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參數(shù)資料
| 型號(hào)： | M41T00SMY6T |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取 |
| 英文描述： | REAL TIME CLOCK, PDSO8 |
| 封裝： | 0.300 INCH, PLASTIC, SO-8 |
| 文件頁(yè)數(shù)： | 6/24頁(yè) |
| 文件大?。?/td> | 327K |
| 代理商： | M41T00SMY6T |
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M41T00S
14/24
Century Bit
Bits D7 and D6 of Clock Register 02h contain the
CENTURY ENABLE Bit (CEB) and the CENTURY
Bit (CB). Setting CEB to a '1' will cause CB to tog-
gle, either from a '0' to '1' or from '1' to '0' at the turn
of the century (depending upon its initial state). If
CEB is set to a '0,' CB will not toggle.
Oscillator Fail Detection
If the Oscillator Fail Bit (OF) is internally set to '1,'
this indicates that the oscillator has either stopped,
or was stopped for some period of time and can be
used to judge the validity of the clock and date da-
ta.
In the event the OF Bit is found to be set to '1' at
any time other than the initial power-up, the STOP
Bit (ST) should be written to a '1,' then immediately
reset to '0.' This will restart the oscillator.
The following conditions can cause the OF Bit to
be set:
–
The first time power is applied (defaults to a '1'
on power-up).
–
The voltage present on VCC is insufficient to
support oscillation.
–
The ST Bit is set to '1.'
–
External interference of the crystal.
The OF Bit will remain set to '1' until written to logic
'0.' The oscillator must start and have run for at
least 4 seconds before attempting to reset the OF
Bit to '0.'
Output Driver Pin
When the FT Bit is not set, the FT/OUT pin be-
comes an output driver that reflects the contents of
D7 of the Calibration Register. In other words,
when D7 (OUT Bit) and D6 (FT Bit) of address lo-
cation 07h are a '0,' then the FT/OUT pin will be
driven low.
Note: The FT/OUT pin is an open drain which re-
quires an external pull-up resistor.
Preferred Initial Power-on Default
Upon initial application of power to the device, the
ST and FT bits are set to a '0' state, and the OF
and OUT Bits will be set to a '1.' All other Register
bits will initially power-on in a random state (see
Table 3).
Table 3. Preferred Default Values
Note: 1. State of other control bits undefined.
2. UC = Unchanged
Condition
ST
Out
FT
OF
Initial Power-up(1)
010
1
Subsequent Power-up (with battery back-up)(2)
UC
0
UC
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| M41T00 | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| M41T0DS6E | REAL TIME CLOCK, PDSO8 |
| M41T256YMH7TR | 0 TIMER(S), REAL TIME CLOCK, PDSO44 |
| M41T256YMT7F | REAL TIME CLOCK, PDSO44 |
| M41T56MH6F | REAL TIME CLOCK, PDSO28 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M41T01M6F | 制造商:STMicroelectronics 功能描述:REAL TIME CLOCKS 制造商:STMicroelectronics 功能描述:IC RTC SERIAL LP 8SOIC |
| M41T0DS6E | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 64 (8x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T0DS6F | 功能描述:實(shí)時(shí)時(shí)鐘 Low Power Serial RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T0DS6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SERIAL REAL-TIME CLOCK |
| M41T0DW6E | 功能描述:實(shí)時(shí)時(shí)鐘 Serial 64 (8x8) RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時(shí)間格式:HH:MM:SS RTC 存儲(chǔ)容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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