- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄367820 > PCI-WDT UEBERWACHUNGSKARTE PLUG AND PLAY PDF資料下載
參數(shù)資料
| 型號： | PCI-WDT |
| 英文描述： | UEBERWACHUNGSKARTE PLUG AND PLAY |
| 中文描述： | UEBERWACHUNGSKARTE即插即用 |
| 文件頁數(shù)： | 18/31頁 |
| 文件大?。?/td> | 334K |
| 代理商： | PCI-WDT |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁
Page 8
Programming Details
Chapter 3
Page 8
01270202.doc
Blue Chip Technology Ltd.
Supply Monitors
The supply monitor circuits can be programmed to detect over and undervoltage
on the supply rails. One negative and three positive rails are monitored as
standard. The LM78 supports an 8 bit ADC with a resolution of 16mV over an
input range of 0 - 4.08 volts. For this reason the +5 Volt and the
±
12 Volt
supplies are attenuated. Consequently the LSB weighting for each supply will
differ depending on the attenuation. The following table list each of the supply
attenuation factors and the corresponding LSB value.
Supply Voltage
+3.3 Volts
5 Volts
+12 Volts
-12 Volts
Voltage to ADC input
3.3 Volts
2.98 Volts
3.00 Volts
3.00 Volts
LSB Weighting
16mV/bit
26.8mV/bit
64mV/bit
64mV/bit
The converted results can be read from the corresponding Value RAM
locations within the LM78. Any rail suffering an out of limit excursion can be
read through Interrupt status registers 1 and 2. The under and over voltage
limits can be programmed into the corresponding Value RAM locations.
Fan Monitors
The fan monitor circuits can be enabled and disabled under software control to
accommodate a variety of system configurations using the LM78 address
registers 45h & 46h. Each fan monitor has software selectable count limits
which can be accessed through Value RAM locations 3Bh & 3Ch & 3Dh. In
addition fan monitors 1 and 2 can be configured for different nominal fan
speeds of 8800, 4400, 2200 and 1100 rpm through LM78 register address 47h.
Fan monitor 3 is fixed for a nominal speed of 4400 rpm.
Temperature Monitor
The PCI-WD provides on board temperature monitoring to indicate when an
excessive temperature rise has occurred. The temperature data is represented by
an 8-bit, two’s complement word with an LSB of 1
°
C The upper temperature
limit and the temperature hysteresis can be programmed by the user through the
LM78 Value RAM locations 39h & 3Ah.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCI-WIN2000 | WINDOWS 2000 FOR PCI DATA ACQU |
| PCI01 | Periphelar Coupled Input NPN |
| PCI350-4801NT | 350 Watt CompactPCI Power Supply |
| PCI350-4801SL | 350 Watt CompactPCI Power Supply |
| PCI350-4801SN | 350 Watt CompactPCI Power Supply |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCI-WIN2000 | 制造商:BLUE CHIP TECHNOLOGY 功能描述:SOFTWARE WIN 2K FOR PCI DATA ACQU |
| PCJ | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Miniature PCB Relay PCJ |
| PCJ_09 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Miniature PCB Relay PCJ |
| PCJ0E102MCL1GS | 功能描述:鋁有機聚合物電容器 2.5volts 1000uF 105c 8x8 RoHS:否 制造商:Panasonic Electronic Components 電容:470 uF 容差:20 % 電壓額定值:2.5 V ESR:4.5 mOhms 工作溫度范圍:- 40 C to + 105 C 端接類型:SMD/SMT 外殼直徑: 外殼長度:7.3 mm 外殼寬度:4.3 mm 外殼高度:1.9 mm 封裝:Reel |
| PCJ0E122MCL1GS | 功能描述:鋁有機聚合物電容器 2.5volts 1200uF SMD Low ESR RoHS:否 制造商:Panasonic Electronic Components 電容:470 uF 容差:20 % 電壓額定值:2.5 V ESR:4.5 mOhms 工作溫度范圍:- 40 C to + 105 C 端接類型:SMD/SMT 外殼直徑: 外殼長度:7.3 mm 外殼寬度:4.3 mm 外殼高度:1.9 mm 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復。