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參數(shù)資料
| 型號： | DS1921 |
| 英文描述： | High-Resolution Thermochron iButton |
| 中文描述： | 高分辨率Thermochron iButton的 |
| 文件頁數(shù)： | 5/44頁 |
| 文件大?。?/td> | 271K |
| 代理商： | DS1921 |
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DS1921H/Z
5 of 44
1-Wire CRC GENERATOR
Figure 4
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Polynomial = X
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+ X
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+ X
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+ 1
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st
STAGE
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nd
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rd
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th
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INPUT DATA
MEMORY
The memory map of the DS1921H/Z is shown in Figure 5. The 4096-bit general-purpose SRAM make up
pages 0 through 15. The timekeeping, control, and counter registers fill page 16, called Register Page (see
Figure 6). Pages 17 to 19 are assigned to storing the alarm time stamps and durations. The temperature
histogram bins begin at page 64 and use up to four pages. The temperature logging memory covers pages
128 to 191. Memory pages 20 to 63, 68 to 127, and 192 to 255 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 memory pages 17 and higher are read-only for the user. They are written to or erased solely
under supervision of the on-chip control logic.
DS1921H/Z MEMORY MAP
Figure 5
32-Byte Intermediate Storage Scratchpad
ADDRESS
0000h to
01FFh
0200h to
021Fh
General-Purpose SRAM (16 Pages)
Pages 0 to 15
32-Byte Register Page
Page 16
0220h to
027Fh
0280h to
07FFh
Alarm Time Stamps and Durations
Pages 17 to 19
(Reserved for Future Extensions)
Pages 20 to 63
0800h to
087Fh
0880h to
0FFFh
Temperature Histogram Memory
Pages 64 to 67
(Reserved for Future Extensions)
Pages 68 to 127
1000h to
17FFh
1800h to
1FFFh
Datalog Memory (64 Pages)
Pages 128 to 191
(Reserved for Future Extensions)
Pages 192 to 255
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1921H-F5 | High-Resolution Thermochron iButton |
| DS1921Z-F5 | High-Resolution Thermochron iButton |
| DS1963L-F5 | NVRAM (Battery Based) |
| DS1963S | SHA iButton |
| DS1971 | 256-Bit EEPROM iButton |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1921G | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Thermochron iButton |
| DS1921G_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Logs Up to 2048 Consecutive Temperature Thermochron iButton |
| DS1921G_1109 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Thermochron iButton |
| DS1921G_12 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Thermochron iButton |
| DS1921G-F5 | 功能描述:iButton RoHS:否 存儲類型:SRAM 存儲容量: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 |
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