Clock operation

M41T62/63/64/65

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Doc ID 10397 Rev 14

Table 9.

Initial power-on default values

Condition

Device

ST OF OFIE OUT

FT

AFE SQWE 32KE RS3-1 RS0 Watchdog

Initial

1.

All other control bits power up in an undetermined state.

M41T62

0

1

0

1

N/A

0

1

N/A

0

1

0

M41T63

0

1

N/A

N/A

N/A N/A

1

N/A

0

1

0

M41T64

0

1

N/A

N/A

N/A N/A

0

1

0

1

0

M41T65

0

1

0

1

0

0

N/A

N/A

N/A

N/A

0

Table 10.

Century bits examples

CB0

CB1

Leap year?

1.

Leap year occurs every four years (for years evenly divisible by four), except for years evenly divisible by

100. The only exceptions are those years evenly divisible by 400 (the year 2000 was a leap year, year

2100 is not).

00

Yes

2000

0

1

No

2100

1

0

No

2200

1

1

No

2300