24LLC16

16K-Bit-Serial EEPROM

* All specs and applications shown above subject to change without prior notice.

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Page

10 of 22

Rev 1.0 Aug.5, 2002

POLLING FOR AN ACK SIGNAL

When the master issues a stop condition to initiate a write cycle, the 24LLC16 starts an internal write cycle.

The master can then immediately begin polling for an ACK from the slave device to determine whether the write

cycle is completed.

To poll for an ACK signal in a write operation, the master issues a start condition followed by the slave address.

As long as the 24LLC16 remains busy with the write operation, no ACK is returned. When the 24LLC16

completes the write operation, it returns an ACK and the master can then proceed with the next read or write

operation (see Figure 5-11).

Send Write

Command

Send Stop Condition to

Initiate Write Cycle

Send Start

Condition

Send Slave Address

Start Next

Operation

ACK = "0" ?

Yes

No

Figure 5-11. Master Polling for an ACK Signal from a Slave Device