Motorola MCF5281 用户手册

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页码 816
33-4
MCF5282 User’s Manual
MOTOROLA
 
DC Electrical Specifications  
33.3  DC Electrical Specifications
 
(2)
Solving equations 1 and 2 for K gives:
K = P
 
× (T
+ 273 × C) + Q
JMA 
 × P
D
 2
 
(3)
where K is a constant pertaining to the particular part. K can be determined from equation
(3) by measuring P
D
 (at equilibrium) for a known T
A
. Using this value of K, the values
of P
D
 and T
J
 can be obtained by solving equations (1) and (2) iteratively for any value of
T
A
.
Table 33-3. DC Electrical Specifications
1
(V
SS 
= V
SSPLL
= V
SSF 
= V
SSA
= 0 V
DC
)
Characteristic
Symbol
Min
Max
Unit
Input High Voltage
V
IH
0.7 x V
DD
5.25
V
Input Low Voltage
V
IL
V
SS
 
– 0.3 0.35 x V
DD
V
Input Hysteresis
V
HYS
0.06 x 
V
DD
mV
Input Leakage Current
V
in
 = V
DD
 or V
SS
, Input-only pins
I
in
-1.0
1.0
µA
High Impedance (Off-State) Leakage Current
V
in
 
= V
DD
 or V
SS
, All input/output and output pins 
I
OZ
-1.0
1.0
µA
Output High Voltage (All input/output and all output pins)
I
OH
 
= –2.0 mA
V
OH
V
DD 
- 0.5
__
V
Output Low Voltage (All input/output and all output pins)
I
OL
 
= 2.0mA
V
OL
__
0.5
V
Weak Internal Pull Up Device Current, tested at V
IL
 Max.
I
APU
-10
-130
µA
Input Capacitance 
2
All input-only pins
All input/output (three-state) pins
C
in

7
7
pF
Load Capacitance
3
(50% Partial Drive)
(100% Full Drive)
C
L
25
50
pF
Supply Voltage (includes core modules and pads)
V
DD
2.7
3.6
V
RAM Memory Standby Supply Voltage
   Normal Operation: V
DD 
> V
STBY 
- 0.3 V
   Standby Mode: V
DD 
<
 
V
STBY 
- 0.3 V
 
V
STBY
0.0
1.8
3.6
3.6
V
 Flash Memory Supply Voltage
V
DDF
2.7
3.6
V
P
D
K
T
J
273
°C
+
(
)
÷
=