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參數(shù)資料
| 型號： | DS620U+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 11/15頁 |
| 文件大小： | 243K |
| 描述： | IC THERMOMETER/STAT DIG 8MSOP |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 功能： | 溫度計，恒溫計 |
| 傳感器類型： | 內(nèi)部 |
| 感應溫度： | -55°C ~ 125°C |
| 精確度： | ±2°C（最小值） |
| 拓撲： | ADC（三角積分型），寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 無 |
| 輸出風扇： | 無 |
| 電源電壓： | 1.7 V ~ 3.5 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）裸露焊盤 |
| 供應商設備封裝： | 8-uMax-EP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1435 (CN2011-ZH PDF) |
DS620 Digital Thermometer and Thermostat
11 of 15
is acting as a receiver, it uses a NACK instead of an ACK after the last data byte to indicate that it is finished
receiving data. The master indicates a NACK by leaving the SDA line high during the ACK clock cycle.
Slave Address: Every slave device on the bus has a unique 7-bit address that allows the master to access that
device. The DS620s 7-bit bus address is 1 0 0 1 A
2
A
1
A
0
, where A
2
, A
1
, and A
0
are user-selectable via the
corresponding input pins. The three address pins allow up to eight DS620s to be multidropped on the same bus.
Control Byte: The control byte is transmitted by the master and consists of the 7-bit slave address plus a
read/write (R/W) bit (see Figure 7). If the master is going to read data from the slave device then R/W = 1, and if
the master is going to write data to the slave device then R/W = 0.
Address Byte: The address byte is used by the master to tell the DS620 which address location in the memory
map in Table 4 is going to be accessed during communication or which command should be performed. See
Command Set section.
Figure 6. START, STOP, AND ACK SIGNALS
Figure 7. Control Byte
bit 7 bit 6
bit 5
bit 4
bit 3
bit 2
bit 1
bit 0
1
0
0
1
A
2
A
1
A
0
R/W?/SPAN>?/SPAN>
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.
INITIATING 2-WIRE COMMUNICATION
To initiate 2-wire communication, the master generates a START followed by a control byte containing the DS620
slave address. The R/W bit of the control byte must be a 0 (write) since the master next writes a command byte or
an address byte. The DS620 responds with an ACK after receiving the control byte. This must be followed by a
command byte from the master which indicates what type of command operation is to be performed, or an address
byte when the master intends to write to or read from the DS620. The DS620 again responds with an ACK after
receiving the command or address byte. The master can then issue a STOP to signal the end of the
communication sequence, or continue writing to the address memory. See the Command Set section for details on
SCL
SDA
START
Condition
STOP
Condition
ACK (or NACK)
From Receiver
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS620U/T&R | 制造商:Maxim Integrated Products 功能描述:LOW VOLT THERM USOP T&R - Tape and Reel |
| DS620U/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 |
| DS620U/TR | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Low-Voltage, +-0.5°C Accuracy Digital Thermometer and Thermostat |
| DS620U+ | 功能描述:板上安裝溫度傳感器 Low-Voltage .5+/-C 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 |
| DS620U+T&R | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL 2-WIRE 8USOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC THERMOMETER/STAT DIG 8MSOP |
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