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M41T82 Datasheet(PDF) 50 Page - STMicroelectronics

Part # M41T82
Description  Serial I2C bus RTC with battery switchover
PDF  61 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T82 Datasheet(HTML) 50 Page - STMicroelectronics

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DC and AC parameters
M41T82-M41T83
50/61
Doc ID 12578 Rev 12
Figure 26.
Power down/up mode AC waveforms
Table 25.
Power down/up trip points DC characteristics
Sym
Parameter(1)(2)
1.
All voltages referenced to VSS
2.
Valid for ambient operating temperature: TA = –40 to 85 °C; VCC = 2.38 to 5.5 V (except where noted)
Min
Typ
Max
Unit
VRST
Reset threshold voltage
S
2.85
2.93
3.0
V
R
2.55
2.63
2.7
V
Z
2.252.322.38
V
VSO
Battery backup switchover
VRST
V
Hysteresis
25
mV
trec
RST duration after VCC high
140
280
ms
tRD
VCC to reset delay
(3)
3.
Measured with VCC falling slew rate of 10 mV/µs for VCC in the range VRST + 100 mV to VRST – 100 mV
2.5
µs
AI00596
VCC
trec
VSO
SDA, SCL
DON'T CARE
VRST
RST
tRD



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