M41T00S_08 STMICROELECTRONICS [STMicroelectronics], M41T00S_08 Datasheet - Page 11

• Manufacturer Part Number: M41T00S_08
• Description: Serial access real-time clock
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

2.4
Figure 9.
BUS ACTIVITY:
MASTER
SDA LINE
BUS ACTIVITY:
Data retention mode
With valid V
WRITE cycles. Should the supply voltage decay, the power input will be switched from the
V
this time the clock registers will be maintained by the attached battery supply. On power-up,
when V
For a further, more detailed review of lifetime calculations, please see Application Note
AN1012.
WRITE mode sequence
CC
pin to the battery when V
CC
S
returns to a nominal value, write protection continues for t
ADDRESS
CC
SLAVE
applied, the M41T00S can be accessed as described above with READ or
ADDRESS (An)
WORD
CC
falls below the battery backup switchover voltage (V
DATA n
DATA n+1
REC
DATA n+X
.
AI00591
P
SO
11/26
). At