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参数资料
| 型号： | DS1923-F5# |
| 厂商： | Maxim Integrated |
| 文件页数： | 51/55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
Numerical Temperature Correction Example
CONVERTED DATA FROM CALIBRATION MEMORY
Tr2 = -10.1297°C
Tr3 = 24.6483°C
Tc2 = -10.0625°C
Tc3 = 24.5°C
RESULTING CORRECTION COEFFICIENTS
B = -0.008741
A = 0.000175/°C
C = -0.039332°C
ERROR VALUES
Err2 = 0.0672°C
Err3 = -0.1483°C
Err1 = Err2
APPLICATION OF CORRECTION COEFFICIENTS
TO SAMPLE READING
Tc = 22.500000°C
Tcorr = 22.647275°C
Note: The software correction requires floating point arithmetic (24-bit or better). Suitable math libraries for microcontrollers are
found on various websites and are included in cross-compilers.
Software Correction Algorithm
for Humidity
The accuracy of humidity conversion results (forced
conversion as well as logged data) 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
humidity (Hr) and conversion result (Hc) for three differ-
ent humidity levels, as shown below. The data is taken
at 25°C.
The correction algorithm consists of two steps: prepara-
tion and execution. The preparation step first converts
humidity data from binary to decimal %RH format. Next,
three coefficients A, B, and C are computed. In the exe-
cution step the humidity reading as delivered by the
DS1923 (raw data) is first converted from the low/high-
byte format (HcL, HcH) to %RH (Hc) and then correct-
ed to Hcorr. Once step 1 is performed, the three
coefficients can be used repeatedly to correct any
humidity reading and humidity log of the same device.
ADDRESS
0248h
0249h
024Ah
024Bh
024Ch
024Dh
024Eh
024Fh
0250h
0251h
0252h
0253h
Maxim Integrated
DESIGNATOR
Hr1H
Hr1L
Hc1H
Hc1L
Hr2H
Hr2L
Hc2H
Hc2L
Hr3H
Hr3L
Hc3H
Hc3L
DESCRIPTION
Low reference humidity, high byte.
Low reference humidity, low byte.
Conversion result at low reference humidity, high byte.
Conversion result at low reference humidity, low byte.
Medium reference humidity, high byte.
Medium reference humidity, low byte.
Conversion result at medium reference humidity, high byte.
Conversion result at medium reference humidity, low byte.
High reference humidity, high byte.
High reference humidity, low byte.
Conversion result at high reference humidity, high byte.
Conversion result at high reference humidity, low byte.
51
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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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