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參數(shù)資料
| 型號： | M48T201Y-70MH1F |
| 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： | 1 TIMER(S), REAL TIME CLOCK, PDSO44 |
| 封裝： | SNAPHAT, ROHS COMPLIANT, PLASTIC, SOIC-44 |
| 文件頁數(shù)： | 17/37頁 |
| 文件大?。?/td> | 311K |
| 代理商： | M48T201Y-70MH1F |
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Clock operation
M48T201Y, M48T201V
Figure 10.
Crystal accuracy across temperature
Figure 11.
Calibration waveform
3.11
Battery low warning
The M48T201Y/V automatically performs battery voltage monitoring upon power-up and at
factory-programmed time intervals of approximately 24 hours. The battery low (BL) bit, bit
D4 of flags register 7FFF0h, will be asserted if the battery voltage is found to be less than
approximately 2.5 V. The BL bit will remain asserted until completion of battery replacement
and subsequent battery low monitoring tests, either during the next power-up sequence or
the next scheduled 24-hour interval.
If a battery low is generated during a power-up sequence, this indicates that the battery is
below approximately 2.5 V and may not be able to maintain data integrity in the SRAM. Data
should be considered suspect and verified as correct. A fresh battery should be installed.
AI00999
–160
0
10203040506070
Frequency (ppm)
Temperature
°C
80
–10
–20
–30
–40
–100
–120
–140
–40
–60
–80
20
0
–20
ΔF
= -0.038
(T - T
0)
2 ± 10%
F
ppm
C
2
T
0 = 25 °C
AI00594B
NORMAL
POSITIVE
CALIBRATION
NEGATIVE
CALIBRATION
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M48T201Y-70MH1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V TIMEKEEPER㈢ supervisor |
| M48T201Y-80MH1 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V TIMEKEEPER? supervisor |
| M48T201Y-80MH1E | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V TIMEKEEPER? supervisor |
| M48T201Y-80MH1F | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V TIMEKEEPER? supervisor |
| M48T201Y-80MH1TR | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3 V TIMEKEEPER? supervisor |
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