m41t81s STMicroelectronics, m41t81s Datasheet - Page 12

• Manufacturer Part Number: m41t81s
• Description: Serial Access Real-time Clock With Alarms
• Manufacturer: STMicroelectronics

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An alternate READ Mode may also be implemented whereby the master reads the
M41T81S 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 7.
Figure 8.
Figure 9.
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
Slave address location
READ mode sequence
Alternative READ mode sequence
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
S
ADDRESS
SLAVE
S
ADDRESS
START
DATA n+X
SLAVE
ADDRESS (An)
WORD
P
1
DATA n
1
SLAVE ADDRESS
S
0
ADDRESS
Figure 9 on page
1
SLAVE
DATA n+1
0
0
0
R/W
A
DATA n
AI00602
12).
DATA n+1
DATA n+X
AI00895
AI00899
P