Preliminary Information
CAT1026, CAT1027
Page Write
The CAT1026 and CAT1027 write up to 16 bytes of data
inasinglewritecycle, byusingthePageWriteoperation.
The page write operation is initiated in the same manner
asthebytewriteoperation,howeverinsteadofterminating
after the initial byte is transmitted, the Master is allowed
to send up to 15 additional bytes. After each byte has
beentransmitted,theCAT1026andCAT1027willrespond
with an acknowledge and internally increment the lower
order address bits by one. The high order bits remain
unchanged.
IftheMastertransmitsmorethan16bytesbeforesending
theSTOPcondition, theaddresscounter‘wrapsaround,’
and previously transmitted data will be overwritten.
When all 16 bytes are received, and the STOP condition
has been sent by the Master, the internal programming
cycle begins. At this point, all received data is written to
the CAT1026 and CAT1027 in a single write cycle.
Figure 9. Byte Write Timing
S
T
A
R
T
S
T
O
P
BUS ACTIVITY:
MASTER
SLAVE
ADDRESS
BYTE
ADDRESS
DATA
SDA LINE
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P
A
C
K
A
C
K
A
C
K
Figure 10. Page Write Timing
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T
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R
T
S
T
O
P
BUS ACTIVITY:
MASTER
SLAVE
ADDRESS
BYTE
ADDRESS (n)
DATA n
DATA n+1
DATA n+15
SDA LINE
S
P
A
C
K
A
C
K
A
C
K
A
C
K
A
C
K
Doc No. 3010, Rev. E
11
CATALYST [ CATALYST SEMICONDUCTOR ]
