CAT1024 datasheet(11/20 Pages) CATALYST

11 / 20 page

CAT1024, CAT1025

Doc No. 3008, Rev. M

Page Write

The CAT1024/25 writes up to 16 bytes of data in a single

write cycle, using the Page Write operation. The page

write operation is initiated in the same manner as the byte

write operation, however instead of terminating after the

initial byte is transmitted, the Master is allowed to send up

to 15 additional bytes. After each byte has been

transmitted, the CAT1024/25 will respond with an

acknowledge and internally increment the lower order

address bits by one. The high order bits remain

unchanged.

If the Master transmits more than 16 bytes before sending

the STOP condition, the address counter ‘wraps around,’

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 CAT1024/25 in a single write cycle.

BYTE

ADDRESS

SLAVE

ADDRESS

DATA

BUS ACTIVITY:

MASTER

SDA LINE

Figure 8. Byte Write Timing

Figure 9. Page Write Timing

BUS ACTIVITY:

MASTER

SDA LINE

DATA n+15

BYTE

ADDRESS (n)

DATA n

DATA n+1

SLAVE

ADDRESS

CAT1024 Datasheet(PDF) 11 Page - Catalyst Semiconductor