M41T256YMT7F Просмотр технического описания (PDF) - STMicroelectronics
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M41T256YMT7F Datasheet PDF : 27 Pages
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M41T256Y
Table 3. TIMEKEEPER® Register Map
Data
Address
D7
D6
D5
D4
D3
D2
D1
D0
7FFFh
10 Years
Year
7FFEh
0
0
0
10M
Month
Function/Range
BCD Format
Year
Month
00-99
01-12
7FFDh
0
7FFCh BL
7FFBh
0
0
10 Date
FT TEB TB
0
10 Hours
Date: Day of Month
0
Day of Week
Hours (24 Hour Format)
Date
Tamper/Day
Hours
01-31
0-1/01-07
00-23
7FFAh
0
10 Minutes
7FF9h
ST
10 Seconds
7FF8h WC SLP
S
Minutes
Seconds
Calibration
Minutes
Seconds
Control
00-59
00-59
7FF7h
0.1 Seconds
7FF6h
X
X
X
X
7FF5h
X
X
X
X
0.01 Seconds
X
X
X
X
X
X
X
X
Seconds
Reserved
Reserved
00-99
7FF4h
X
X
X
X
X
X
X
X
Reserved
7FF3h
X
X
X
X
X
X
X
X
Reserved
7FF2h
X
X
X
X
X
X
X
X
Reserved
7FF1h
X
X
X
X
X
X
X
X
Reserved
7FF0h
X
X
X
X
X
X
X
X
Reserved
Keys: S = Sign Bit
BL = Battery Low Flag (Read only bit)
FT = Frequency Test Bit
TB = Tamper Bit (Read only bit)
ST = Stop Bit
TEB = Tamper Enable Bit
WC = Write Clock Bit
0 = Must be set to '0'
X = '1' or '0'
SLP = Sleep Mode Bit
Note: 7FF0h through 7FF6h are invalid addresses and when read will return arbitrary data.
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