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M41T80 датащи(PDF) 14 Page - STMicroelectronics

номер детали M41T80
подробное описание детали  Serial access real-time clock with alarm
PDF  27 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T80 датащи(HTML) 14 Page - STMicroelectronics

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Clock operation
M41T80
14/27
Doc ID 9074 Rev 5
Table 3.
Clock register map(1)
1.
Keys:
ST = Stop bit
0 = Must be set to '0'
32KE = Enable bit for 32 KHz output
CEB = Enable for century bit
CB = Century bit
OUT = Data bit for OUT pin
AFE = Alarm flag enable bit
RPT1-RPT5 = Alarm repeat mode bits
AF = Alarm flag (read only)
SQWE = Square wave enable
RS0-RS3 = SQW frequency select
Addr
Function/range BCD
format
D7
D6
D5
D4
D3
D2
D1
D0
00h
0.1 seconds
0.01 seconds
10s/100s
of seconds
00-99
01h
ST
10 seconds
Seconds
Seconds
00-59
02h
0
10 minutes
Minutes
Minutes
00-59
03h
CEB
CB
10 hours
Hours (24-hour format)
Century/
hours
0-1/00-23
04h
0
0
0
0
0
Day of week
Day
01-7
05h
0
0
10 date
Date: day of month
Date
01-31
06h
0
0
0
10M
Month
Month
01-12
07h
10 years
Year
Year
00-99
08h
OUT
0
0
0
0
0
0
0
Control
09h
32KE
0
0
0
0
0
0
0
32 KHz
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
0
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
0
000
Flags
10h
000
0
0
0
0
0
Reserved
11h
000
0
0
0
0
0
Reserved
12h
000
0
0
0
0
0
Reserved
13h
RS3
RS2
RS1
RS0
0
0
0
0
SQW



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