M5373EVB Freescale Semiconductor, M5373EVB Datasheet - Page 5

• Manufacturer Part Number: M5373EVB
• Description: KIT EVAL FOR MCF537X
• Manufacturer: Freescale Semiconductor
• Series: ColdFire®r
• Type: MPUr

Specifications of M5373EVB

• Contents: Module and Misc Hardware
• For Use With/related Products: MCF537x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3
3.1
To further enhance noise isolation, an external filter is strongly recommended for PLL analog V
Figure 2
close to the dedicated PLLV
3.2
To minimize noise, external filters are required for each of the USB power pins. The filter shown in
connected between the board EV
close to the dedicated USBV
3.3
The relationship between SDV
3.3V) and EV
3.3.1
If EV
the EV
must powered up. IV
Freescale Semiconductor
DD
DD
/SDV
should be connected between the board V
/SDV
Hardware Design Considerations
PLL Power Filtering
USB Power Filtering
Supply Voltage Sequencing and Separation Cautions
DD
DD
Power Up Sequence
DD
are specified relative to IV
are powered up with IV
In addition to the above filter circuitry, a 0.01 F capacitor is also recommended in parallel
with those shown.
to be in a high impedance state. There is no limit on how long after EV
DD
should not lead the EV
Board IV
DD
Board EV
DD
DD
pin as possible.
pin as possible.
DD
MCF537x ColdFire
and EV
DD
or IV
DD
Figure 2. System PLL V
DD
DD
DD
10 Ω
DD
at 0 V, the sense circuits in the I/O pads cause all pad output drivers connected to
Figure 3. USB V
and each of the USBV
is non-critical during power-up and power-down sequences. SDV
.
DD
0 Ω
, SDV
DD
®
and the PLLV
Microprocessor Data Sheet, Rev. 4
10 µF
DD
NOTE
10 µF
, or PLLV
GND
GND
DD
Power Filter
DD
DD
DD
DD
pins. The resistor and capacitors should be placed as
Power Filter
pins. The resistor and capacitors should be placed as
by more than 0.4 V during power ramp-up or there is
0.1 µF
0.1 µF
PLL V
USB V
DD
Hardware Design Considerations
DD
/SDV
DD
Pin
DD
DD
pins. The filter shown in
Pin
Figure 3
powers up before IV
should be
DD
(2.5V or
DD
5