Datasheet

Instructions M24128-BW M24128-BR M24128-BF M24128-DF
16/39 DocID16892 Rev 24
5.1.2 Page Write
The Page Write mode allows up to 64 bytes to be written in a single Write cycle, provided
that they are all located in the same page in the memory: that is, the most significant
memory address bits, A15/A6, are the same. If more bytes are sent than will fit up to the end
of the page, a “roll-over” occurs, i.e. the bytes exceeding the page end are written on the
same page, from location 0.
The bus master sends from 1 to 64 bytes of data, each of which is acknowledged by the
device if Write Control (
WC) is low. If Write Control (WC) is high, the contents of the
addressed memory location are not modified, and each data byte is followed by a NoAck, as
shown in
Figure 8. After each transferred byte, the internal page address counter is
incremented.
The transfer is terminated by the bus master generating a Stop condition.
Figure 8. Write mode sequences with WC = 1 (data write inhibited)
3TOP
3TART
"YTE7RITE $EVSEL "YTEADDR "YTEADDR $ATAIN
7#
3TART
0AGE7RITE $EVSEL "YTEADDR "YTEADDR $ATAIN
7#
$ATAIN
!)D
0AGE7RITECONTgD
7#CONTgD
3TOP
$ATAIN.
!#+ !#+ !#+ ./!#+
27
!#+ !#+ !#+ ./!#+
27
./!#+ ./!#+