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參數(shù)資料
| 型號(hào)： | 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)： | 10/24頁 |
| 文件大?。?/td> | 199K |
| 代理商： | DS1615 |
DS1615
10 of 24
After a temperature conversion is completed, the number of the bin to be updated is determined by
dropping the two least significant bits of the binary temperature value. Thus, bin 0 will be updated with
every temperature reading from -40
°
C to -38.5
°
C. In the same way, bin 1 is associated with the range of -
38
°
C to -36.5
°
C. Bin 62, finally, counts temperature values in the range of +84
°
C to 85.0
°
C. Since the
device will not generate temperature values higher than 85.0
°
C, bin 62 covers only three temperature
values. The memory for a potential 64
th
bin exists, but will always read 0s.
Since each data bin contains two bytes, a total of 65,535 samples can be accumulated. If more samples
are measured, the data bin will remain at the maximum value. In other words, the data bin value will not
roll-over in the event of an overrun.
TEMPERATURE ALARM LOGGING
For some applications it may be essential to record exactly when a temperature sample exceeds a
predefined tolerance band and for how long the temperature violation remained.
A tolerance band is specified by means of the Temperature Alarm registers, addresses 000Bh and 000Ch.
The user can set a high and a low temperature threshold. As long as the temperature samples stay within
this tolerance band (i.e., are higher than the low threshold and lower than the high threshold), the DS1615
will not record any temperature alarm. If the temperature violates the temperature band, the DS1615 will
generate an alarm and set either the Temperature High Flag (THF) or the Temperature Low Flag (TLF) in
the Status register (address 0014h). In addition, the device generates a time stamp of when the alarm
occurred and records the duration of the alarming condition. The INT pin will be asserted by a high
temperature alarm if the Temperature High Interrupt Enable (THIE) is set and will be asserted by a low
temperature alarm if the Temperature Low Interrupt Enable (TLIE) is set.
The device stores a time stamp of a violating condition by copying contents of the three-byte Current
Samples Counter when the alarm occurred. The least significant byte is stored at the lower address. One
address higher than each time stamp, the DS1615 maintains a one byte duration counter that stores the
number of times the temperature was found to be beyond the threshold. If this counter has reached its
limit after 255 consecutive temperature readings and the temperature has not yet returned to a level within
the tolerance band, the device will issue another time stamp at the next higher address and open another
counter to record the duration. If the temperature returns to normal before the counter has reached its
limit, the duration counter of the particular time stamp will not increment any further. Should the
temperature again cross this threshold, another time stamp will be recorded and its associated counter will
increment with each temperature reading outside the tolerance band. This algorithm is implemented for
the low as well as for the high temperature threshold.
Time stamps and durations where the temperature violates the low temperature threshold are stored in the
address range 0220h to 024Fh (48 bytes). The memory address range 0250h to 027Fh (48 bytes) is
reserved for time stamps and duration where the temperature exceeds the high temperature threshold.
This allocation allows to record 24 individual alarm events and periods (12 periods for too hot and 12 for
too cold). The date and time of each of these periods can be determined from the Start Time Stamp and
the time distance between each temperature reading. Figure 2c illustrates the Alarm Time Stamps and
Durations register.
INSPEC
AND
OUTSPEC
PINS
Two special output pins,
INSPEC
and
OUTSPEC
, are intended to output the status of the DS1615. More
specifically, these pins can be used to control the illumination of LEDs. For example, the
INSPEC
pin can
be used to pulse a green LED and the
OUTSPEC
pin can be used to pulse a red LED. When the end user
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1615K | 功能描述:KIT EVAL TEMPERATURE RECORDER RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時(shí)/停產(chǎn)零件編號(hào) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關(guān)產(chǎn)品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP |
| DS1615S | 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 |
| DS1615S/T&R | 制造商:Maxim Integrated Products 功能描述:IC RECORDER TEMP 5V 16-SOIC |
| DS1615S/T&R | 功能描述:IC RECORDER TEMP 5V 16-SOIC RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 實(shí)時(shí)時(shí)鐘 系列:- 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 類型:時(shí)鐘/日歷 特點(diǎn):警報(bào)器，閏年，SRAM 存儲(chǔ)容量:- 時(shí)間格式:HH:MM:SS（12/24 小時(shí)） 數(shù)據(jù)格式:YY-MM-DD-dd 接口:SPI 電源電壓:2 V ~ 5.5 V 電壓 - 電源，電池:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN EP 包裝:管件 |
| DS1615X | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Temperature Recorder |
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