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Transcend Information Secure Digital Card TS2GSD133 User Manual

Page 4

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T

T

T

S

S

S

2

2

2

G

G

G

S

S

S

D

D

D

1

1

1

3

3

3

3

3

3

Secure Digital Card


Transcend Information Inc.

4

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 V

DD

of the allowed voltage range:

Parameter

Symbol

Min.

Max.

Unit

Remark

Output HIGH voltage

V

OH

0.75* V

DD

V

I

OH

= -100 μA @V

DD

min

Output LOW voltage

V

OL

0.125* V

DD

V I

OL

= -100 μA @V

DD

min

Input HIGH voltage

V

IH

0.625* V

DD

V

DD

+ 0.3

V

Input LOW voltage

V

IL

V

SS

– 0.3

0.25* V

DD

V