162LCUSF/T的Datasheet PDF文件第4页浏览型号ASM162LCUSF/T的Datasheet PDF文件第5页浏览型号ASM162LCUSF/T的Datasheet PDF文件第6页浏览型号ASM162LCUSF/T的Datasheet PDF文件第7页浏览型号ASM162LCUSF/T的Datasheet PDF文件第8页浏览型号ASM162LCUSF/T的Datasheet PDF文件第9页  
April 2008
rev 1.5
ASM161/ASM162
µP Supervisory Circuit
General Description
The ASM161 and ASM162 are cost effective, low power
supervisory circuits that monitor power supplies in
microprocessor, microcontroller and digital systems. If the
power supply drops below the reset threshold level, a
reset is asserted and remains asserted for atleast 800ms
after V
CC
has risen above the reset threshold. An
improved manual reset architecture gives the system
designer additional flexibility.
The debounced manual reset input is negative edge
triggered. The reset pulse period generated by a MR
transition is a minimum of 800 ms and a maximum of
2 sec duration. In addition, The MR input signal is
blocked for an additional 49µS minimum after the reset
pulse
ends.
During
the
MR
disable
period,
the
microcontroller is guaranteed a time period free of
additional manual reset signals. During this period DRAM
contents can be refreshed or other critical system tasks
undertaken.
operated
Low
power
consumption
3V
makes
the
ASM161/162 ideal for use in portable and battery
equipments.
With
supplies
power
consumption is 8µW typically and 30µW maximum. The
ASM161 has an open-drain, active-LOW RESET output
and requires an external pull-up resistor. The ASM162
has an active HIGH RESET output.
The ASM161/162 are offered in compact 4-pin SOT-143
packages. No external components are required to trim
threshold voltage for monitoring different supply voltages.
With six different factory set, reset, threshold ranges from
2.63V to 4.63V, the ASM161/162 are suitable for
monitoring 5V, 3.6V and 3.0V supplies. The ASM161/162
are available in temperature ranges 0°c to 70°c and -40°c
to +85°c.
Reset Threshold
Part Suffix
L
M
J
T
S
R
Voltage (V)
4.63
4.38
4.00
3.08
2.93
2.63
Key Features
• Edge triggered manual reset input
• single pulse output
• 49µS minimum MR disable period after reset
• CMOS/TTL logic or switch interface
• Debounced input
• Low supply current extends battery life
6µA / 15µA typ/max at 5.5V
4.5µA / 10µA typ/max at 3.6V
• Long reset period
• 0.8 sec minimum, 2 sec maximum
• Two reset polarity options
ASM161: Active LOW, open-drain
ASM162: Active HIGH
• Pinout matches the ASM811/812
• Small 4-Pin SOT-143 package
• Two temperature ranges: 0°c to 70°c and -40°c to +85°c
Applications
• PDAs
• Appliances
• Computers and embedded controllers
• Wireless communication systems
• Battery operated and intelligent instruments
• Automotive systems
• Safety systems
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200 Campbell, CA 95008
Tel: 408-879-9077
Fax: 408-879-9018
www.pulsecoresemi.com
Notice: The information in this document is subject to change without notice.