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| 型号： | TPL0102-100PWR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 数字电位计 |
| 英文描述： | DIGITAL POTENTIOMETER, PDSO14 |
| 封装： | PLASTIC, TSSOP-14 |
| 文件页数： | 7/24页 |
| 文件大小： | 586K |
| 代理商： | TPL0102-100PWR |
SLIS134A
– MARCH 2011 – REVISED MARCH 2011
Standard I
2C Interface Details
The bidirectional I2C bus consists of the serial clock (SCL) and serial data (SDA) lines. Both lines must be
connected to a positive supply via a pullup resistor when connected to the output stages of a device. Data
transfer may be initiated only when the bus is not busy.
I2C communication with this device is initiated by the master sending a start condition, a high-to-low transition on
the SDA input/output while the SCL input is high (see Figure 5). After the start condition, the device address byte
is sent, MSB first, including the data direction bit (R/W). This device does not respond to the general call
address. After receiving the valid address byte, this device responds with an ACK, a low on the SDA input/output
during the high of the ACK-related clock pulse
Figure 5. Definition of Start and Stop Conditions
The data byte follows the address ACK. The R/W bit is kept low for transfer from the master to the slave. The
data byte is followed by an ACK sent from this device. Data are output only if complete bytes are received and
acknowledged. The output data is valid at time (tpv) after the low-to-high transition of SCL, during the clock cycle
for the ACK. On the I2C bus, only one data bit is transferred during each clock pulse. The data on the SDA line
must remain stable during the high pulse of the clock period, as changes in the data line at this time are
interpreted as control commands (start or stop) (see Figure 6).
Figure 6. Bit Transfer
A stop condition, a low-to-high transition on the SDA input/output while the SCL input is high, is sent by the
master (see Figure 5).
The number of data bytes transferred between the start and the stop conditions from transmitter to receiver is not
limited. Each byte of eight bits is followed by one ACK bit. The transmitter must release the SDA line before the
receiver can send an ACK bit.
A slave receiver that is addressed must generate an ACK after the reception of each byte. The device that
acknowledges has to pull down the SDA line during the ACK clock pulse so that the SDA line is stable low during
the high pulse of the ACK-related clock period (see Figure 7). Setup and hold times must be taken into account.
Copyright
2011, Texas Instruments Incorporated
15
Product Folder Link(s): TPL0102
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| TPL0102-100RUCR | 功能描述:数字电位计 IC 256 Taps Dual Ch Digital Pot 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 |
| TPL0102EVM | 功能描述:数据转换 IC 开发工具 TPL0102 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
| TPL0202-10 | 制造商:TI 制造商全称:Texas Instruments 功能描述:256-TAPS DUAL CHANNEL DIGITAL POTENTIOMETER WITH SPI INTERFACE AND NONVOLATILE MEMORY |
| TPL0202-10MRTER | 功能描述:数字电位计 IC 256 Taps,Dual Ch Dig Potentiometer 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 |
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