參數(shù)資料
型號(hào)： DS1615X
英文描述： Temperature Recorder
中文描述： 溫度記錄儀
文件頁(yè)數(shù)： 18/24頁(yè)
文件大?。?/td> 199K
代理商： DS1615X
DS1615
18 of 24
CRC HARDWARE DESCRIPTION AND POLYNOMIAL
Figure 4
Communication Reset (Asynchronous Mode)
When transmitting the command, parameters, or data to the DS1615, it is possible that communication
might be interrupted. For example, the user might accidentally disconnect the cable linking the device to
the host computer. To insure that communication always starts at a known state when in the
asynchronous mode, the DS1615 will reset the communication if it senses a problem. This is
accomplished via two methods. First, if during the transmission of a byte of data to the DS1615, the stop
bit is not received, communication will be reset. The lack of a valid stop bit indicates that that particular
byte of data was not received correctly. Second, if more then 10-bit times expire between the reception of
one byte of data and the reception of the next required byte, then communication will be reset.
Automatic resetting of communication is not required when communicating in the synchronous mode.
This is because of the function of the
RST
pin. Pulling
RST
low resets the serial communication of the
DS1615.
DS1615 COMMANDS
All communication with the DS1615 is accomplished by writing a command to the device followed by
parameter byte/s if required. Table 3 illustrates the commands sup-ported by the DS1615.
DS1615 COMMANDS
Table 3
COMMAND
FUNCTION
22h
Write Byte
33h
Read Page
44h
Specification
DESCRIPTION
Write one byte to RTC, Control registers, and User NV RAM
Read Page
Poll status of temperature extremes
Test
Read
55h
Temperature
Clear
Memory
Instructs DS1615 to immediately measure the temperature and store the
result in the Current Temperature register when MIP = 0.
This command clears the datalog, histogram, Temperature Alarm,
Current Samples, Start Time Stamp, Start Delay, and Sample Rate
registers when the Clear Enable bit (CLR) in the Control register is set
to a one.
A5h
The DS1615 commands are summarized below. Note that if an invalid command is issued, no action is
taken by the device.
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PDF描述
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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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DS1616S 制造商:DALLAS 制造商全稱(chēng):Dallas Semiconductor 功能描述:Temperature and Three Input MUX’ed 8-bit Data Recorder
DS-1616ZJ 制造商:Hikvision USA 功能描述:Pendant Wall Mount Bracket 3.8In X 7.65In X 12.2In 制造商:HIKVISION 功能描述:PENDANT WALL MOUNT BRACKET 3.8IN X 7.65IN X 12.2IN
DS16177D 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:4-Bit Bus Transceiver
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