M41T00 Просмотр технического описания (PDF) - STMicroelectronics

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M41T00

Serial real-time clock

STMicroelectronics 

M41T00

Device operation

Table 4. RTC power down/up trip points dc characteristics

Symbol

Parameter(1)(2)

Min

Typ

Max(3) Unit

VSO(4)

Backup switchover voltage

VBAT -0.80 VBAT -0.50 VBAT -0.30 V

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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