miniSDHC Card series

4GB High Capacity miniSD Card

Bus Operating Conditions

General

Parameter

Symbol

Min.

Max.

Unit

Peak voltage on all lines

 

-0.3

VDD+0.3

V

All Inputs

 

 

 

 

Remark

Input Leakage Current

 

-10

10

µA

All Outputs

 

 

 

 

Output Leakage Current

-10

10

µA

Power Supply Voltage

Parameter

Symbol

Min.

Max.

Unit

Supply voltage

VDD

2.7

3.6

V

Output High Voltage

VOH

0.75* VDD

 

V

Output Low Voltage

VOL

 

0.125* VDD

V

Input High Voltage

VIH

0.625* VDD

VDD+0.3

V

Input Low Voltage

VIL

VSS-0.3

0.25* VDD

V

Power up time

 

 

250

ms

Remark

IOH=-100uA@VDDMin. IOL=100uA@VDD Min.

From 0v to VDD Min.

Current Consumption

The current consumption is measured by averaging over 1 second.

Before first command: Maximum 15 mA

During initialization: Maximum 100 mA

Operation in Default Mode: Maximum 100 mA

Operation in High Speed Mode: Maximum 200 mA

Operation with other functions: Maximum 500 mA.

Bus Signal Line Load

The total capacitance CL the CLK line of the SD Memory Card bus is the sum of the bus master capacitance CHOST, the bus capacitance CBUS itself and the capacitance CCARD of each card connected to this line:

CL = CHOST + CBUS + Ν*CCARD

Where N is the number of connected cards.

Parameter

Symbol

Min.

Max.

Unit

Pull-up resistance

RCMD

10

100

kΩ

 

RDAT

 

 

 

Bus signal line capacitance

CL

 

40

pF

 

 

 

 

 

Remark

To prevent bus floating

1 card

CHOST+CBUS shall not exceed 30 pF

Transcend Information Inc.

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Transcend Information miniSDHC Card Series manual Power Supply Voltage, Current Consumption, Bus Signal Line Load