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M48T129YPM 데이터시트(PDF) 13 Page - STMicroelectronics

부품명 M48T129YPM
상세설명  3.3V-5V 1 Mbit 128Kb x8 TIMEKEEPER SRAM
PDF  22 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T129YPM 데이터시트(HTML) 13 Page - STMicroelectronics

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M48T129Y, M48T129V
Figure 11. Calibration Waveform
AI00594B
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
Table 11. TIMEKEEPER Register Map
Address
Data
Fun ction/Rang e
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 Hours Format)
Hour
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
A Date
01-31
1FFF4h
RPT3
0
Al 10 Hours
Alarm Hours
A Hours
00-23
1FFF3h
RPT2
Alarm 10 Minutes
Alarm Minutes
A Minutes
00-59
1FFF2h
RPT1
Alarm 10 Seconds
Alarm Seconds
A Seconds
00-59
1FFF1h
1000 Year
100 Year
Century
00-99
1FFF0h
WDF
AF
0
BL
Y
Y
Y
Y
Flags
Keys:
S = SIGN Bit
FT = FREQUENCY TEST Bit
R = READ Bit
W = WRI TE Bit
ST = STOP Bit
0 = Must be set to zero
Y = ’1’ or ’0’
BL = Battery Low
AF = Alarm Flag
WDS = Watchdog Steering Bit
BMB0-BMB4 = Watchdog Multiplier Bits
RB0-RB1 = Watchdog Resolution Bits
AFE = Alarm Flag Enable
ABE = Alarm in Battery Back-up Mode Enable
RPT1-RPT5 = Alarm Repeat Mode Bits
WDF = Watchdog Flag



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