MC56F8367EVME Freescale Semiconductor, MC56F8367EVME Datasheet - Page 165
MC56F8367EVME
Manufacturer Part Number
MC56F8367EVME
Description
EVAL BOARD FOR MC56F83X
Manufacturer
Freescale Semiconductor
Type
DSPr
Specifications of MC56F8367EVME
Contents
Module and Misc Hardware
Processor To Be Evaluated
MC56F8145-67 and MC56F8345-67
Data Bus Width
16 bit
Interface Type
RS-232
Silicon Manufacturer
Freescale
Core Architecture
56800/E
Core Sub-architecture
56800/E
Silicon Core Number
MC56F
Silicon Family Name
MC56F83xx
Rohs Compliant
Yes
For Use With/related Products
MC56F83x5, MC56F83x6, MC56F83x7
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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C, the internal [dynamic component], is classic C*V
56800E core and standard cell logic.
D, the external [dynamic component], reflects power dissipated on-chip as a result of capacitive loading
on the external pins of the chip. This is also commonly described as C*V
of the IO cell types used on the device reveal that the power-versus-load curve does have a non-zero
Y-intercept.
Power due to capacitive loading on output pins is (first order) a function of the capacitive load and
frequency at which the outputs change.
in the IO cells as a function of capacitive load. In these cases:
TotalPower = Σ((Intercept +Slope*Cload)*frequency/10MHz)
where:
Because of the low duty cycle on most device pins, power dissipation due to capacitive loads was found
to be fairly low when averaged over a period of time. The one possible exception to this is if the chip is
using the external address and data buses at a rate approaching the maximum system rate. In this case,
power from these buses can be significant.
E, the external [static component], reflects the effects of placing resistive loads on the outputs of the
device. Sum the total of all V
0.5 for the purposes of these rough calculations. For instance, if there is a total of 8 PWM outputs driving
10mA into LEDs, then P = 8*.5*.01 = 40mW.
In previous discussions, power consumption due to parasitics associated with pure input pins is ignored,
as it is assumed to be negligible.
Freescale Semiconductor
Preliminary
•
•
•
Summation is performed over all output pins with capacitive loads
TotalPower is expressed in mW
Cload is expressed in pF
Table 10-25 I/O Loading Coefficients at 10MHz
PDU08DGZ_ME
PDU04DGZ_ME
2
/R or IV to arrive at the resistive load contribution to power. Assume V =
56F8367 Technical Data, Rev. 8
Table 10-20
provides coefficients for calculating power dissipated
2
Intercept
1.15mW
*F CMOS power dissipation corresponding to the
1.3
0.11mW / pF
0.11mW / pF
Slope
2
*F, although simulations on two
Power Consumption
165
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