24LLC16
16K-Bit-Serial EEPROM
RANDOM ADDRESS BYTE READ OPERATION
Using random read operations, the master can access any memory location at any time. Before it issues the
slave address with the R/W bit set to “1”, the master must first perform a “dummy” write operation. This operation
is performed in the following steps:
1. The master first issues a start condition, the slave address, and the word address to be read. (This step sets
the internal word address pointer of the 24LLC16 to the desired address.)
2. When the master receives an ACK for the word address, it immediately re-issues a start condition followed
by another slave address, with the R/W bit set to “1”.
3. The 24LLC16 then sends an ACK and the 8-bit data stored at the pointed address.
4. At this point, the master does not acknowledge the transmission, generating a stop condition.
5. The 24LLC16 stops transmitting data and reverts to stand-by mode (see Figure 5-13).
Slave
Word
Slave
Start
Address
Address
Start
Address
Data (n)
Stop
A
C
K
A
C
K
A
C
K
N
O
A
C
K
Figure 5-13. Random Address Byte Read Operation
* All specs and applications shown above subject to change without prior notice.
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Rev 1.0 Aug.5, 2002
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