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參數資料
| 型號： | DS1825U+T&R |
| 廠商： | Maxim Integrated |
| 文件頁數： | 7/21頁 |
| 文件大小： | 287K |
| 描述： | IC THERMOMETER DIGITAL 8-USOP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 3,000 |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±2°C（最小值） |
| 拓撲： | 寄存器庫，變簽式暫存器 |
| 輸出類型： | 數字 |
| 輸出警報： | 是 |
| 輸出風扇： | 無 |
| 電源電壓： | 3 V ~ 3.7 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應商設備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
DS1825 Programmable Resolution 1-Wire Digital Thermometer With 4-Bit ID
7 of 21
Figure 4. SUPPLYING THE PARASITE-POWERED DS1825 DURING
TEMPERATURE CONVERSIONS
Figure 5. POWERING THE DS1825 WITH AN EXTERNAL SUPPLY
64-BIT LASERED ROM CODE
Each DS1825 contains a unique 64-bit code (see Figure 6) stored in ROM. The least significant 8 bits of the ROM
code contain the DS1825s 1-Wire family code: 3Bh. The next 48 bits contain a unique serial number. The most
significant 8 bits contain a cyclic redundancy check (CRC) byte that is calculated from the first 56 bits of the ROM
code. A detailed explanation of the CRC bits is provided in the CRC GENERATION section. The 64-bit ROM code
and associated ROM function control logic allow the DS1825 to operate as a 1-Wire device using the protocol
detailed in the 1-Wire BUS SYSTEM section of this data sheet.
Figure 6. 64-BIT LASERED ROM CODE
8-BIT CRC
48-BIT SERIAL NUMBER
8-BIT FAMILY CODE (3Bh)
MEMORY
The DS1825s memory is organized as shown in Figure 7. The memory consists of an SRAM scratchpad with NV
EEPROM storage for the high and low alarm trigger registers (T
H
and T
L
) and configuration register. Note that if the
DS1825 alarm function is not used, the T
H
and T
L
registers can serve as general-purpose memory. All memory
commands are described in detail in the DS1825 FUNCTION COMMANDS section.
Byte 0 and byte 1 of the scratchpad contain the LSB and the MSB of the temperature register, respectively. These
bytes are read-only. Bytes 2 and 3 provide access to T
H
and T
L
registers. Byte 4 contains the configuration register
data, which is explained in detail in the CONFIGURATION REGISTER section of this data sheet. Bytes 5, 6, and 7
are reserved for internal use by the device and cannot be overwritten.
MSB
MSB
LSB
LSB
LSB
MSB
V
PU
V
PU
4.7K
1-Wire Bus
Micro-
processor
DS1825
GND
V
DD
DQ
To Other
1-Wire Devices
V
DD
(External Supply)
DS1825
GND
V
DD
DQ
V
PU
4.7K
To Other
1-Wire Devices
1-Wire Bus
Micro-
processor
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相關代理商/技術參數 |
參數描述 |
|---|---|
| DS1830 | 功能描述:監控電路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1830+ | 功能描述:監控電路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1830A | 功能描述:監控電路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1830A+ | 功能描述:監控電路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| DS1830AS | 功能描述:監控電路 Reset Sequencer RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
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