I2C post write/read 10ms pause mandatory?

[xnihilo]

Hi,

In PPB manual, it is sait we have to add a
PAUSE 10
after a I2CREAD or I2CWRITE
In the 24LC08B datasheet, I read that something like 2ms are enough to write a page (16 bits) at once. Should I really add a 10ms pause after a write or a read or is it for safety for some specific conditions???

Thank you

[skimask]

In PPB manual, it is sait we have to add a
PAUSE 10
after a I2CREAD or I2CWRITE
In the 24LC08B datasheet, I read that something like 2ms are enough to write a page (16 bits) at once. Should I really add a 10ms pause after a write or a read or is it for safety for some specific conditions???

Pause after a read? Why would you want to do that? Are you waiting for the heating pads to burn some skin or something?

Pause after a write? Well, most likely since eeprom writes are internally timed and controlled by the eeprom itself. If you further read the eeprom datasheet, you'll probably find something about a BUSY bit. And you probably further find something about polling said bit to see if the internal write has been accomplished or not.

PAUSE 10 - ....and a few paragraphs before that, the PBP manual reminds you to check the datasheet for the specific device you are using to find the timing details.

[xnihilo]

Datasheet p3:
Write cycle time: 5ms
Is that the 'dead' time before another write can take place?
I have not included code for checking the flag telling the WRITE is finished but if I take in account the stated 5ms, I should be safe, shouldn't I?

So I do not need to wait after a read? Okay, I gues it is beacause no data is modified but why should it take more time to write than to read?

[mister_e]

5mSec is the max recommend, so you can't go wrong with that.

No need to wait after I2CREAD.

[xnihilo]

I always enjoy your answers, thank you very much.

[mister_e]

Bienvenue!