m41t81 STMicroelectronics, m41t81 Datasheet - Page 11

• Manufacturer Part Number: m41t81
• Description: Serial Access Real-time Clock With Alarms
• Manufacturer: STMicroelectronics

M41T81
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 6.
Figure 7.
Figure 8.
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
Slave address location
READ mode sequence
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
Alternative READ mode sequence
S
ADDRESS
START
S
SLAVE
ADDRESS
SLAVE
DATA n+X
ADDRESS (An)
Figure 8 on page
WORD
1
DATA n
P
1
SLAVE ADDRESS
0
S
ADDRESS
1
SLAVE
DATA n+1
0
11).
0
0
DATA n
R/W
A
AI00602
DATA n+1
AI00899
DATA n+X
Operation
AI00895
P
11/30