參數(shù)資料
型號(hào)： LM80CIMT-31
廠商： National Semiconductor Corporation
英文描述： Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
中文描述： 串行接口ACPI的兼容微處理器系統(tǒng)硬件監(jiān)視器
文件頁數(shù)： 1/29頁
文件大小： 435K
代理商： LM80CIMT-31
LM80
Serial Interface ACPI-Compatible Microprocessor System
Hardware Monitor
General Description
The LM80 provides 7 positive voltage inputs, temperature
measurement, fan speed measurement, and hardware
monitoring on an I
2
C
interface. The LM80 performs
WATCHDOG
comparisons of all measured values and an
open-drain interrupt output becomes active when any values
exceed programmed limits. A Chassis Intrusion input is pro-
vided to monitor and reset an external circuit designed to
latch a chassis intrusion event.
The LM80 is especially suited to interface to both linear and
digital temperature sensors. The 10 mV LSB and 2.56 volt
input range is ideal for accepting inputs from a linear sensor
such as the LM50. The BTI is used as an input from either
digital or thermostat sensors such as LM75 and LM56.
The LM80’s 2.8V to 5.75V supply voltage range, low supply
current, and I
2
C interface make it ideal for a wide range of
applications. These include hardware monitoring and protec-
tion applications in personal computers, electronic test
equipment, and office electronics.
Features
n
Temperature sensing
n
7 positive voltage inputs
n
2 programmable fan speed monitoring inputs
n
10 mV LSB and 2.56V input range accepts outputs from
linear temperature sensors such as the LM50
n
Chassis Intrusion Detector input
n
WATCHDOG comparison of all monitored values
n
Separate input to show status in Interrupt Status
Register of additional external temperature sensors such
as the LM56 or LM75
n
I
2
C Serial Bus interface compatibility
n
Shutdown mode to minimize power consumption
n
Programmable RST_OUT/OS pin: RST_OUT provides a
Reset output; OS provides an Interrupt Output activated
by an Overtemperature Shutdown event
Key Specifications
n
Voltage monitoring Error
n
Temperature Error
25C to +125C
n
Supply Voltage Range
±
1% (max)
±
3C (max)
2.8V to
5.75V
n
Supply Current
Operating:
Shutdown:
0.2 mA typ
15 μA typ
8 Bits
0.5C
n
ADC Resolution
n
Temperature Resolution
Applications
n
System Thermal and Hardware Monitoring for Servers
and PCs
n
Office Electronics
n
Electronic Test Equipment and Instrumentation
Typical Application
TRI-STATE
is a registered trademark of National Semiconductor Corporation.
is a trademark of National Semiconductor Corporation.
WATCHDOG
is a registered trademark of the Philips Corporation.
DS100040-1
#
Indicates Active Low (“Not”)
June 1999
L
1999 National Semiconductor Corporation
DS100040
www.national.com
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LM80CIMT5 制造商:Texas Instruments 功能描述:
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LM80CIMT-5/NOPB 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
LM80CIMT-5/NOPB 制造商:Texas Instruments 功能描述:Temperature Sensor IC
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