TS256M~
2GUSD
microSD Memory Card
• Bus Signal Levels
As the bus can be supplied with a variable supply voltage, all signal levels are related to the supply voltage.
To meet the requirements of the JEDEC specification JESD8-1A, the card input and output voltages shall be within the
following specified ranges for any VDD of the allowed voltage range:
Parameter
Output HIGH voltage
Output LOW voltage
Input HIGH voltage
Input LOW voltage
Symbol
VOH
Min.
Max.
Unit
V
Remark
0.75* VDD
IOH = -100 μA @VDD min
IOL = 100 μA @VDD min
VOL
0.125* VDD
VDD + 0.3
0.25* VDD
V
VIH
0.625* VDD
V
VIL
VSS – 0.3
V
4
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