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參數(shù)資料
| 型號： | M48T212V-85MH1F |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 時鐘/數(shù)據(jù)恢復及定時提取 |
| 英文描述： | REAL TIME CLOCK, PDSO44 |
| 封裝： | 0.330 INCH, ROHS COMPLIANT, PLASTIC, SOH-44 |
| 文件頁數(shù)： | 7/35頁 |
| 文件大?。?/td> | 348K |
| 代理商： | M48T212V-85MH1F |
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Product(s)
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Product(s)
M48T212V
Operation
making the final choice of an SRAM to use. The SRAM must be designed in a way where
the chip enable input disables all other inputs to the SRAM. This allows inputs to the
M48T212V and SRAMs to be “Don't care” once VCC falls below VPFD(min). The SRAM
should also guarantee data retention down to VCC = 2.0V. The chip enable access time must
be sufficient to meet the system needs with the chip enable output propagation delays
included.
If the SRAM includes a second chip enable pin (E2), this pin should be tied to VOUT.
If data retention lifetime is a critical parameter for the system, it is important to review the
data retention current specifications for the particular SRAMs being evaluated. Most SRAMs
specify a data retention current at 3.0V. Manufacturers generally specify a typical condition
for room temperature along with a worst case condition (generally at elevated
temperatures). The system level requirements will determine the choice of which value to
use.
The data retention current value of the SRAMs can then be added to the IBAT value of the
M48T212V to determine the total current requirements for data retention. The available
battery capacity for the SNAPHAT of your choice can then be divided by this current to
determine the amount of data retention available (see Table 20 on page 33).
For a further more detailed review of lifetime calculations, please see Application Note
AN1012.
相關PDF資料 |
PDF描述 |
|---|---|
| M48T212V-85MH1E | REAL TIME CLOCK, PDSO44 |
| M48T35V-10PC1 | 1 TIMER(S), REAL TIME CLOCK, PDIP28 |
| M48T35V-10MH1 | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T35V-10MH1TR | 1 TIMER(S), REAL TIME CLOCK, PDSO28 |
| M48T512V-85PM1 | 0 TIMER(S), REAL TIME CLOCK, PDIP32 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M48T212V-85MH1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER[ CONTROLLER |
| M48T212V-85MH6 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER[ CONTROLLER |
| M48T212V-85MH6E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER CONTROLLER Supervisor |
| M48T212V-85MH6F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER CONTROLLER Supervisor |
| M48T212V-85MH6TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5V/3.3V TIMEKEEPER[ CONTROLLER |
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