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MNSC140CORE Datasheet(PDF) 77 Page - Freescale Semiconductor, Inc

Part # MNSC140CORE
Description  Quad Core 16-Bit Digital Signal Processor
PDF  80 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MNSC140CORE Datasheet(HTML) 77 Page - Freescale Semiconductor, Inc

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Power Considerations
MSC8102 Quad Core Digital Signal Processor, Rev. 12
Freescale Semiconductor
4-5
4.4 Power Considerations
The internal power dissipation consists of three components:
PINT = PTCORE + PSIU + PBUSES + PPERIPH
The power dissipation depends on the operating frequency of the different portions of the chip. To determine the
power dissipation at a given frequency, the following equations should be applied:
PCORE (fc) = ((PCORE – PLCO)/275) × fc + PLCO
PTCORE (fc) = (PCORE × 4)
PSIU (fc) = ((PSIU – PLSI)/91.67) × fc + PLSI
PPERIPH (fc) = ((PPERIPH – PLPE)/91.67) × fc + PLPE
PBUSES (fc) = PBUSES /91.67 × fc
Where,
fc is the operating frequency in MHz and all power numbers are in mW
PLCO is the SC140 Core leakage power
PLSI is the SIU leakage power
PLPE is the peripheral leakage power
To determine a total power dissipation in a specific application, the following equation should be applied for each
I/O output pin:
P = C
× VDDH2 × fs × 10–3
Equation 1
Where:
P = power in mW
C = load capacitance in pF
fs = output switching frequency in MHz.



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