MCF5485 FREESCALE [Freescale Semiconductor, Inc], MCF5485 Datasheet - Page 6
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MCF5485
Manufacturer Part Number
MCF5485
Description
Integrated Microprocessor Electrical Characteristics
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MCF5485.pdf
(30 pages)
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Hardware Design Considerations
4
4.1
To further enhance noise isolation, an external filter is strongly recommended for PLL analog V
Figure 2
close to the dedicated PLL V
4.2
Figure 3
(IV
6
1
2
3
Input low voltage SSTL 3.3V/2.5V
Input high voltage 3.3V I/O pins
Input low voltage 3.3V I/O pins
Output high voltage I
Output low voltage I
Capacitance
DD
IV
example circuit. There are three PLL V
This specification is guaranteed by design and is not 100% tested.
Capacitance C
).
DD
should be connected between the board V
shows situations in sequencing the I/O V
and PLL V
Hardware Design Considerations
PLL Power Filtering
Supply Voltage Sequencing and Separation Cautions
3
, V
in
IN
DD
= 0 V, f = 1 MHz
is periodically sampled rather than 100% tested.
OL
OH
should be at the same voltage. PLL V
Characteristic
= 8 mA, 16 mA,24 mA
MCF5485 Integrated Microprocessor Electrical Characteristics, Rev. 3
= 8 mA, 16 mA,24 mA
Board V
DD
pin as possible.
Table 4. DC Electrical Specifications (continued)
DD
2
Figure 2. System PLL V
DD
10 W
inputs. A filter circuit should used on each PLL V
5
DD
DD
(EV
and the PLL V
10 µF
DD
GND
), SDRAM V
DD
should have a filtered input. Please see
Symbol
V
DD
V
C
V
V
V
DD
OH
OL
IH
IN
IL
IL
Power Filter
pins. The resistor and capacitors should be placed as
DD
0.1 µF
(SD V
0.7 × EV
V
V
DD
SS
SS
Min
), PLL V
2.4
PLL V
—
—
− 0.3
− 0.3
DD
DD
DD
DD
Pin
DD
input.
(PLL V
0.35 × EV
pins. The filter shown in
EV
V
Freescale Semiconductor
REF
DD
Max
TBD
0.5
Figure 2
—
− 0.3
+ 0.3
DD
DD
), and Core V
for an
Units
pF
V
V
V
V
V
DD