TMS320DM641 datasheet(82/171 Pages) TI

82 / 171 page

Device Operating Conditions

June 2003 − Revised August 2004

SPRS222C

Device Operating Conditions

3.1

Absolute Maximum Ratings Over Operating Case Temperature Range (Unless Otherwise

Noted)†

Supply voltage ranges:

CVDD (see Note 1)

− 0.3 V to 1.8 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DVDD (see Note 1)

−0.3 V to 4 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage ranges:

−0.3 V to 4 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage ranges:

−0.3 V to 4 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating case temperature ranges, TC: (default)

_C to 90_C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

−65

_C to 150_C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTE 1: All voltage values are with respect to VSS.

3.2

Recommended Operating Conditions

MIN

NOM

MAX

UNIT

CVDD

Supply voltage, Core (-400 and -500 devices)‡

1.14

1.2

1.26

CVDD

Supply voltage, Core (-600 device)‡

1.36

1.4

1.44

DVDD

Supply voltage, I/O

3.14

3.3

3.46

VSS

Supply ground

VIH

High-level input voltage

VIL

Low-level input voltage

0.8

VOS

Maximum voltage during overshoot/undershoot

−1.0§

4.3§

Operating case temperature

‡ Future variants of the C64x DSPs may operate at voltages ranging from 0.9 V to 1.4 V to provide a range of system power/performance options.

TI highly recommends that users design-in a supply that can handle multiple voltages within this range (i.e., 1.2 V, 1.25 V, 1.3 V, 1.35 V, 1.4 V

with

± 3% tolerances) by implementing simple board changes such as reference resistor values or input pin configuration modifications. Examples

of such supplies include the PT4660, PT5500, PT5520, PT6440, and PT6930 series from Power Trends, a subsidiary of Texas Instruments. Not

incorporating a flexible supply may limit the system’s ability to easily adapt to future versions of C64x devices.

§ The absolute maximum ratings should not be exceeded for more than 30% of the cycle period.

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