參數(shù)資料
型號(hào)： M41T81MY6TR
廠商： STMICROELECTRONICS
元件分類(lèi)： 時(shí)鐘/數(shù)據(jù)恢復(fù)及定時(shí)提取
英文描述： 1 TIMER(S), REAL TIME CLOCK, PDSO18
封裝： 0.300 INCH, PLASTIC, SO-18
文件頁(yè)數(shù)： 11/30頁(yè)
文件大?。?/td> 436K
代理商： M41T81MY6TR
19/30
M41T81
Century Bit
Bits D7 and D6 of Clock Register 03h 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.
Output Driver Pin
When the FT Bit, AFE Bit, SQWE Bit, and Watch-
dog Register are not set, the IRQ/FT/OUT/SQW
pin becomes an output driver that reflects the con-
tents of D7 of the Control Register. In other words,
when D7 (OUT Bit) and D6 (FT Bit) of address lo-
cation 08h are a '0,' then the IRQ/FT/OUT/SQW
pin will be driven low.
Note: The IRQ/FT/OUT/SQW pin is an open drain
which requires an external pull-up resistor.
Preferred Initial Power-on Default
Upon initial application of power to the device, the
following register bits are set to a '0' state: Watch-
dog Register; AFE; ABE; SQWE; and FT. The fol-
lowing bits are set to a '1' state: ST; OUT; and HT
Table 5. Preferred Default Values
Note: 1. BMB0-BMB4, RB0, RB1.
2. State of other control bits undefined.
3. UC = Unchanged
Condition
ST
HT
Out
FT
AFE
SQWE
ABE
WATCHDOG
Register(1)
Initial Power-up(2)
111000
0
Subsequent Power-up (with battery
back-up)(3)
UC
1
UC
0
UC
0
相關(guān)PDF資料
PDF描述
M41T81MX6 1 TIMER(S), REAL TIME CLOCK, PDSO28
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M41T81S 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial access real-time clock with alarms
M41T81S_07 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial access real-time clock with alarms
M41T81S_12 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial access real-time clock (RTC) with alarms
M41T81SM6E 功能描述:實(shí)時(shí)時(shí)鐘 2.0-5.5V 512 (64x8) 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
M41T81SM6ET 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial Access Real-Time Clock with Alarms
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