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M48T129Y датащи(PDF) 13 Page - STMicroelectronics

номер детали M48T129Y
подробное описание детали  5.0 or 3.3 V, 1 Mbit (128 Kbit x 8) TIMEKEEPER짰 SRAM
PDF  28 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T129Y датащи(HTML) 13 Page - STMicroelectronics

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M48T129V, M48T129Y
Clock operations
Doc ID 5710 Rev 4
13/28
Table 5.
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'
Y = '1' or '0‘
BL = Battery low (read only)
AF = Alarm flag (read only)
WDS = Watchdog steering bit
BMB0-BMB4 = Watchdog multiplier bits
RB0-RB1 = Watchdog resolution bits
AFE = Alarm flag enable
ABE = Alarm in battery backup mode enable
RPT1-RPT5 = Alarm repeat mode bits
WDF = Watchdog flag (read only)
Address
Data
Function/range
BCD format
D7
D6
D5
D4
D3
D2
D1
D0
1FFFFh
10 Years
Year
Year
00-99
1FFFEh
0
0
0
10 M
Month
Month
01-12
1FFFDh
0
0
10 date
Date
Date
01-31
1FFFCh
0
FT
0
0
0
Day of week
Day
01-07
1FFFBh
0
0
10 hours
Hours (24-hour format)
Hours
00-23
1FFFAh
0
10 minutes
Minutes
Minutes
00-59
1FFF9h
ST
10 seconds
Seconds
Seconds
00-59
1FFF8h
W
R
S
Calibration
Control
1FFF7h
WDS
BMB4 BMB3
BMB2
BMB1 BMB0
RB1
RB0
Watchdog
1FFF6h
AFE
0
ABE
Al 10M
Alarm month
A month
01-12
1FFF5h
RPT4
RPT5
Al 10 date
Alarm date
Al date
01-31
1FFF4h
RPT3
0
Al 10 hours
Alarm hours
A hours
00-23
1FFF3h
RPT2
Al 10 minutes
Alarm minutes
A min
00-59
1FFF2h
RPT1
Al 10 seconds
Alarm seconds
A sec
00-59
1FFF1h
1000 year
100 year
Century
00-99
1FFF0h
WDF
AF
0
BL
Y
Y
Y
Y
Flag



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