TMS320VC549_16 Datasheet, PDF (12/64 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSOR

TMS320VC549
FIXEDĆPOINT DIGITAL SIGNAL PROCESSOR
SPRS078G − SEPTEMBER 1998 − REVISED OCTOBER 2004
absolute maximum ratings over specified temperature range (unless otherwise noted)^†
Supply voltage I/O range, DV_DD‡ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 4.6 V
Supply voltage core range, CV_DD‡ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 3.75 V
Input voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 4.6 V
Output voltage range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 4.6 V
Operating case temperature range, T_C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to 100°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −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
DVDD
CVDD
Device supply voltage, I/O†
Device supply voltage, core†
MIN NOM
3
3.3
2.4
2.5
MAX
3.6
2.75
UNIT
V
V
VSS
VIH
Supply voltage, GND
High-level input voltage, I/O
Schmitt trigger inputs, DVDD =
3.3"0.3 V‡
2.5
All other inputs
2
0
V
DVDD + 0.3
V
DVDD + 0.3
VIL
Low-level input voltage
−0.3
0.8
V
IOH
High-level output current
−300
µA
IOL
Low-level output current
1.5
mA
TC
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 (and
powered down after), the I/O buffers. For additional power sequencing information, see the Power Supply Sequencing Solutions for Dual Supply
Voltage DSPs application report (literature number SLVA073).
‡ _{On the VC549 devices, the following pins have schmitt trigger inputs: RS, INTn, NMI, X2/CLKIN, CLKMDn, TCK, HAS, HCS, HDSn, BCLKRn,}
TCLKR, BCLKXn, and TCLKX
See Figure 1 for 3.3-V device test load circuit values.
12
• POST OFFICE BOX 1443 HOUSTON, TEXAS 77251−1443