TMS320VC5401 datasheet(46/81 Pages) TI

46 / 81 page

Electrical Specifications

December 2000 − Revised February 2004

SPRS153C

Electrical Specifications

This section provides the absolute maximum ratings and the recommended operating conditions for the

TMS320VC5401 DSP.

5.1

Absolute Maximum Ratings

The list of absolute maximum ratings are specified over operating case temperature. 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 Section 5.2 is not implied. Exposure to absolute-maximum-rated conditions for extended periods may

affect device reliability. All supply voltage values (core and I/O) are with respect to VSS. Figure 5−1 provides

the test load circuit values for a 3.3-V device.

Supply voltage I/O range, DVDD

−0.3 V to 4.0 V

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

Supply voltage core range, CVDD

−0.3 V to 2.4 V

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

Input voltage range, VI

−0.3 V to 4.5 V

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

Output voltage range, VO

−0.3 V to 4.5 V

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

Operating case temperature range, TC

−40°C to 100°C

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

Storage temperature range, Tstg

−55°C to 150°C

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

5.2

Recommended Operating Conditions

MIN

NOM

MAX

UNIT

DVDD

Device supply voltage, I/O†

3.3

3.6

CVDD

Device supply voltage, core†

1.71

1.8

1.98

VSS

Supply voltage, GND

Hi h l

l i

lta

RS, INTn, NMI, BIO, BCLKR0, BCLKR1,

BCLKX0, BCLKX1, HCS, HDS1, HDS2, TDI,

TMS, CLKMDn

2.3

DVDD + 0.3

VIH

High-level input voltage

DVDD = 3.3" 0.3 V

X2/CLKIN‡

1.45

CVDD+0.3

DVDD = 3.3" 0.3 V

TCK, TRST

2.6

DVDD + 0.3

All other inputs

2.1

DVDD + 0.3

VIL

Low-level input voltage

DVDD = 3.3" 0.3 V

RS, INTn, NMI, X2/CLKIN, BIO, BCLKR0,

BCLKR1, BCLKX0, BCLKX1, HCS, HDS1,

HDS2, TCK, CLKMDn

−0.3

0.5

DVDD = 3.3" 0.3 V

All other inputs

−0.3

0.7

IOH

High-level output current

300

µA

IOL

Low-level output current

1.5

Operating case temperature

−40

100

°C

† Texas Instrument DSPs do not require specific power sequencing between the core supply and the I/O supply. However, systems should be

designed to ensure that neither supply is powered up for extended periods of time if the other supply is below the proper operating voltage. Excessive

exposure to these conditions can adversely affect the long term reliability of the devices. System-level concerns such as bus contention may require

supply sequencing to be implemented. In this case, the core supply should be powered up at the same time as or prior to the I/O buffers and then

powered down after the I/O buffers.

‡ All revisions of the 5401 can be operated with an external clock source, provided that the proper voltage levels be driven on the X2/CLKIN pin. It

should be noted that the X2/CLKIN pin is referenced to the device 1.8V power supply (CVDD), rather than the 3V I/O supply (DVDD). Refer to the

recommended operating conditions section of this document for the allowable voltage levels of the X2/CLKIN pin.

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