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參數(shù)資料
| 型號： | M41T82ZQA6E |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, QFN-16 |
| 文件頁數(shù)： | 13/58頁 |
| 文件大?。?/td> | 462K |
| 代理商： | M41T82ZQA6E |
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Operation
M41T82 M41T83
2.4
Data retention and battery switchover (VSO = VRST)
Once VCC falls below the switchover voltage (VSO = VRST), the device automatically
switches over to the battery and powers down into an ultra low current mode of operation to
preserve battery life. If VBAT is less than, or greater than VRST, the device power is switched
clock registers and user RAM will be maintained by the attached battery supply.
When it is powered back up, the device switches back from battery to VCC at VSO +
hysteresis. When VCC rises above VRST, it will recognize the inputs. For more information
on battery storage life refer to Application Note AN1012.
2.5
Power-on reset (trec)
The M41T8x continuously monitors VCC. When VCC falls to the power fail detect trip point,
the RST output pulls low (open drain) and remains low after power-up for trec (210 ms
typical) after VCC rises above VRST (max).
Note:
The trec period does not affect the RTC operation. Write protect only occurs when VCC is
below VRST. When VCC rises above VRST, the RTC will be selectable immediately. Only the
RST output is affected by the trec period.
The RST pin is an open drain output and an appropriate pull-up resistor to VCC should be
chosen to control the rise time.
相關PDF資料 |
PDF描述 |
|---|---|
| M41T82RQA6F | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
| M41T82RMY6F | 1 TIMER(S), REAL TIME CLOCK, PDSO18 |
| M41T82SQA6F | 1 TIMER(S), REAL TIME CLOCK, QCC16 |
| M41T83RM6F | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
| M41T83ZM6E | 1 TIMER(S), REAL TIME CLOCK, PDSO8 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M41T82ZQA6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial I2C bus RTC with battery switchover |
| M41T83 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial I2C bus RTC with battery switchover |
| M41T83_12 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial I2C bus real-time clock (RTC) with battery switchover |
| M41T83RM6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
| M41T83RM6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Serial RTC with battery switchover |
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