M41T81 查看數據表（PDF） - STMicroelectronics

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M41T81

Serial access real-time clock with alarm

STMicroelectronics 

Maximum ratings

4

Maximum ratings

M41T81

Stressing the device above the rating listed in the absolute maximum ratings table may

cause permanent damage to the device. These are stress ratings only and operation of the

device at these or any other conditions above those indicated in the operating sections of

this specification is not implied. Exposure to absolute maximum rating conditions for

extended periods may affect device reliability.

Table 6. Absolute maximum ratings

Sym

Parameter

Value

TSTG Storage temperature (VCC off, oscillator off)

–55 to 125

VCC Supply voltage

–0.3 to 7

TSLD(1) Lead solder temperature for 10 seconds

260

VIO Input or output voltages

–0.3 to VCC+0.3

IO Output current

20

PD Power dissipation

1

1. Reflow at peak temperature of 260°C. The time above 255 °C must not exceed 30 seconds.

Unit

°C

V

°C

V

mA

W

Caution: Negative undershoots below –0.3 volts are not allowed on any pin while in the battery

backup mode

20/29

Doc ID 7529 Rev 10

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