i2c

[bear]

anyone know how to use i2c??
my project needs to send data more than 8-bits.. so i think i2c is better application..
but i have no idea about this communication..

[shahrul]

Send data between PIC to what device?
There are the way to use
1) UART transmit and UART receive
2) SPI master and SPI slave
3) I2C master and I2C slave

[robosang]

1st, not necessary to use I2C even when you need to send data more than 8-bit, as pointed out by shahrul, there are many serial communication protocol which is suitable, and serial communication is meant to send data more than 1 byte, we normally use it to send 1 byte because that is the minimum data it can send.

You can refer to Cytron DIY project. They have several examples using I2C, one of it is the Real Time Clock with DS1307.

[Brian Griffin]

anyone know how to use i2c??
my project needs to send data more than 8-bits.. so i think i2c is better application..
but i have no idea about this communication..

I2C only uses two wires, hence the alternate name "Two Wire Interface". The I2C/IIC is developed by Philips Inc.

SPI uses three wires. It is developed by Motorola.

In microcontrollers, all of these send/receive data by 8-bit chunks.