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IMX53CEC Datasheet(PDF) 37 Page - Freescale Semiconductor, Inc

Part # IMX53CEC
Description  Applications Processors for Consumer Products
PDF  204 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

IMX53CEC Datasheet(HTML) 37 Page - Freescale Semiconductor, Inc

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Electrical Characteristics
i.MX53xD Applications Processors for Consumer Products, Rev. 2
Freescale Semiconductor
37
4.4.1
GPIO Output Buffer Impedance
Table 18 shows the GPIO output buffer impedance.
4.4.2
DDR Output Driver Average Impedance
The DDR2/LVDDR2 interface fully complies with JESD79-2E DDR2 JEDEC standard release April,
2008. The DDR3 interface fully complies with JESD79-3D DDR3 JEDEC standard release April, 2008.
Table 18. GPIO Output Buffer Impedance
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
OVDD 2.775 V
OVDD 1.875 V
Output Driver
Impedance
Rpu
Low Drive Strength, Ztl = 150
Ω
Medium Drive Strength, Ztl = 75
Ω
High Drive Strength, Ztl = 50
Ω
Max Drive Strength, Ztl = 37.5
Ω
80
40
27
20
104
52
35
26
150
75
51
38
250
125
83
62
Ω
Output Driver
Impedance
Rpd
Low Drive Strength, Ztl = 150
Ω
Medium Drive Strength, Ztl = 75
Ω
High Drive Strength, Ztl = 50
Ω
Max Drive Strength, Ztl = 37.5
Ω
64
32
21
16
88
44
30
22
134
66
44
34
243
122
81
61
Ω



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