M41T66Q6F STMicroelectronics, M41T66Q6F Datasheet - Page 22

• Manufacturer Part Number: M41T66Q6F
• Description: IC RTC SERIAL W/ALARM 16-QFN
• Manufacturer: STMicroelectronics
• Type: Clock/Calendar/Alarmr

Specifications of M41T66Q6F

• Memory Size: 16B
• Time Format: HH:MM:SS:hh (24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 1.5 V ~ 4.4 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8377-2

Clock operation
3.9
22/33
Initial power-on defaults
Upon application of power to the device, the register bits will initially power-on in the state
indicated in
Table 5.
1. All other control bits power-up in an undetermined state.
Table 6.
1. Leap year occurs every four years (for years evenly divisible by four), except for years evenly divisible by
Initial power-up
100. The only exceptions are those years evenly divisible by 400 (the year 2000 was a leap year, year
2100 is not).
Condition
CB0
0
0
1
1
Table
Initial power-on default values
Century bits examples
(1)
5.
ST
0
OF
1
OFIE
CB1
0
1
0
1
0
OUT
1
AFE
0
Leap year?
SQWE
Yes
No
No
No
1
RS3-1
0
RS0
1
Example
2000
2100
2200
2300
Watchdog
M41T66
(1)
0