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M41T82 Datasheet(PDF) 22 Page - STMicroelectronics

Part # M41T82
Description  Serial I2C bus RTC with battery switchover
PDF  61 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T82 Datasheet(HTML) 22 Page - STMicroelectronics

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Clock operation
M41T82-M41T83
22/61
Doc ID 12578 Rev 12
Table 3.
Key to Table 2: M41T82 clock/control register map (32 bytes)
Code
Explanation
0
Must be set to zero
ABE
Alarm in battery backup enable bit
AC0-AC6
Analog calibration bits
ACS
Analog calibration sign bit
AF1, AF2
Alarm flag bits
AL2E
Alarm 2 enable bit
BL
Battery low bit
BMB0-BMB4
Watchdog multiplier bits
CB0, CB1
Century bits
DC0-DC4
Digital calibration bits
DCS
Digital calibration sign bit
FT
Frequency test bit
HT
Halt update bit
OF
Oscillator fail bit
RB0-RB2
Watchdog resolution bits
RPT11-RPT15
Alarm 1 repeat mode bits
RPT21-RPT25
Alarm 2 repeat mode bits
ST
Stop bit
TD0, TD1
Timer frequency bits
TE
Timer enable bit
TF
Timer flag
WDF
Watchdog flag



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