M41T00
Device operation
Table 4.
Symbol
RTC power down/up trip points dc characteristics
Parameter(1)(2)
Max(3)
Unit
Min
Typ
(4)
VBAT -0.80
VBAT -0.50 VBAT -0.30
Backup switchover voltage
V
VSO
1. Valid for ambient operating temperature: TA = –40 to 85 °C; VCC = 2.0 to 5.5 V (except where otherwise
noted).
2. All voltages referenced to VSS
.
3. In 3.3 V application, if initial battery voltage is > 3.4 V, it may be necessary to reduce battery voltage (i.e.,
through wave soldering the battery) in order to avoid inadvertent switchover/deselection for VCC -10 %
operation.
4. Switchover and deselect point.
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STMICROELECTRONICS [ ST ]
