參數(shù)資料
型號: DS1615
元件分類: 溫度傳感器
英文描述: Temperature Recorder
中文描述: 溫度記錄儀
文件頁數(shù): 13/24頁
文件大?。?/td> 199K
代理商: DS1615
DS1615
13 of 24
TLIE -
Temperature Low Interrupt Enable - When set to a logic 1, this bit permits the Temperature Low
Flag (TLF) in the Status register to assert
INT
. When the TLIE bit is set to logic 0, the TLF bit does not
initiate the
INT
signal.
THIE -
Temperature High Interrupt Enable - When set to a logic 1, this bit permits the Temperature High
Flag (THF) in the Status register to assert
INT
. When the THIE bit is set to logic 0, the THF bit does not
initiate the
INT
signal.
AIE -
Alarm Interrupt Enable - When set to a logic 1, this bit permits the Alarm Flag (ALMF) in the
Status register to assert
INT
. When the AIE bit is set to logic 0, the ALMF bit does not initiate the
INT
signal.
STATUS REGISTER
MSb
TR
LSb
MEMCL
MIP
SIP
LOBAT
TLF
THF
ALMF
TR -
Temperature Ready This bit indicates the status of the temperature value in the Current Temperature
register after the Read Temperature command has been executed. When this bit is a logic 1, the DS1615
has completed the temperature measurement and has written a valid value to the Current Temperature
register. When this bit is a logic 0, the temperature measurement has not been completed. This bit is
cleared to 0 when the Read Temperature command is sent.
MEM CLR -
Memory Cleared This bit indicates that the datalog memory, histogram memory,
Temperature Alarm, Current Samples, Start Time Stamp, Start Delay, and Sample Rate registers are all
cleared to zero. MEM CLR is cleared to 0 when a datalog mission is started (i.e., MIP = 1).
MIP -
Mission in Progress This bit indicates the sampling status of the DS1615. If MIP is a logic 1, the
device is currently on a mission in which it is operating in the datalogging mode. The MIP bit is changed
to a logic 1 immediately following 1) the writing of a non-zero value to the Sample Rate register when
the SE bit is a 0 or 2) a 0.5 second pulse on the
ST
pin if the Sample Rate register contains a non-zero
value AND the SE bit is a 1.
If MIP is a logic 0, the DS1615 is not currently in datalogging mode. The MIP bit transitions from a
logic 1 to a logic 0 whenever datalogging is stopped. Datalogging is stopped when the DS1615 is cleared
via the clear bit and clear instruction or when any of the RTC or Control registers (with the exception of
the Status register) are written to during a mission. The MIP bit can also be written to a logic 0 by the
end user to stop datalogging. It cannot, however, be written to a logic 1.
SIP -
Sample in Progress This bit indicates that the DS1615 is currently in the process of acquiring a
temperature sample. When the SIP bit is 0, a temperature conversion is not currently in process and the
next conversion will not begin for at least 250 ms. When the SIP bit is a 1, a temperature conversion is in
progress and no registers or memory locations should be read or written. The SIP bit will be a 1 for a
maximum of 750 ms.
LOBAT -
Low Battery Flag - This bit reflects the status of the backup power source connected to the
V
BAT
pin. A logic one for this bit indicates an exhausted lithium energy source.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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DS1615S/T&R 制造商:Maxim Integrated Products 功能描述:IC RECORDER TEMP 5V 16-SOIC
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DS1615X 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Temperature Recorder