T

T

S

5

1

2

M

~

2

G

S

D

C

C

Secure Digital Card

Transcend Information Inc.

3

Bus Operating Conditions

• General

Parameter

Symbol

Min.

Max.

Unit

Remark

Peak voltage on all lines

-0.3

VDD+0.3

V

All Inputs

Input Leakage Current

-10

10

µA

All Outputs

Output Leakage Current

-10

10

µA

• Power Supply Voltage

Parameter

Symbol

Min.

Max.

Unit

Remark

Supply voltage

2.0

3.6

V

CMD0, 15,55,ACMD41

commands

Supply voltage specified in OCR register

2.7

3.6

V

Except CMD0, 15,55,

ACMD41 commands

-0.3

0.3

V

Power up time

250

ms

Note. The current consumption of any card during the power-up procedure must not exceed 10 mA.

Where N is the number of connected cards. Requiring the sum of the host and bus capacitances not to exceed 30 pF for

up to 10 cards, and 40 pF for up to 30 cards, the following values must not be exceeded:

Parameter

Symbol

Min.

Max.

Unit

Remark

Bus signal line capacitance

100

pF

Single card capacitance

10

pF

Maximum signal line inductance

16

nH

Pull-up resistance inside card (pin1)

10

90

k

Ω

May be used for card

detection

connected separately to the SD Memory Card host.

Parameter

Symbol

Min.

Max.

Unit

Remark

Pull-up resistance

10

100

k

Ω

To prevent bus floating

Bus signal line capacitance

250

pF