參數(shù)資料
型號(hào)： DS1923-F5
英文描述： Hygrochron Temperature/Humidity Logger iButton with 8kB Data Log Memory
中文描述： Hygrochron溫度/濕度記錄儀與8KB數(shù)據(jù)記錄存儲(chǔ)器iButton的
文件頁(yè)數(shù)： 13/52頁(yè)
文件大?。?/td> 495K
代理商： DS1923-F5
DS1923: Hygrochron Temperature/Humidity Logger iButton with 8kB Data Log Memory
Figure 4. 64-BIT LASERED ROM
13 of 52
MSB
LSB
8-Bit
CRC Code
48-Bit Serial Number
8-Bit Family
Code (41h)
MSB
LSB
MSB
LSB
MSB
LSB
MEMORY
The memory map of the DS1923 is shown in Figure 5. The 512 bytes general-purpose SRAM are located in pages
0 through 15. The various registers to set up and control the device fill page 16 and 17, called Register Pages 1
and 2 (details in Figure 6). Pages 18 and 19 provide storage space for calibration data. The "data log" logging
memory starts at address 1000h (page 128) and extends over 256 pages. The memory pages 20 to 127 are
reserved for future extensions. The scratchpad is an additional page that acts as a buffer when writing to the
SRAM memory or the register page. The data memory can be written at any time. The calibration memory holds
data from the device calibration that can be used to further improve the accuracy of temperature and humidity
readings. See the
Software Correction Algorithm
sections for details. The last byte of the calibration memory page
stores an 8-bit CRC of the preceding 31 bytes. Page 19 is an exact copy of the data in page 18. While the user can
overwrite the calibration memory, this is not recommended. See the
Security by Password
section for ways to
protect the memory. The access type for the register pages is register-specific and depends on whether the device
is programmed for a mission. Figure 6 shows the details. The data log memory is read-only for the user. It is written
solely under supervision of the on-chip control logic. Due to the special behavior of the write access logic (write
scratchpad, copy scratchpad) it is recommended to only write full pages at a time. This also applies to the register
pages and the calibration memory. See the
Address Register and Transfer Status
section for details.
Figure 5. DS1923 MEMORY MAP
32-Byte Intermediate Storage Scratchpad
ADDRESS
0000H to
001FH
32-Byte General-Purpose SRAM (R/W)
Page 0
0020H to
01FFH
General-Purpose SRAM (R/W)
Pages 1
to 15
0200H to
021FH
32-Byte Register Page 1
Page 16
0220H to
023FH
32-Byte Register Page 2
Page 17
0240H to
025FH
Calibration Memory Page 1 (R/W)
Page 18
0260H to
027FH
Calibration Memory Page 2 (R/W)
Page 19
0280H to
0FFFH
(Reserved For Future Extensions)
Pages 20 to 127
1000H to
2FFFH
Data Log Memory (Read-Only)
Pages 128
to 383
相關(guān)PDF資料
PDF描述
DS1990 Serial Number iButton
DS1990A Serial Number iButton
DS1990A-F5 Serial Number iButton
DS1994L-F5 4kb Plus Time Memory iButton
DS1994 4kb Plus Time Memory iButton
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1923-F5# 功能描述:iButton Hygrochron Temp/Hum Logger w/8KB DataLog 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
DS1923-F5#W 功能描述:iButton Hygrochron Temp/Hum Logger w/8KB DataLog 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
DS1923-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
DS19310 制造商:SANYO 制造商全稱: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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