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M41T81S Datasheet(PDF) 22 Page - STMicroelectronics

No. de pieza M41T81S
Descripción Electrónicos  Serial Access Real-Time Clock with Alarms
PDF  29 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M41T81S Datasheet(HTML) 22 Page - STMicroelectronics

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Figure 17. Power Down/Up Mode AC Waveforms
Table 11. Power Down/Up AC Characteristics
Note: 1. VCC fall time should not exceed 5mV/µs.
2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.7 to 5.5V (except where noted).
Table 12. Power Down/Up Trip Points DC Characteristics
Note: 1. All voltages referenced to VSS.
2. Valid for Ambient Operating Temperature: TA = –40 to 85°C; VCC = 2.7 to 5.5V (except where noted).
Symbol
Parameter(1,2)
Min
Typ
Max
Unit
tPD
SCL and SDA at VIH before Power Down
0nS
trec
SCL and SDA at VIH after Power Up
10
µS
Sym
Parameter(1,2)
Min
Typ
Max
Unit
VPFD
Power-fail Deselect
2.5
2.6
2.7
V
Hysteresis
25
mV
VSO
Battery Back-up Switchover Voltage
(VCC < VBAT; VCC < VPFD)
VBAT < VPFD
VBAT
V
VBAT > VPFD
VPFD
V
Hysteresis
40
mV
AI00596
VCC
trec
tPD
VSO
SDA
SCL
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