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参数资料
| 型号： | M41T81SMY6T |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 时钟/数据恢复及定时提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| 封装： | 0.300 INCH, LEAD FREE, PLASTIC, SOIC-18 |
| 文件页数： | 7/32页 |
| 文件大小： | 524K |
| 代理商： | M41T81SMY6T |
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M41T81S
Clock operation
Doc ID 10773 Rev 6
Table 2.
Clock register map
0 = Must be set to '0'
ABE = Alarm in battery backup mode enable bit
AF = Alarm flag (read only)
AFE = Alarm flag enable flag
BL = Battery low bit
BMB0-BMB4 = Watchdog multiplier bits
CB = Century bit
CEB = Century enable bit
FT = Frequency test bit
HT = Halt update bit
OF = Oscillator fail flag
OFIE = Oscillator fail interrupt enable
OUT = Output level
RB0-RB1 = Watchdog resolution bits
RPT1-RPT5 = Alarm repeat mode bits
RS0-RS3 = SQW frequency
S = Sign bit
SQWE = Square wave enable
ST = Stop bit
WDF = Watchdog flag (read only)
Addr
Function/range BCD
format
D7
D6
D5
D4
D3
D2
D1
D0
00h
0.1 seconds
0.01 Seconds
Seconds
00-99
01h
ST
10 seconds
Seconds
00-59
02h
0
10 minutes
Minutes
00-59
03h
CEB
CB
10 hours
Hours (24-hour format)
Century/hours
0-1/00-23
04h
0000
0
Day of week
Day
01-7
05h
0
10 date
Date: day of month
Date
01-31
06h
0
10M
Month
01-12
07h
10 years
Year
00-99
08h
OUT
FT
S
Calibration
09h
OFIE
BMB4
BMB3
BMB2
BMB1 BMB0
RB1
RB0
Watchdog
0Ah
AFE
SQW
ABE
Al
Alarm month
Al month
01-12
0Bh
RPT4
RPT5
AI 10 date
Alarm date
Al date
01-31
0Ch
RPT3
HT
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
WDF
AF
0
BL
0
OF
0
Flags
10h
0000
0
Reserved
11h
0000
0
Reserved
12h
0000
0
Reserved
13h
RS3
RS2
RS1
RS0
0
SQW
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