PIC as I2C Slave

[Mainul]

mackrackit

Thanks a lot for such a prompt reply, I shall give it a try. I was certain to have something useful from here, that's why I love this forum so much.

The 18F chips are still difficult for me to handle, but I shall play with 16F877A and 16F88 chips. Well, how many slaves can be handled at a time on a single I2C bus? 10, 100 or more?

Mainul

[mackrackit]

Do not be afraid of the 18s, once you get past the setup they are not that much different than a 16. If you need help getting an 18F configured someone here will be able to help.

As for how many I2C's on I bus I am not sure, I should know... (see avatar)

[Mainul]

I was studying the datasheet of 16F88. The ‘SSP I2C Mode Operation’ section (10.3, page 94) says that SSP module can be configured for 7 bit or 10 bit addressing. So I guess in 7 bit addressing mode 128 unique addresses can be generated, similarly 1024 addresses in 10 bit mode. Is it really possible to connect 128 (or even 1024) 16F88 slaves in a single I2C bus? Seems to be very interesting!

I have a plan to jump into 18F series soon, shall come back with lot more problems.