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M48T201V Fiches technique(PDF) 17 Page - STMicroelectronics

No de pièce M48T201V
Description  5.0 or 3.3V TIMEKEEPER짰 supervisor
PDF  35 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T201V Fiches technique(HTML) 17 Page - STMicroelectronics

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M48T201Y, M48T201V
Clock operation
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Note:
It is not necessary to set the WRITE Bit when setting or resetting the FREQUENCY TEST
Bit (FT) or the STOP Bit (ST).
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'
WDS = Watchdog Steering Bit
AF = Alarm Flag
BL = Battery Low Flag
SQWE = Square Wave Enable Bit
BMB0-BMB4 = Watchdog Multiplier Bits
RB0-RB1 = Watchdog Resolution Bits
AFE = Alarm Flag Enable Flag
ABE = Alarm in Battery Back-Up Mode Enable Bit
RPT1-RPT5 = Alarm Repeat Mode Bits
WDF = Watchdog Flag
RS0-RS3 = SQW Frequency
Address
Data
Function/range
BCD format
D7
D6
D5
D4
D3
D2
D1
D0
7FFFFh
10 Years
Year
Year
00-99
7FFFEh
0
0
0
10 M
Month
Month
01-12
7FFFDh
0
0
10 Date
Date: Day of Month
Date
01-31
7FFFCh
0
FT
0
0
0
Day
Day
01-07
7FFFBh
0
0
10 Hours
Hours (24 Hour Format)
Hours
00-23
7FFFAh
0
10 Minutes
Minutes
Minutes
00-59
7FFF9h
ST
10 Seconds
Seconds
Seconds
00-59
7FFF8h
W
R
S
Calibration
Control
7FFF7h
WDS
BMB4
BMB3
BMB2
BMB1
BMB0
RB1
RB0
Watchdog
7FFF6h
AFE
SQWE
ABE
Al.10M
Alarm Month
Al. Month
01-12
7FFF5h
RPT4
RPT5
Al. 10 Date
Alarm Date
Al. Date
01-31
7FFF4h
RPT3
0
Al. 10 Hours
Alarm Hours
Al. Hours
00-23
7FFF3h
RPT2
Alarm 10 Minutes
Alarm Minutes
Al. Minutes
00-59
7FFF2h
RPT1
Alarm 10 Seconds
Alarm Seconds
Al. Seconds
00-59
7FFF1h
1000 Years
100 Years
Century
00-99
7FFF0h
WDF
AF
0
BL
RS3
RS2
RS1
RS0
Flags



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