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參數(shù)資料
| 型號： | DS2422S |
| 英文描述： | 1-Wire Temperature/Datalogger with 8kB Datalog Memory |
| 中文描述： | 1 - Wire溫度/數(shù)據(jù)記錄器與8kB的數(shù)據(jù)記錄存儲器 |
| 文件頁數(shù)： | 18/48頁 |
| 文件大?。?/td> | 444K |
| 代理商： | DS2422S |
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DS2422
18 of 48
ALARM STATUS
The fastest way to determine whether a programmed alarm threshold was exceeded
during a mission is through
reading the Alarm Status Register. In a networked environment that contains multiple DS2422-based dataloggers
the devices that encountered an alarm can quickly be identified by means of the Conditional Search command (see
ROM Function Commands
). The data and temperature alarm only occurs if enabled (see
Temperature Sensor
Alarm
and
Serial Input Alarm
). The BOR alarm is always enabled.
Alarm Status Register Bitmap
ADDR
0214h
b7
BOR
b6
1
b5
1
b4
1
b3
DHF
b2
DLF
b1
THF
b0
TLF
There is only read access to this register. Bits 4 to 6 have no function. They always read 1. All five alarm status bits
are cleared simultaneously when the Clear Memory function is invoked. See
Memory and Control Functions
for
details.
Register Details
BIT DESCRIPTION
BIT(S)
DEFINITION
TLF: Temperature Low
Alarm Flag
b0
If this bit reads 1, there was at least one temperature conversion during
a mission revealing a temperature equal to or lower than the value in
the Temperature Low Alarm Register. A forced conversion can affect
the TLF bit. This bit can also be set with the initial alarm in the SUTA =
1 mode.
If this bit reads 1, there was at least one temperature conversion during
a mission revealing a temperature equal to or higher than the value in
the Temperature High Alarm Register. A forced conversion can affect
the THF bit. This bit can also be set with the initial alarm in the SUTA =
1 mode.
If this bit reads 1, there was at least one data value read from the serial
data interface during a mission revealing a value equal to or lower than
the value in the Data Low Alarm Register. A forced conversion can
affect the DLF bit.
If this bit reads 1, there was at least one data value read from the serial
data interface during a mission revealing a value equal to or higher
than the value in the Data High Alarm Register. A forced conversion
can affect the DHF bit.
If this bit reads 1, the device has performed a power-on-reset. This
occurs when the VBAT power source gets first connected at assembly
or when the power supply gets interrupted. The trim settings need to
be restored for proper function. Any data found in the datalog memory
should be disregarded.
THF: Temperature High
Alarm Flag
b1
DLF: Data Low Alarm Flag
b2
DHF: Data High Alarm
Flag
b3
BOR: Battery On Reset
Alarm
b7
GENERAL STATUS
The information in the general status register tells the host computer whether a mission-related command was
executed successfully. Individual status bits indicate whether the DS2422 is performing a mission, waiting for a
temperature alarm to trigger the logging of data or whether the data from the latest mission has been cleared.
General Status Register Bitmap
ADDR
0215h
b7
1
b6
1
b5
0
b4
b3
b2
0
b1
MIP
b0
0
WFTA
MEMCLR
There is only read access to this register. Bits 0, 2, 5, 6, and 7 have no function.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2482-800 | Eight-Channel 1-Wire Master |
| DS2482-100 | Single-Channel 1-Wire Master |
| DS2482S-100 | Single-Channel 1-Wire Master |
| DS2482S-800 | Eight-Channel 1-Wire Master |
| DS2502-E48 | 48-Bit Node Address Chip |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2422S+ | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS2422X | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| DS2423 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:4kbit 1-Wire RAM with Counter |
| DS2423D/T&R | 制造商:Maxim Integrated Products 功能描述:IC SRAM 4KBIT 6FLIPCHIP |
| DS2423D/T&R | 功能描述:IC SRAM 4KBIT 6FCHIP RoHS:否 類別:集成電路 (IC) >> 存儲器 系列:- 標準包裝:150 系列:- 格式 - 存儲器:EEPROMs - 串行 存儲器類型:EEPROM 存儲容量:4K (2 x 256 x 8) 速度:400kHz 接口:I²C，2 線串口 電源電壓:2.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 封裝/外殼:8-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-DFN（2x3） 包裝:管件 產(chǎn)品目錄頁面:1445 (CN2011-ZH PDF) |
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