M48T129V(2005) 查看數據表（PDF） - STMicroelectronics

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M48T129V
(Rev.:2005)

5.0 or 3.3V, 1 Mbit (128 Kbit x 8) TIMEKEEPER® SRAM

STMicroelectronics 

M48T129Y, M48T129V

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 indicat-

ed in the Operating sections of this specification is

not implied. Exposure to Absolute Maximum Rat-

ing conditions for extended periods may affect de-

vice reliability. Refer also to the

STMicroelectronics SURE Program and other rel-

evant quality documents.

Table 7. Absolute Maximum Ratings

Symbol

Parameter

Value

Unit

TA

Ambient Operating Temperature

0 to 70

°C

TSTG

Storage Temperature (VCC Off, Oscillator Off)

–40 to 85

°C

TSLD(1,2,3) Lead Solder Temperature for 10 seconds

260

°C

VIO

Input or Output Voltages

–0.3 to VCC +0.3

V

VCC

Supply Voltage

M48T129Y

–0.3 to 7.0

V

M48T129V

–0.3 to 4.6

V

IO

Output Current

20

mA

PD

Power Dissipation

1

W

Note: 1. For DIP package: Soldering temperature not to exceed 260°C for 10 seconds (total thermal budget not to exceed 150°C for longer

than 30 seconds). No preheat above 150°C, or direct exposure to IR reflow (or IR preheat) allowed, to avoid damaging the Lithium

battery.

2. For SO package, standard (SnPb) lead finish: Reflow at peak temperature of 225°C (total thermal budget not to exceed 180°C for

between 90 to 150 seconds).

3. For SO 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).

CAUTION: Negative undershoots below –0.3V are not allowed on any pin while in the Battery Back-up mode.

CAUTION: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets.

20/30

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