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TPL0401A 数据表(PDF) 9 Page - Texas Instruments

部件名 TPL0401A
功能描述  128 TAPS Single Channel Digital Potentiometer with I2C Interface
Download  21 Pages
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TPL0401A 数据表(HTML) 9 Page - Texas Instruments

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Start
Address (01_1110)
0
Ack
Command (00000000)
Ack
Start
Address (01_1110)
0
Ack
Command (00000000)
Ack
reStart
Address (01_1110)
1
Ack
Data Byte
I2C Write to A Register
I2C Read From A Register
Data
Stop
noAck
Stop
Ack
From Processor to DPOT
From
to
DPOT
Processor
SDA
SCL
Start Condition
Stop Condition
S
P
TPL0401A
TPL0401B
TPL0401C
www.ti.com
SLIS144A – SEPTEMBER 2011 – REVISED MARCH 2012
SLAVE ADDRESS
TPL0401A, TPL0401C
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(MSB)
(LSB)
0
1
0
1
1
1
0
R/W
TPL0401B
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
(MSB)
(LSB)
0
1
1
1
1
1
0
R/W
WRITE AND READ PROTOCOL
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 13). 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 12. Definition of Start and Stop Conditions
Copyright © 2011–2012, Texas Instruments Incorporated
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Product Folder Link(s): TPL0401A TPL0401B TPL0401C


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