serial communication I2C protocal

i am working for one application there i need to use I2C protocal serial communication... i have to write in more than 20 address with one byte data.....do i can use master- writer example code there i will specify address and data individually is it ok or any extra things i have to consider...apart from powering and specification issues....

do i can use master- writer example code there i will specify address and data individually is it ok

If you do it right, yes.

Pavan_arduino:
i am working for one application there i need to use I2C protocal serial communication... i have to write in more than 20 address with one byte data.....do i can use master- writer example code there i will specify address and data individually is it ok or any extra things i have to consider...apart from powering and specification issues....

I would like to paraphrase your above quoted post as follows:

I am working on an application where I intend to use I2C protocol for serial communication. I have to write codes for about twenty (20) I2C devices where each addressed device will receive 1-byte data from the Master. Can I do it by writing codes at the Master side? In the Master Codes, I will specify the addresses of the target I2C devices and the associated data byte. Are they OK? Do I need to consider other electrical specifications such as the values of pull-up resistors of the I2C Bus and the logic values for the IO pins of the Arduino?

Questions:
1. Do you want to use Arduino UNO?

2. How many I2C slave devices are there? What are the functions and type numbers of these devices?

3. Can you post a simple diagram showing I2C bus connection between UNO and only one slave device?