SA24C1024 Datasheet, PDF (19/27 Pages) List of Unclassifed Manufacturers – 1024Kb EEPROM IIC

Acknowledge Polling
Once the STOP condition is issued to
indicate the end of the host’s Write
operation, the SA24C1024 initiates the
internal write cycle. ACK polling can be
initiated immediately, which involves
issuing the START condition followed by
the Slave address for a Write operation.
If the SA24C1024 is still busy with the
Write operation, no ACK is returned. If the
SA24C1024 has completed the Write
operation, an ACK is returned and the host
can then proceed with the next Read or
Write operation.
SA24C1024 Datasheet
SAIFUN
19
Write Protection
Programming of the memory does not take
place if the SA24C1024's WP pin is pulled
HIGH. The SA24C1024 responds to Slave
and byte addresses but does not generate
an ACK after the first byte of data has been
received. This means that the program
cycle is not started when the STOP
condition is asserted.
S
T
Bus Activity: A
Master
R
T
SLAVE
ADDRESS
WORD
ADDRESS
S
T
DATA
O
P
SDA Line
10100100
Bus Activity:
EEPROM
AA A
1d C
dK
A
C
K
A
C
K
16
Figure 13. Byte Write
S
T
Bus Activity: A
Master
R
T
SLAVE
ADDRESS
WORD
ADDRESS (n)
SDA Line
10100100
Bus Activity:
EEPROM
AA A
1d C
dK
A
C
K
16
DATA n
DATA n + 1
A
A
C
C
K
K
S
T
DATA n + 15
O
P
A
C
K
Figure 14. Page Write