PQI U350H Computer Drive User Manual


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USB Flash Drive
Rev. A.0 3/4 Sep 2006
6. DC Characteristics
7. Recommended Operating Conditions
8. Pin Assignments
Symbol Parameter Min. Typical Max. Units
VDD Supply voltage for VCC3 or VCC3A
3.0 3.3 3.6
V
VDD18
Regulator output voltage for VCC or
VCCA
1.62 1.8 1.98 V
VIL Input Low Voltage
-0.5 0.8 V
VIH Input High Voltage
2.0 V
VOL Output Low Voltage (IOL=4mA)
0.4 V
VOH Output High Voltage (IOH=4mA)
2.4 V
CIN Input pin capacitance
10
pF
IDD Supply current
50 mA
ISUS Suspend current (D+1.5KΩ)
300 uA
Symbol Parameter Min. Typical Max. Units
VCC33 Power Supply Voltage 3.0 3.3 3.3 V
VIN Input Voltage 0 Vcc Vcc + 0.3 V
VCC25 Internal Power Support 2.25 2.50 2.75 V
Pin No. Pin Name Function
1 VCC USB power input
2 USB D- USB differential signal
3 USB D+ The pairs are used to transmit Data/Address/Command
4 VSS Ground
Pin 1
Pin 2 Pin 3
Pin 4
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