DSP56002FC66 Freescale Semiconductor, DSP56002FC66 Datasheet - Page 104
![](/photos/31/36/313697/132pin_pqfp_sml.jpg)
DSP56002FC66
Manufacturer Part Number
DSP56002FC66
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.DSP56002FC66.pdf
(110 pages)
Specifications of DSP56002FC66
Device Core Size
24b
Architecture
Harvard
Format
Fixed Point
Clock Freq (max)
66MHz
Mips
33
Device Input Clock Speed
66MHz
Ram Size
3KB
Program Memory Size
1.5KB
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
5.5V
Operating Temp Range
-40C to 105C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
132
Package Type
PQFP
Lead Free Status / Rohs Status
Supplier Unconfirmed
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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Design Considerations
Power Consumption
POWER CONSUMPTION
4-4
Equation 3:
Equation 4:
Power dissipation is a key issue in portable DSP applications. The following describes
some factors which affect current consumption. Current consumption is described by
the formula:
where:
For example, for an address pin loaded with a 50 pF capacitance and operating at 5.5
V with a 40 MHz clock, toggling at its maximum possible rate (which is 10 MHz), the
current consumption is:
The maximum internal current value (I
when running the code given below. This represents “typical” internal activity, and is
included as a point of reference. Some applications may consume more or less current
depending on the code used. The typical internal current value (I
what is typically seen when running the given code.
The following steps are recommended for applications requiring very low current
consumption:
1. Minimize external memory accesses; use internal memory accesses instead.
2. Minimize the number of pins that are switching.
3. Minimize the capacitive load on the pins.
4. Connect the unused inputs to pull-up or pull-down resistors.
C = node/pin capacitance
V = voltage swing
f = frequency of node/pin toggle
I
I
=
=
C V f
50 10
Freescale Semiconductor, Inc.
For More Information On This Product,
–
12
5.5 10 10
DSP56002/D, Rev. 3
Go to: www.freescale.com
6
=
2.75mA
CCI
-max), reflects the maximum I
CCI
-typ) reflects
MOTOROLA
CC
expected