TMS320VC5402 datasheet(34/68 Pages) TI

34 / 68 page

TMS320VC5402

FIXEDPOINT DIGITAL SIGNAL PROCESSOR

SPRS079E – OCTOBER 1998 – REVISED AUGUST 2000

POST OFFICE BOX 1443

• HOUSTON, TEXAS 77251–1443

absolute maximum ratings over specified temperature range (unless otherwise noted)†

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

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

† 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.

‡ All voltage values are with respect to VSS.

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

High level input voltage

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

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

TMS, CLKMDn

2.2

DVDD + 0.3

VIH

High-level input voltage

DVDD = 3.3"0.3 V

X2/CLKIN¶

1.35

CVDD+0.3

DVDD = 3.3"0.3 V

TCK, TRST

2.5

DVDD + 0.3

All other inputs

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

0.6

DVDD = 3.3"0.3 V

All other inputs

–0.3

0.8

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 ’5402 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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