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參數(shù)資料
| 型號： | DS1775R/TR6 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 11/13頁 |
| 文件大?。?/td> | 201K |
| 代理商： | DS1775R/TR6 |
DS1775
7 of 13
THERMOMETER RESOLUTION CONFIGURATION Table 5
R1
R0
Thermometer Resolution
Max Conversion Time
0
9-bit
0.15s
0
1
10-bit
0.3s
1
0
11-bit
0.6s
1
12-bit
1.2s
THERMOSTAT SETPOINTS PROGRAMMING
The thermostat registers (TOS and THYST) can be programmed or read via the 2–wire interface. TOS is
accessed by setting the DS1775 data pointer to the 03h location, and to the 02h location for THYST.
The format of the TOS and THYST registers is identical to that of the Thermometer register; that is, 12–bit 2’s
complement representation of the temperature in
°C. The user can program the number of bits (9, 10, 11,
or 12) for each TOS and THYST that corresponds to the thermometer resolution mode chosen. For example, if
the 9–bit mode is chosen the 3 least significant bits of TOS and THYST will be ignored by the thermostat
comparator. The format for both TOS and THYST is shown in Table 6. The power–up default for TOS is 80
°C
and for THYST is 75
°C.
THERMOSTAT SETPOINT (TOS/THYST) FORMAT Table 6
S2
6
2
5
2
4
2
3
2
1
2
0
MSB
MSb
(UNIT =
°C)
LSb
2
-1
2
-2
2
-3
2
-4
0
000
LSB
TEMPERATURE/DATA RELATIONSHIPS
TEMP
DIGITAL OUTPUT (Binary)
DIGITAL OUTPUT (Hex)
+80
°C
0101 0000 0000 0000
5000h
+75
°C
0100 1011 0000 0000
4B00h
+10.125
°C
0000 1010 0010 0000
0A20h
+0.5
°C
0000 0000 1000 0000
0080h
+0
°C
0000 0000 0000 0000
0000h
-0.5
°C
1111 1111 1000 0000
FF80h
-10.125
°C
1111 0101 1110 0000
F5E0h
-25.0625
°C
1110 0110 1111 0000
E6F0h
-55
°C
1100 1001 0000 0000
C900h
If the user does not wish to take advantage of the thermostat capabilities of the DS1775, the 24 bits can be
used for general storage of system data that need not be maintained following a power loss.
2–WIRE SERIAL DATA BUS
The DS1775 supports a bi–directional 2-wire bus and data transmission protocol. A device that sends data
onto the bus is defined as a transmitter, and a device receiving data as a receiver. The device that controls
the message is called a “master”. The devices that are controlled by the master are “slaves”. The bus must
be controlled by a master device, which generates the serial clock (SCL), controls the bus access, and
generates the START and STOP conditions. The DS1775 operates as a slave on the two–wire bus.
Connections to the bus are made via the open–drain I/O lines SDA and SCL.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS1775R-U | 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| DS1776 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PI-Bus Transceiver |
| DS1776E/883 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PI-Bus Transceiver |
| DS1776J/883 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| DS1776W/883 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single 8-bit Bus Transceiver |
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