Transcend Information TS4/8GUSDHC6-P3 Bus Signal Levels, Parameter Symbol Min Max Unit Remark

Page 5

TS4/8GUSDHC6-P3	4/8GB microSDHC Class 6 Card + Reader P3

•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 and JESD8-7, the card input and output voltages shall be within the following specified ranges for any VDD of the allowed voltage range:

Parameter	Symbol	Min.	Max.	Unit	Remark
Output HIGH voltage	VOH	0.75* VDD		V	IOH = -100 μA @VDD min
Output LOW voltage	VOL		0.125* VDD	V	IOL = -100 μA @VDD min
Input HIGH voltage	VIH	0.625* VDD	VDD + 0.3	V
Input LOW voltage	VIL	VSS – 0.3	0.25* VDD	V

Transcend Information Inc.

5

Image 5

Contents Placement Description Features8GB microSDHC Class 6 Card + Reader P3 Pin DefinitionArchitecture Bus Signal Line Load Power Supply VoltageBus Operating Conditions General Current ConsumptionSingle card capacitance Parameter Symbol Min Max Unit Remark Bus Signal LevelsBus Timing Output Delay time during Data Transfer Mode Bus Timing High Speed Mode Output Hold time Reliability and Durability OCR register Register InformationOID MIDPNM PRVCRC PSNMDT CSD Register Fields CSD Version CsdstructureTranspeed TaacNsac Readbllen CCCReadblpartial WriteblkmisalignCsize WpgrpenableEraseblken SectorsizePermwriteprotect CopyTmpwriteprotect FileformatRCA Register Datastataftererase ScrstructureSdspec Sdbuswidths SdsecurityMechanical Description Top View Mechanical Description Bottom View Mechanical Description Keep Out Area MicroSD package Dimensions System Requirements Placement DimensionsDescription USB Pin Identification Block DiagramUSB Pinouts DC Electrical Characteristics of 3.3V I/O DC CharacteristicsRecommended Operating Conditions Parameter MIN