M41T81M6F(2006) 查看數據表（PDF） - STMicroelectronics

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M41T81M6F
(Rev.:2006)

Serial access Real-Time Clock with alarm

STMicroelectronics 

M41T81

4

Maximum rating

Maximum rating

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. Refer also to the STMicroelectronics SURE

Program and other relevant quality documents.

Caution:

Table 6.

Sym

Absolute maximum ratings

Parameter

Value

Unit

TSTG

Storage temperature (VCC off,

oscillator off)

SOIC

–55 to 125

°C

VCC Supply voltage

–0.3 to 7

V

Lead-free lead finish(1)

260

°C

TSLD

Lead solder temperature for 10

seconds

Standard (SnPb)

lead finish(2)

240

°C

VIO Input or output voltages

–0.3 to Vcc+0.3 V

IO Output current

20

mA

PD Power dissipation

1

W

1. For SO8 package, lead-free (Pb-free) lead finish: Reflow at peak temperature of 260°C (total thermal budget not to exceed 245°C for greater

than 30 seconds).

2. For SO8 package, standard (SnPb) lead finish: Reflow at peak temperature of 240°C (total thermal budget not to exceed 180°C for between

90 to 150 seconds).

Negative undershoots below –0.3 volts are not allowed on any pin while in the Battery Back-

up Mode

21/30

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