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M41T82 数据表(PDF) 24 Page - STMicroelectronics

部件名 M41T82
功能描述  Serial I2C bus RTC with battery switchover
PDF  61 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

M41T82 数据表(HTML) 24 Page - STMicroelectronics

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Clock operation
M41T82-M41T83
24/61
Doc ID 12578 Rev 12
Table 5.
Key to Table 4: M41T83 clock/control register map (32 bytes)
Code
Explanation
0
Must be set to zero
ABE
Alarm in battery back-up enable bit
A1IE, A2IE
Alarm interrupt enable bits
AC0-AC6
Analog calibration bits
ACS
Analog calibration sign bit
AF1, AF2
Alarm flag
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
OUT
Output level
OFIE
Oscillator fail interrupt enable
OTP
OTP control bit
RB0-RB2
Watchdog resolution bits
RPT11-RPT15
Alarm 1 repeat mode bits
RPT21-RPT25
Alarm 2 repeat mode bits
RS0-RS3
SQW frequency
SQWE
Square wave enable
SRAM/ALM2
SRAM/alarm 2 bit
ST
Stop bit
TD0, TD1
Timer frequency bits
TE
Timer enable bit
TF
Timer flag
TI/TP
Timer interrupt or pulse
TIE
Timer interrupt enable
WDF
Watchdog flag



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