PQI U191 manual USB Flash Drive, Rev. A.0, VDD18

Models: U191

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VDD18

USB Flash Drive

6. DC Characteristics

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

1.62

1.8

1.98

V

VCCA

 

 

 

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

7. Recommended Operating Conditions

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

 

 

 

 

 

 

8. Pin Assignments

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 2

 

 

 

 

 

Pin 3

 

 

 

 

 

 

 

 

 

 

 

 

Pin 1

 

 

 

 

 

Pin 4

 

 

 

 

 

 

 

 

 

Rev. A.0

3/4

Sep 2006

Page 6
Image 6
PQI U191 manual USB Flash Drive, Rev. A.0, VDD18