STA326 datasheet(20/64 Pages) STMICROELECTRONICS

20 / 64 page

I2C bus specification

STA326

20/64

DocID11531 Rev 9

6.3

Write operation

Following the START condition the master sends a device select code with the RW bit set

to 0. The STA326 acknowledges this and then the master writes the internal address byte.

After receiving the internal byte address the STA326 again responds with an

acknowledgement.

Figure 14. I2C write procedure

Byte write

In the byte write mode the master sends one data byte. This is acknowledged by the

STA326. The master then terminates the transfer by generating a STOP condition.

Multi-byte write

The multi-byte write modes can start from any internal address. Sequential data byte writes

will be written to sequential addresses within the STA326.

The master generating a STOP condition terminates the transfer.

6.4

Read operation

Figure 15. I2C read procedure

Current address byte read

Following the START condition the master sends a device select code with the RW bit set to

1. The STA326 acknowledges this and then responds by sending one byte of data. The

master then terminates the transfer by generating a STOP condition.

Obsolete

Product(s)

- Obsolete

Product(s)

STA326 Datasheet(PDF) 20 Page - STMicroelectronics