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| 型号： | LM80CIMTX-32 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor |
| 中文描述： | 串行接口ACPI的兼容微处理器系统硬件监视器 |
| 文件页数： | 1/29页 |
| 文件大小： | 412K |
| 代理商： | LM80CIMTX-32 |
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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
2C 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
2C 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
2C 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
±1% (max)
n Temperature Error
25C to +125C
± 3C (max)
n Supply Voltage Range
2.8V to
5.75V
n Supply Current
Operating:
0.2 mA typ
Shutdown:
15 A typ
n ADC Resolution
8 Bits
n Temperature Resolution
0.5C
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.
WATCHDOG is a trademark of National Semiconductor Corporation.
I2C is a registered trademark of the Philips Corporation.
DS100040-1
# Indicates Active Low (“Not”)
June 1999
LM80
Serial
Interface
ACPI-Compatible
Microprocessor
System
Hardware
Monitor
1999 National Semiconductor Corporation
DS100040
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LM80CIMTX-5 | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| LM80CIMTX-5/NOPB | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| LM80CIMTX-52 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor |
| LM80EVAL | 功能描述:EVALUATION BOARD FOR LM80 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:PowerWise® 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 主要目的:电源管理，电池充电器 嵌入式:否 已用 IC / 零件:MAX8903A 主要属性:1 芯锂离子电池 次要属性:状态 LED 已供物品:板 |
| LM81 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor |
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