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M41T50 Datasheet(PDF) 12 Page - STMicroelectronics

Part # M41T50
Description  Serial Access Digital Input Real-Time Clock with Alarms
PDF  23 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T50 Datasheet(HTML) 12 Page - STMicroelectronics

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M41T50
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Table 2. TIMEKEEPER® Register Map
Keys: 0 = Must be set to '0'
AF = Alarm Flag (Read only)
AFE = Alarm Flag Enable Flag
CB0-CB1 = Century Bits
OUT = Output level
SQWOD = Square Wave output Open Drain Bit
RPT1-RPT5 = Alarm Repeat Mode Bits
SQWE = Square Wave Enable Bit
ST = Stop Bit
60Hz = 50Hz or 60Hz Select Bit
Addr
Function/Range BCD
Format
D7
D6
D5
D4
D3
D2
D1
D0
00h
0
0
0
0
0
0
0
0
Reserved0
01h
ST
10 Seconds
Seconds
Seconds
00-59
02h
0
10 Minutes
Minutes
Minutes
00-59
03h
0
0
10 Hours
Hours (24 Hour Format)
Hours
00-23
04h
0
0
0
0
0
Day of Week
Day
01-7
05h
60Hz
0
10 Date
Date: Day of Month
Date
01-31
06h
CB1
CB0
0
10M
Month
Century/
Month
0-3/01-12
07h
10 Years
Year
Year
00-99
08h
OUT
0
0
0
00
00
Out
09h
0
0
0
0
0
0
0
0
Reserved1
0Ah
AFE
SQWE
0
Al 10M
Alarm Month
Al Month
01-12
0Bh
RPT4
RPT5
AI 10 Date
Alarm Date
Al Date
01-31
0Ch
RPT3
SQWOD
AI 10 Hour
Alarm Hour
Al Hour
00-23
0Dh
RPT2
Alarm 10 Minutes
Alarm Minutes
Al Min
00-59
0Eh
RPT1
Alarm 10 Seconds
Alarm Seconds
Al Sec
00-59
0Fh
0
AF
0
0
00
00
Flags



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