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M48T212V Datasheet(PDF) 18 Page - STMicroelectronics

Part # M48T212V
Description  3.3V TIMEKEEPER supervisor
PDF  35 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T212V Datasheet(HTML) 18 Page - STMicroelectronics

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Clock operation
M48T212V
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Table 7.
TIMEKEEPER® register map
Keys:
S = Sign bit
FT = Frequency test bit
R = READ bit
W = WRITE bit
ST = Stop bit
0 = Must be set to '0'
BL = Battery low flag (read only)
BMB0-BMB4 = Watchdog multiplier bits
AFE = Alarm flag enable flag
RB0-RB1 = Watchdog resolution bits
WDS = Watchdog steering bit
ABE = Alarm in battery back-up mode enable bit
RPT1-RPT5 = Alarm repeat mode bits
WDF = Watchdog flag (read only)
AF = Alarm flag (read only)
Y = '1' or '0'
Address
Function/range
BCD format
D7
D6
D5
D4
D3
D2
D1
D0
Fh
10 Years
Year
Year
00-99
Eh
0
0
0
10M
Month
Month
01-12
Dh
0
0
10 date
Date: Day of month
Date
01-31
Ch
0
FT
0
0
0
Day of week
Day
01-7
Bh
0
0
10 hours
Hours (24 hour format)
Hours
00-23
Ah
0
10 minutes
Minutes
Min
00-59
9h
ST
10 seconds
Seconds
Sec
00-59
8h
W
R
S
Calibration
Control
7h
WDS
BMB4 BMB3
BMB2
BMB1 BMB0
RB1
RB0
Watchdog
6h
AFE
0
ABE
Al 10M
Alarm month
A month
01-12
5h
RPT4
RPT5
AI 10 date
Alarm date
A date
01-31
4h
RPT3
0
AI 10 hour
Alarm hour
A hour
00-23
3h
RPT2
Alarm 10 minutes
Alarm minutes
A min
00-59
2h
RPT1
Alarm 10 seconds
Alarm seconds
A sec
00-59
1h
1000 year
100 year
Century
00-99
0h
WDF
AF
Y
BL
YYYY
Flag



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