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I.MX27 Datasheet, PDF (81/148 Pages) Freescale Semiconductor, Inc – Multimedia Applications Processor | |||
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Electrical Characteristics
Table 43. SDHC Electrical DC Characteristics
ID
Parameter
Min
Max
Unit
Comments
SD13 Supply Voltage (low voltage)
1.65
1.95
V 1.95 ~2.7 V is not supported.
SD14 Supply Voltage (high voltage)
2.7
3.6
V
SD15 Power Up Time
â
250
ms
â
SD16 Supply Current
100
â
mA
â
Bus Signal Line Load
SD17 Pull-up Resistance
10
100
kΩ
Internal PU
SD18 Open Drain Resistance
NA
NA
kΩ
For MMC cards only
Open Drain Signal Level
â
SD19 Output High Voltage
SD20 Output Low Voltage
VDD â 0.2
â
V
â
0.3
V
Push-Pull Signal Levels (High Voltage)
IOH=-100 mA
IOL= 2 mA
SD21 Output HIGH Voltage
0.75 x VDD
â
V
SD22 Output LOW Voltage
â
0.125 x VDD V
SD23 Input HIGH Voltage
0.625 x VDD VDD + 0.3
V
SD24 Input LOW Voltage
VSS â 0.3 0.25 x VDD
V
Push-Pull Signal Levels (Low Voltage)
IOH=-100 mA @VDD min
IOL=100 mA @VDD min
â
â
SD25 Output HIGH Voltage
SD26 Output LOW Voltage
SD27 Input HIGH Voltage
SD28 Input LOW Voltage
VDD â 0.2
â
V
â
0.2
V
0.7 x VDD VDD + 0.3
V
VSS â 0.3 0.3 x VDD
V
IOH=-100 mA @VDD min
IOL=100 mA @VDD min
â
â
i.MX27 and i.MX27L Data Sheet, Rev. 1.5
Freescale Semiconductor
81
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