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參數(shù)資料
| 型號： | DS75U |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | Switch/Digital Output Temperature Sensor |
| 英文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, SQUARE, SURFACE MOUNT |
| 封裝： | MICRO MAX PACKAGE-8 |
| 文件頁數(shù)： | 4/15頁 |
| 文件大小： | 338K |
| 代理商： | DS75U |
DS75
12 of 14
0
P1
P0
GENERAL 2-WIRE INFORMATION
All data is transmitted MSb first over the 2-wire bus.
One bit of data is transmitted on the 2-wire bus each SCL period.
A pullup resistor is required on the SDA line and, when the bus is idle, both SDA and SCL must remain
in a logic-high state.
All bus communication must be initiated with a START condition and terminated with a STOP
condition. During a START or STOP is the only time SDA is allowed to change states while SCL is
high. At all other times, changes on the SDA line can only occur when SCL is low: SDA must remain
stable when SCL is high.
After every 8-bit (1-byte) transfer, the receiving device must answer with an ACK (or NACK), which
takes one SCL period. Therefore, nine clocks are required for every one-byte data transfer.
Writing to the DS75—To write to the DS75, the master must generate a START followed by an
address byte containing the DS75 bus address. The value of the R/W bit must be a 0, which indicates that
a write is about to take place. The DS75 will respond with an ACK after receiving the address byte. This
must be followed by a pointer byte from the master, which tells the DS75 which register is being written
to. The DS75 will again respond with an ACK after receiving the pointer byte. Following this ACK the
master device must immediately begin transmitting data to the DS75. When writing to the configuration
register, the master must send one byte of data (see Figure 9a), and when writing to the TOS or THYST
registers the master must send two bytes of data (see Figure 9b). After receiving each data byte, the DS75
will respond with an ACK, and the transaction is finished with a STOP from the master.
Reading from the DS75—When reading from the DS75, if the pointer was already pointed to the
desired register during a previous transaction, the read can be performed immediately without changing
the pointer setting. In this case the master sends a START followed by an address byte containing the
DS75 bus address. The R/W bit must be a 1, which tells the DS75 that a read is being performed. After
the DS75 sends an ACK in response to the address byte, the DS75 will begin transmitting the requested
data on the next clock cycle. When reading from the configuration register, the DS75 will transmit one
byte of data, after which the master must respond with a NACK followed by a STOP (see Figure 9c). For
two-byte reads (i.e., from the Temperature, TOS or THYST register), the DS75 will transmit two bytes of
data, and the master must respond to the first data byte with an ACK and to the second byte with a NACK
followed by a STOP (see Figure 9d). If only the most significant byte of data is needed, the master can
issue a NACK followed by a STOP after reading the first data byte in which case the transaction will be
the same as for a read from the configuration register.
If the pointer is not already pointing to the desired register, the pointer must first be updated as shown in
Figure 9e, which shows a pointer update followed by a single-byte read. The value of the R/W bit in the
initial address byte is a 0 (“write”) since the master is going to write a pointer byte to the DS75. After the
DS75 to the address byte with an ACK, the master sends a pointer byte that corresponds to the desired
register. The master must then perform a repeated start followed by a standard one or two byte read
sequence (with R/W =1) as described in the previous paragraph.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS75S | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, RECTANGULAR, SURFACE MOUNT |
| DS80C310-QCG | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQCC44 |
| DS80C310-MCG | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PDIP40 |
| DS80C310-ECG | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP44 |
| DS80C320-ENL | 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS75U/T&R | 制造商:Maxim Integrated Products 功能描述:2 WIRE THERMAL WATCHDOG MSOP T&R - Tape and Reel |
| DS75U/T&R | 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(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 |
| DS75U+ | 功能描述:板上安裝溫度傳感器 Digital RoHS:否 制造商:Omron Electronics 輸出類型: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 |
| DS75U+ | 制造商:Maxim Integrated Products 功能描述:IC TEMP SENSOR 12BIT ?2 AX-8 |
| DS75U+T&R | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 8PIN UMAX - Cut TR (SOS) 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 8PIN UMAX - Tape and Reel 制造商:Maxim Integrated Products 功能描述:Maxim Integrated DS75U+T&R Temperature Sensors 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG 8-MSOP |
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