Author Topic: Continuation Bit SSD1305  (Read 2143 times)

NHD2.23_I2C

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Continuation Bit SSD1305
« on: April 05, 2015, 10:14:17 PM »
What is the continuation bit used for?
From the SSD1305 manual it seems like only 2 control bytes can be used.
1. for commands 0x80h
2. for data going to GDDRAM 0x40h

I2C - bus write protocol is shown on page 22.
How can you read back the value of a register to make sure you have set is properly?
I did not see a read from Device Protocol at all in the manual so that a specific register can be read from.

Paul_B

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Re: Continuation Bit SSD1305
« Reply #1 on: April 28, 2015, 08:33:27 AM »
Hello,

The CO (Continuation) signal is just telling the display that there is going to be continuous I2C transmission. Rather than sending a start condition before each byte.
 
You can think of CO as a short cut,  e.g. instead of sending a start condition every time you wish to send continuous data you just set CO.  8)