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參數(shù)資料
| 型號(hào)： | M41T81M6TR |
| 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, PDSO8 |
| 封裝： | 0.150 INCH, PLASTIC, SO-8 |
| 文件頁(yè)數(shù)： | 14/27頁(yè) |
| 文件大?。?/td> | 388K |
| 代理商： | M41T81M6TR |
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M41T81
Table 9. DC Characteristics
Note: 1. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.0 to 5.5V (except where noted).
2. STMicroelectronics recommends the RAYOVAC BR1225 or BR1632 (or equivalent) as the battery supply.
3. After switchover (VSO), VBAT (min) can be 2.0V for crystal with RS = 40K.
4. For rechargeable back-up, VBAT (max) may be considered VCC.
5. For IRQ/FT/OUT/SQW pin (Open Drain)
Table 10. Crystal Electrical Characteristics
Note: 1. Externally supplied. STMicroelectronics recommends the KDS DT-38: 1TA/1TC252E127, Tuning Fork Type (thru-hole) or the DMX-
26S: 1TJS125FH2A212, (SMD) quartz crystal for industrial temperature operations. KDS can be contacted at kouhou@kdsj.co.jp
or http://www.kdsj.co.jp for further information on this crystal type.
2. Load capacitors are integrated within the M41T81. Circuit board layout considerations for the 32.768kHz crystal of minimum trace
lengths and isolation from RF generating signals should be taken into account.
Sym
Parameter
Test Condition(1)
Min
Typ
Max
Unit
ILI
Input Leakage Current
0V
≤ VIN ≤ VCC
±1
A
ILO
Output Leakage Current
0V
≤ VOUT ≤ VCC
±1
A
ICC1
Supply Current
Switch Freq = 400kHz
400
A
ICC2
Supply Current (standby)
SCL,SDA = VCC – 0.3V
100
A
VIL
Input Low Voltage
–0.3
0.3VCC
V
VIH
Input High Voltage
0.7VCC
VCC + 0.3
V
VOL
Output Low Voltage
IOL = 3.0mA
0.4
V
Output Low Voltage (Open Drain)(5)
IOL = 10mA
0.4
V
Pull-up Supply Voltage (Open Drain)
IRQ/OUT/FT/SQW
5.5
V
VBAT
(2)
Battery Supply Voltage
2.5(3)
3
3.5(4)
V
IBAT
Battery Supply Current
TA = 25°C, VCC = 0V
Oscillator ON, VBAT = 3V
0.6
1
A
Sym
Parameter(1,2)
Min
Typ
Max
Units
fO
Resonant Frequency
32.768
kHz
RS
Series Resistance
60
k
CL
Load Capacitance
12.5
pF
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| M41T81MX | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SERIAL ACCESS RTC WITH ALARMS |
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| M41T81MY6 | 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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