STPCCONSUMER-II datasheet(33/93 Pages) STMICROELECTRONICS

33 / 93 page

ELECTRICAL SPECIFICATIONS

Release 1.5 - January 29, 2002

33/93

4. ELECTRICAL SPECIFICATIONS

4.1. INTRODUCTION

The electrical specifications in this chapter are

valid for the STPC Consumer-II.

4.2. ELECTRICAL CONNECTIONS

4.2.1.

POWER/GROUND

CONNECTIONS/

DECOUPLING

Due to the high frequency of operation of the

STPC Consumer-II, it is necessary to install and

test this device using standard high frequency

techniques. The high clock frequencies used in

the STPC Consumer-II and its output buffer

circuits can cause transient power surges when

several

output

buffers

switch

output

levels

simultaneously. These effects can be minimized

by filtering the DC power leads with low-

inductance decoupling capacitors, using

low

impedance wiring, and by utilizing all of the VSS

and VDD pins.

4.2.2. UNUSED INPUT PINS

No unused input pin should be left unconnected

unless they have an integrated pull-up or pull-

down. Connect active-low inputs to VDD through a

20 k

Ω (±10%) pull-up resistor and active-high

inputs to VSS. For bi-directionnal active-high

inputs, connect to VSS through a 20 k

Ω (±10%)

pull-up resistor to prevent spurious operation.

4.2.3. RESERVED DESIGNATED PINS

Pins designated as reserved should be left dis-

connected. Connecting a reserved pin to a pull-up

resistor, pull-down resistor, or an active signal

could cause unexpected results and possible

circuit malfunctions.

4.3. ABSOLUTE MAXIMUM RATINGS

The following table lists the absolute maximum

ratings

for

the

STPC

Consumer-II

device.

Stresses beyond those listed under Table 4-1

limits may cause permanent damage to the

device. These are stress ratings only and do not

imply that operation under any conditions other

than

those

specified

section

"Operating

Conditions".

Exposure to conditions beyond those outlined in

Table 4-1 may (1) reduce device reliability and (2)

result in premature failure even when there is no

immediately apparent sign of failure. Prolonged

exposure to conditions at or near the absolute

maximum ratings (Table 4-1) may also result in

reduced useful life and reliability.

4.3.1. 5V TOLERANCE

The STPC is capable of running with I/O systems

that operate at 5 V such as PCI and ISA devices.

Certain pins of the STPC tolerate inputs up to

5.5 V. Above this limit the component is likely to

sustain permanent damage. .

Note 1: The figures specified apply to the Tcase of a

STPC device that is soldered to a board, as detailed in

the Design Guidelines Section, for Commercial and In-

dustrial temperature ranges.

Table 4-1. Absolute Maximum Ratings

Symbol

Parameter

Minimum

Maximum

Units

VDDx

DC Supply Voltage

-0.3

4.0

VCORE

DC Supply Voltage for Core

-0.3

2.7

VI, VO

Digital Input and Output Voltage

-0.3

VDD + 0.3

V5T

5Volt Tolerance

-0.3

5.5

VESD

ESD Capacity (Human body mode)

2000

°C

TSTG

Storage Temperature

-40

+150

TOPER

Operating Temperature (Note 1)

+85

°C

-40

+115

°C

PTOT

Maximum Power Dissipation (package)

4.8

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