- 您现在的位置：买卖IC网 > PDF目录295504 > DS1845X-010 (DALLAS SEMICONDUCTOR) 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, UUC14 PDF资料下载
参数资料
| 型号： | DS1845X-010 |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | 数字电位计 |
| 英文描述： | 10K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, UUC14 |
| 封装： | FCP-14 |
| 文件页数： | 9/13页 |
| 文件大小： | 98K |
| 代理商： | DS1845X-010 |
DS1845
5 of 13
RANDOM READ
A random read requires a dummy byte write sequence to load in the data word address. Once the device
and data address bytes are clocked in by the master, and acknowledged by the DS1845, the master must
generate another start condition. The master now initiates a current address read by sending the device
address with the read/write bit set high. The DS1845 will acknowledge the device address and serially
clocks out the data byte.
SEQUENTIAL ADDRESS READ
Sequential reads are initiated by either a current address read or a random address read. After the master
receives the first data byte, the master responds with an acknowledge. As long as the DS1845 receives
this acknowledge after a byte is read, the master may clock out additional data words from the DS1845.
After reaching address FFh, it resets to address 00h.
The sequential read operation is terminated when the master initiates a stop condition. The master does
not respond with a zero.
For a more detailed description of 2-wire theory of operation, refer to the following section.
2-WIRE SERIAL PORT OPERATION
The 2-wire serial port interface supports a bi-directional data transmission protocol with device
addressing. A device that sends data on 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 that generates the serial clock
(SCL), controls the bus access, and generates the START and STOP conditions. The DS1845 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.
The following I/O terminals control the 2-wire serial port: SDA, SCL, A0, A1, A2. Timing diagrams for
the 2-wire serial port can be found in Figures 2 and 3. Timing information for the 2-wire serial port is
provided in the AC Electrical Characteristics table for 2-wire serial communications.
The following bus protocol has been defined:
-
Data transfer may be initiated only when the bus is not busy.
-
During data transfer, the data line must remain stable whenever the clock line is HIGH. Changes in
the data line while the clock line is HIGH will be interpreted as control signals.
Accordingly, the following bus conditions have been defined:
Bus not busy: Both data and clock lines remain HIGH.
Start data transfer: A change in the state of the data line from HIGH to LOW while the clock is HIGH
defines a START condition.
Stop data transfer: A change in the state of the data line from LOW to HIGH while the clock line is
HIGH defines the STOP condition.
相关PDF资料 |
PDF描述 |
|---|---|
| DS1845X-100 | 100K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, UUC14 |
| DS1866N | DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 64 POSITIONS, PDIP8 |
| DS1867-100-IND | 100K DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 256 POSITIONS, PDIP14 |
| DS2009D-65 | 512 X 9 OTHER FIFO, 65 ns, PDIP28 |
| DS500008-12 | 8-BIT, 12 MHz, MICROCONTROLLER, PDIP40 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1845X-010/T&R | 制造商:Maxim Integrated Products 功能描述:DUAL NV POT AND MEM BUMP T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT/MEM DUAL NV 10K 14-FCP |
| DS1845X-010/T&R | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS1845X-050 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Dual NV Potentiometer and Memory |
| DS1845X-050/T&R | 制造商:Maxim Integrated Products 功能描述:DUAL NV POT & MEM BUMP 10K/50K T&R - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC POT/MEM DUAL NV 50K 14-FCP |
| DS1845X-050/T&R | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。