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參數(shù)資料
| 型號： | LM87 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing |
| 中文描述： | 串行接口系統(tǒng)硬件監(jiān)控與遠(yuǎn)程二極管溫度傳感器 |
| 文件頁數(shù)： | 3/32頁 |
| 文件大?。?/td> | 470K |
| 代理商： | LM87 |
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Pin Description
(Continued)
Pin
Name(s)
Pin
Number
8
Number
of Pins
1
Type
Description
GND
GROUND
The system ground pin. Internally connected to all circuitry. The
ground reference for all analog inputs and the DAC output. This pin
needs to be connected to a low noise analog ground plane for
optimum performance of the DAC output.
+3.3 V V
+
power. Bypass with the parallel combination of 10 μF
(electrolytic or tantalum) and 0.1 μF (ceramic) bypass capacitors.
Interrupt active low open-drain output. This output is enabled when
Bit 1 in the Configuration Register is set to 1. The default state is
disabled. It has an on-chip 100 k
pullup resistor. Alternately used
as an active low output to signal SMBus Alert Response Protocol.
0 V to +2.5 V amplitude 8-bit DAC output. When forced high on
power up by an external voltage the NAND Tree Test mode is
enabled which provides board-level connectivity testing.
Master Reset, 5 mA driver (open-drain), active low output with a 20
ms minimum pulse width. Available when enabled via Bit 4 in the
Configuration register. It also acts as an active low power on
RESET input. It has an on-chip 100 k
pullup resistor.
Analog input for monitoring the cathode of the first external
temperature sensing diode.
Analog input for monitoring the anode of the first external
temperature sensing diode.
Analog input for monitoring +12 V.
Analog input for monitoring +5 V.
Digitally programmable analog input for monitoring Vccp2 (0 to 3.6
V input range) or the cathode of the second external temperature
sensing diode.
Digitally programmable analog input for monitoring +2.5 V or the
anode of the second external temperature sensing diode.
Analog input (0 to 3.6 V input range) for monitoring Vccp1, the core
voltage of processore 1.
Digitally programmable dual function digital inputs. Can be
programmed to monitor the VID pins of the Pentium/PRO and
Pentium II processors, that indicate the operating voltage of the
processor, or as interrupt inputs. The values are read in the
VID/Fan Divisor Register and the VID4 Register. These inputs have
on-chip 100 k
pullup resistors.
V
+
(+2.8 V to
+3.8 V)
INT
#
/ALERT
#
9
1
POWER
10
1
Digital Output
DACOut/NTEST_IN
11
1
Analog
Output/Digital
Input
Digital I/O
RESET#
12
1
D1
13
1
Analog Input
D1+
14
1
Analog Input
+12Vin
+5Vin
Vccp2/D2
15
16
17
1
1
1
Analog Input
Analog Input
Analog Input
+2.5Vin/D2+
18
1
Analog Input
Vccp1
19
1
Analog Input
VID4/IRQ4-
VID0/IRQ0
20-24
5
Digital Inputs
TOTAL PINS
24
#
Indicates Active Low (“Not”)
L
www.national.com
3
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| LM87CIMT/NOPB | 功能描述:板上安裝溫度傳感器 Hdw Mon & 2 Remote Temp Sens RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| LM87CIMTX | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
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