Справочник Пользователя для Transcend Information SDHC6
HD Video Card Series
4GB~16GB SDHC6 HD Video Card
Transcend Information Inc.
3
Bus Operating Conditions
• General
Parameter
Symbol
Min.
Max.
Unit
Remark
Peak voltage on all lines
-0.3 V
DD
+0.3
V
All Inputs
Input Leakage Current
Input Leakage Current
-10 10 µA
All Outputs
Output Leakage Current
Output Leakage Current
-10 10 µA
• Power Supply Voltage
Parameter
Symbol
Min.
Max.
Unit
Remark
Supply voltage
V
DD
2.7 3.6 V
Output High Voltage
V
OH
0.75*
V
DD
V
I
OH
=-100uA@V
DD
Min.
Output Low Voltage
V
OL
0.125*
V
DD
V I
OL
=100uA@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
Power up time
250
ms
From 0v to V
DD
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 C
L
the CLK line of the SD Memory Card bus is the sum of the bus master capacitance C
HOST
, the bus
capacitance C
BUS
itself and the capacitance C
CARD
of each card connected to this line:
C
L
= C
HOST
+ C
BUS
+
Ν*C
CARD
Where N is the number of connected cards.
Parameter
Symbol
Min.
Max.
Unit
Remark
Pull-up resistance
R
CMD
R
DAT
10 100 k
Ω To
prevent
bus
floating
Bus signal line capacitance
C
L
40
pF
1
card
C
HOST
+C
BUS
shall not exceed
30 pF