參數(shù)資料
型號(hào)： M48T201V-85MH1E
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(yè)數(shù)： 17/37頁(yè)
文件大?。?/td> 311K
代理商： M48T201V-85MH1E
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
相關(guān)PDF資料
PDF描述
M48T201Y-70MH1E 1 TIMER(S), REAL TIME CLOCK, PDSO44
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
M48T201V-85MH1F 功能描述:監(jiān)控電路 SRAM TK Controller RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開(kāi)關(guān):No Backup 上電復(fù)位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel
M48T201V-85MH1TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:5.0 or 3.3V TIMEKEEPER㈢ supervisor
M48T201VMH 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER
M48T201VSH 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER
M48T201Y 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.3V-5V TIMEKEEPER CONTROLLER
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