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IMX53IEC Datasheet(PDF) 22 Page - Freescale Semiconductor, Inc

Part # IMX53IEC
Description  i.MX53 Applications Processors for Industrial Products
PDF  173 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

IMX53IEC Datasheet(HTML) 22 Page - Freescale Semiconductor, Inc

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i.MX53 Applications Processors for Industrial Products, Rev. 6
22
Freescale Semiconductor
Electrical Characteristics
NVCC_SD1
Use maximal I/O Eq3, N=6
NVCC_SD2
Use maximal I/O Eq3, N=6
1 The results are based on calculation assuming the following conditions:
—Four 16-bit DDR devices
—Heavy use profile
—On-Die Termination (ODT) of 50
Ω for DDR2 and 40 Ω for DDR3
—Dual rank termination schema
—Command and Address line termination to NVCC_EMI_DRAM/2 voltage
These numbers include both i.MX53 DDR controller I/O current consumption and DDR memory I/O power
consumption for data and DQS lines.
2 50 μA current is the worst case for fast silicon at 125 °C. The typical current is 3 μA for typical silicon at 25 °C.
3 General Equation for estimated, maximal power consumption of an I/O power supply:
Imax = N x C x V x (0.5 x F)
Where:
N - Number of I/O pins supplies by the power line
C - Equivalent external capacitive load
V - I/O voltage
(0.5 x F) - Data change rate. Up to 0.5 of the clock rate (F).
Table 8. Maximal Supply Currents (continued)
Power Line
Conditions
Max Current
Unit



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