SDA vs SCL: Understanding Data and Clock Line Functions in I2C Communication

keyboard9 · 2011-02-13T20:15:09+01:00

I would like to know about these SCL and SDA control lines. Which line is responsible for receiving data and which for sending data?

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#1 9147397 13 Feb 2011 20:15

keyboard9 keyboard9

Level 12

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Post #1
9147397 13 Feb 2011 20:15

I would like to know about these SCL and SDA control lines.
Which line is responsible for receiving data and which for sending data?
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#2 9149872 14 Feb 2011 12:38

Logi Logi

Level 19

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Post #2
9149872 14 Feb 2011 12:38

Hello

The i2c bus consists of a data line (denoted as SDA, serial data) and a transmission clock line (denoted as SCL, serial clock)
Read more about the i2c protocol.
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#3 9149874 14 Feb 2011 12:39

amigo76 amigo76

Level 15

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Post #3
9149874 14 Feb 2011 12:39

SCL is the clock line - there is the clock signal on it, and SDA is the data line - data bits are sent serially over it. Enter "I2C bus" in the search engine and read what interests you. Generally, it is a serial bus, so on one bus, i.e. SDA, data is sent to and from all devices connected to this bus.
#4 9150705 14 Feb 2011 16:26

Mirek Z. Mirek Z.

VIP Meritorious for electroda.pl

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Post #4
9150705 14 Feb 2011 16:26

To view the material on this forum you must be logged in. - p.11, p.14, p.16.
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