參數(shù)資料
型號(hào)： DS2422
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，帶有8KB數(shù)據(jù)記錄存儲(chǔ)器
文件頁(yè)數(shù)： 15/48頁(yè)
文件大小： 444K
代理商： DS2422
DS2422
15 of 48
threshold registers that are associated to the serial data input.
The registers for data alarm thresholds are
located at address 020Ah (Low Alarm) and 020B (High Alarm).
The comparison is based on the most
significant serial input byte and assumes that the data is represented as unsigned binary number.
TEMPERATURE SENSOR ALARM
The DS2422 has two
Temperature Alarm Threshold registers (address 0208h, 0209h)
to store values, which
determine whether a critical temperature has been reached. A temperature alarm is generated if the device
measures an alarming temperature AND the alarm signaling is enabled. The bits ETLA and ETHA that enable the
temperature alarm are located in the Temperature Sensor Control Register. The temperature alarm flags TLF and
THF are found in the Alarm Status Register at address 0214h.
Temperature Sensor Control Register Bitmap
ADDR
0210h
b7
0
b6
0
b5
0
b4
0
b3
0
b2
0
b1
b0
ETHA
ETLA
During a mission, there is only read access to this register. Bits 2 to 7 have no function. They always read 0 and
cannot be written to 1.
Register Details
BIT DESCRIPTION
BIT(S)
DEFINITION
ETLA: Enable Tempera-
ture Low Alarm
b0
This bit controls whether, during a mission, the Temperature Low
Alarm Flag TLF may be set, if a temperature conversion results in a
value equal to or lower than the value in the Temperature Low Alarm
Threshold Register. If ETLA is 1, temperature low alarms are enabled.
If ETLA is 0, temperature low alarms are not generated.
This bit controls whether, during a mission, the Temperature High
Alarm Flag THF may be set, if a temperature conversion results in a
value equal to or higher than the value in the Temperature High Alarm
Threshold Register. If ETHA is 1, temperature high alarms are
enabled. If ETHA is 0, temperature high alarms are not generated.
ETHA: Enable
Temperature High Alarm
b1
SERIAL INPUT ALARM
The DS2422 has two
Data Alarm Threshold registers (address 020Ah, 020Bh)
to store values, which determine
whether data read through the serial interface can generate an alarm. Such an alarm is generated if the input data
qualifies for an alarm AND the alarm signaling is enabled. The bits EDLA and EDHA that enable the serial input
alarm are located in the DATA_IF Control Register. The corresponding alarm flags DLF and DHF are found in the
Alarm Status Register at address 0214h.
DATA_IF Control Register Bitmap
ADDR
0211h
b7
1
b6
1
b5
1
b4
1
b3
1
b2
1
b1
b0
EDHA
EDLA
During a mission, there is only read access to this register. Bits 3 to 7 have no function. They always read 1 and
cannot be written to 0.
相關(guān)PDF資料
PDF描述
DS2422S 1-Wire Temperature/Datalogger with 8kB Datalog Memory
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS2422P 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Serial SRAM
DS2422S 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)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(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor
DS2422S+ 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類(lèi)型:Digital 配置: 準(zhǔn)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(fēng)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(lèi)型:Digital 配置: 準(zhǔn)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(fēng)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
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