M41T81
Operation
An alternate READ Mode may also be implemented whereby the master reads the M41T81
slave without first writing to the (volatile) address pointer. The first address that is read is the
last one stored in the pointer (see Figure 8 on page 11).
Figure 6.
Slave address location
R/W
START
SLAVE ADDRESS
A
1
1
0
1
0
0
0
AI00602
Figure 7.
READ mode sequence
BUS ACTIVITY:
MASTER
WORD
ADDRESS (An)
SDA LINE
S
S
DATA n
DATA n+1
BUS ACTIVITY:
SLAVE
ADDRESS
SLAVE
ADDRESS
DATA n+X
P
AI00899
Figure 8.
Alternative READ mode sequence
BUS ACTIVITY:
MASTER
SDA LINE
S
DATA n
DATA n+1
DATA n+X
P
BUS ACTIVITY:
SLAVE
ADDRESS
AI00895
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STMICROELECTRONICS [ ST ]
