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参数资料
| 型号： | DS1923-F5# |
| 厂商： | Maxim Integrated |
| 文件页数： | 50/55页 |
| 文件大小： | 0K |
| 描述： | IBUTTON TEMP/HUMIDITY LOGGER F5 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| RoHS指令信息： | IButton RoHS Compliance Plan |
| 标准包装： | 5 |
| 系列： | iButton® |
| 存储容量： | 512B |
| 存储器类型： | NVSRAM（非易失 SRAM） |
| 产品目录页面： | 1431 (CN2011-ZH PDF) |
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DS1923
iButton Hygrochron Temperature/Humidity
Logger with 8KB Data-Log Memory
Software Correction Algorithm
for Temperature
The accuracy of high-resolution temperature conver-
sion results (forced conversion as well as temperature
logs) can be improved through a correction algorithm.
The data needed for this software correction is stored in
the calibration memory (memory page 18). It consists of
reference temperature (Tr) and conversion result (Tc)
for two different temperatures, as shown below. See the
Temperature Conversion section for the binary number
format.
The software correction algorithm requires two addition-
al values, which are not stored in the device. For the
DS1923 these values are Tr1 = 60°C and Offset = 41.
The correction algorithm consists of two steps, prepara-
tion and execution. The preparation step first converts
temperature data from binary to decimal °C format.
Next, three coefficients A, B, and C are computed. In
the execution step, the temperature reading as deliv-
ered by the DS1923 is first converted from the low/high-
byte format (TcL, TcH) to °C (Tc) and then corrected to
Tcorr. Once step 1 is performed, the three coefficients
can be used repeatedly to correct any temperature
reading and temperature log of the same device.
ADDRESS
0240h
0241h
0242h
0243h
0244h
0245h
0246h
0247h
Step 1: Preparation
Tr1 = 60
Offset = 41
DESIGNATOR
Tr2H
Tr2L
Tc2H
Tc2L
Tr3H
Tr3L
Tc3H
Tc3L
DESCRIPTION
Cold reference temperature, high-byte.
Cold reference temperature, low-byte.
Conversion result at cold reference temperature, high-byte.
Conversion result at cold reference temperature, low-byte.
Hot reference temperature, high-byte.
Hot reference temperature, low-byte.
Conversion result at hot reference temperature, high-byte.
Conversion result at hot reference temperature, low-byte.
Tr2 = Tr2H/2 + Tr2L/512 - Offset
Tr3 = Tr3H/2 + Tr3L/512 - Offset
Tc2 = Tc2H/2 + Tc2L/512 - Offset
Tc3 = Tc3H/2 + Tc3L/512 - Offset
(convert from binary to °C)
(convert from binary to °C)
(convert from binary to °C)
(convert from binary to °C)
Err2 = Tc2 - Tr2
Err3 = Tc3 - Tr3
Err1 = Err2
B = (Tr2 2 - Tr1 2 ) x (Err3 - Err1)/[(Tr2 2 - Tr1 2 ) x (Tr3 - Tr1) + (Tr3 2 - Tr1 2 ) x (Tr1 - Tr2)]
A = B x (Tr1 - Tr2)/(Tr2 2 - Tr1 2 )
C = Err1 - A x Tr1 2 - B x Tr1
Step 2: Execution
Tc = TcH/2 + TcL/512 - Offset (convert from binary to °C)
Tcorr = Tc - (A x Tc 2 + B x Tc + C) (the actual correction)
50
Maxim Integrated
相关PDF资料 |
PDF描述 |
|---|---|
| DS1961S-F3# | IBUTTON EEPROM 1KBit F3 |
| DS1963S-F5+ | IBUTTON MONETARY SHA-1 |
| DS1971-F3+ | IBUTTON EEPROM 256KBIT F3 |
| DS1972-F3+ | IBUTTON EEPROM 1KBit F3 |
| DS1973-F3+ | IBUTTON EEPROM 4KBit F3 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1923-F5# | 功能描述:iButton Hygrochron Temp/Hum Logger w/8KB DataLog RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated |
| DS1923-F5#W | 功能描述:iButton Hygrochron Temp/Hum Logger w/8KB DataLog RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated |
| DS1923-F5+ | 功能描述:iButton RoHS:否 存储类型:SRAM 存储容量:512 B 组织: 工作电源电压:3 V to 5.25 V 接口类型:1-Wire 最大工作温度:+ 85 C 尺寸:17.35 mm x 5.89 mm 封装 / 箱体:F5 MicroCan 制造商:Maxim Integrated |
| DS19310 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:Color TV Owners Manual Manuel dinstructions du teleouleur Color TV Manual Del Propietario |
| DS193-K | 制造商:Miyama Electric 功能描述: |
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