M48T02-70PC1 查看數據表（PDF） - STMicroelectronics

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M48T02-70PC1

5.0V, 16 Kbit (2Kb x 8) TIMEKEEPER® SRAM

STMicroelectronics 

M48T02, M48T12

Figure 4. Block Diagram

32,768 Hz

CRYSTAL

LITHIUM

CELL

OSCILLATOR AND

CLOCK CHAIN

8 x 8 BiPORT

SRAM ARRAY

POWER

VOLTAGE SENSE

AND

SWITCHING

CIRCUITRY

VPFD

BOK

2040 x 8

SRAM ARRAY

A0-A10

DQ0-DQ7

E

W

G

VCC

VSS

AI01329

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 2. 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(2)

Lead Solder Temperature for 10 seconds

260

°C

VIO

Input or Output Voltages

–0.3 to 7

V

VCC

Supply Voltage

–0.3 to 7

V

IO

Output Current

20

mA

PD

Power Dissipation

1

W

Note: 1. Soldering temperature not to exceed 260°C for 10 seconds (total thermal budget not to exceed 150°C for longer than 30 seconds).

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

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