m41t81s STMicroelectronics, m41t81s Datasheet - Page 22

• Manufacturer Part Number: m41t81s
• Description: Serial Access Real-time Clock With Alarms
• Manufacturer: STMicroelectronics

4
Note:
Caution:
22/31
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.
Table 6.
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).
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).
The SOX18 package has Lead-free (Pb-free) lead finish, but cannot be exposed to peak
reflow temperature in excess of 240°C (use same reflow profile as standard (SnPb) lead
finish).
Negative undershoots below –0.3 volts are not allowed on any pin while in the Battery Back-
up Mode
T
Sym
T
V
V
P
STG
SLD
I
CC
O
IO
D
Absolute maximum ratings
Lead Solder Temperature for 10
Storage Temperature (V
Oscillator Off)
Seconds
Input or Output Voltages
Power Dissipation
Supply Voltage
Output Current
Parameter
CC
Off,
Standard (SnPb)
Lead-free lead
lead finish
finish
SOIC
(1)
(2,3)
–0.3 to Vcc+0.3
–55 to 125
–0.3 to 7
Value
260
240
20
1
Unit
mA
°C
°C
°C
W
V
V