CLIENT ST Microelectronics, Inc., CLIENT Datasheet - Page 32

• Manufacturer Part Number: CLIENT
• Description: STPC Client Datasheet / PC Compatible Embeded Microprocessor
• Manufacturer: ST Microelectronics, Inc.

ELECTRICAL SPECIFICATIONS
4. ELECTRICAL SPECIFICATIONS
4.1 INTRODUCTION
The electrical specifications in this chapter are val-
id for the STPC Client.
4.2 ELECTRICAL CONNECTIONS
4.2.1 POWER/GROUND CONNECTIONS/
DECOUPLING
Due to the high frequency of operation of the
STPC Client, it is necessary to install and test this
device using standard high frequency techniques.
The high clock frequencies used in the STPC Cli-
ent and its output buffer circuits can cause tran-
sient 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
All inputs not used by the designer and not listed
in the table of pin connections in Chapter 3 should
be connected either to VDD or to VSS. Connect
active-high inputs to VDD through a 20 k
pull-down resistor and active-low inputs to VSS
and connect active-low inputs to VCC through a
Table 4-1. Absolute Maximum Ratings
Note 1 : -40
range) is given a s a preliminary specification and so as
all the -40°C related data.
32/61
Symbol
T
V
V
V
P
V
CASE
I
, V
ESD
DDx
TOT
5T
O
°C limit of T
DC Supply Voltage
Digital Input and Output Voltage
5Volt Tolerance
ESD Capacity (Human body mode)
Operating Case Temperature (Note 1)
Total Power Dissipation
CASE
Parameter
(extended temperature
Issue 2.2 - October 13, 2000
(±10%)
20 k
operation.
4.2.3 RESERVED DESIGNATED PINS
Pins designated reserved should be left discon-
nected. Connecting a reserved pin to a pull-up re-
sistor, 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 Client device. Stresses be-
yond those listed under
cause permanent damage to the device. These
are stress ratings only and do not imply that oper-
ation under any conditions other than those spec-
ified in section "Operating Conditions".
Exposure to conditions beyond
reduce device reliability and (2) result in prema-
ture failure even when there is no immediately ap-
parent sign of failure. Prolonged exposure to con-
ditions at or near the absolute maximum ratings
(Table
and reliability.
Minimum
(±10%) pull-up resistor to prevent spurious
4-1) may also result in reduced useful life
1500
-0.3
-0.3
-40
2.5
-
Maximum
VDD + 0.3
Table 4-1
+115
4.0
5.5
4.8
V
Table 4-1
limits may
may (1)
Units
°C
W
V
V
V