Datasheet

Operation M41T81
10/29 Doc ID 7529 Rev 10
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 10).
Figure 6. Slave address location
Figure 7. READ mode sequence
Figure 8. Alternative READ mode sequence
AI00602
R/W
SLAVE ADDRESS
STA RT A
0100011
MSB
LSB
AI00899
BUS ACTIVITY:
ACK
S
ACK ACK ACK
NO ACK
STOP
START
P
SDA LINE
BUS ACTIVITY:
MASTER
R/W
DATA n DATA n+1
DATA n+X
WORD
ADDRESS (An)
SLAVE
ADDRESS
S
START R/W
SLAVE
ADDRESS
ACK
AI00895
BUS ACTIVITY:
ACK
S
ACK ACK ACK
NO ACK
STOP STA RT
PSDA LINE
BUS ACTIVITY:
MASTER
R/W
DATA n DATA n+1 DATA n+X
SLAVE
ADDRESS