參數(shù)資料
型號(hào)： DS1922T
英文描述： Temperature Logger iButton with 8kB Datalog Memory
文件頁(yè)數(shù)： 21/48頁(yè)
文件大?。?/td> 428K
代理商： DS1922T
DS1922L/DS1922T
21 of 48
MISSION TIME STAMP
The Mission Time Stamp indicates the date and time of the first temperature sample of the mission. There is only
read access to the Mission Time Stamp Register.
Mission Time Stamp Registers Bitmap
ADDR
0219h
021Ah
021Bh
b7
0
0
0
b6
b5
10s
10min.
20hr
AM/PM
b4
b3
b2
b1
b0
Single Seconds
Single Minutes
Single Hours
12/24
10hr
021Ch
021Dh
021Eh
0
0
0
10 Date
Single Date
Single Months
Single Years
CENT
0
10m.
10yrs
MISSION PROGRESS INDICATOR
Depending on settings in the Mission Control Register (address 0213h) the DS1922L/T will log temperature in 8-bit
or 16-bit format. The Mission Samples Counter together with the starting address and the logging format (8 or 16
bits) provides the information to identify valid blocks of data that have been gathered during the current (MIP = 1)
or latest mission (MIP = 0). See
Datalog Memory Usage
for an illustration.
Mission Samples Counter Register Map
ADDR
0220h
0221h
0222h
b7
b6
b5
b4
b3
b2
b1
b0
Low Byte
Center Byte
High Byte
There is only read access to this register.
The number read from the Mission Samples Counter indicates how often the DS1922L/T woke up during a mission
to measure temperature. The number format is 24-bit unsigned integer. The Mission Samples Counter is reset
through the Clear Memory command.
OTHER INDICATORS
The Device Samples Counter is similar to the Mission Samples Counter. During a mission this counter increments
whenever the DS1922L/T wakes up to measure and log data and when the device is testing for a temperature
alarm in SUTA mode. Between missions the counter increments whenever the Forced Conversion command is
executed. This way the Device Samples Counter functions like a gas gauge for the battery that powers the iButton.
Device Samples Counter Register Map
ADDR
0223h
0224h
0225h
b7
b6
b5
b4
b3
b2
b1
b0
Low Byte
Center Byte
High Byte
There is only read access to this register.
The Device Samples Counter is reset to zero when the iButton is assembled. The counter will increment a couple
of times during final test. The number format is 24-bit unsigned integer. The maximum number that can be
represented in this format is 16777215.
The Device Configuration Byte is used to allow the master to distinguish between the DS2422 chip, and different
versions of the DS1922 iButtons. The table below shows the codes assigned to the various devices.
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DS1922L-F5 Temperature Logger iButton With 8kB Datalog Memory
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1922T-A1F 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1922T-A1F+ 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1922T-F5 功能描述:iButton RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1922T-F5# 功能描述:iButton Temp Logger Ibutton w/8Kb Datalog Mem RoHS:否 存儲(chǔ)類型:SRAM 存儲(chǔ)容量:512 B 組織: 工作電源電壓:3 V to 5.25 V 接口類型:1-Wire 最大工作溫度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封裝 / 箱體:F5 MicroCan 制造商:Maxim Integrated
DS1922T-F50 制造商:Maxim Integrated Products 功能描述:THERMOCHRON,IBTN,F5,HI-TEMP,8K - Rail/Tube
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