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T
T
TS
S
S2
2
2G
G
GS
S
SD
D
D1
1
15
5
50
0
0
2GB 150x Secure Digital Card
Transcend Information Inc.
11
AC/DC Character
• 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
VDD
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
Supply voltage differentials (VSS1, VSS2)
-0.3
0.3
V
Power up time
250
ms
From 0v to VDD Min.
• 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
Parameter
Symbol
Min.
Max.
Unit
Remark
Bus signal line capacitance
CL
100
pF
fPP ≤ 20 MHz, 7 cards
Single card capacitance
CCARD
10
pF
Maximum signal line inductance
16
nH
fPP ≤ 20 MHz
Pull-up resistance inside card (pin1)
RDAT3
10
90
k
Ω
May be used for card
detection
Note that the total capacitance of CMD and DAT lines will be consist of CHOST, CBUS and one CCARD only since they are
connected separately to the SD Memory Card host.
Parameter
Symbol
Min.
Max.
Unit
Remark
Pull-up resistance
RCMD, RDAT
10
100
k
Ω
To prevent bus floating
Bus signal line capacitance
CL
250
pF
fPP ≤ 5 MHz, 21 cards