PQI U250 manual Symbol Parameter Min Typical Max Units, Pin No Pin Name Function

Page 6

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

Image 6
Contents Traveling Disk U250 BB44 Series USB Flash Drive Revision History Revision Date History 09/11 ‘06 New Creation RemarkMain Features Overview Product SpecificationIntroduction to U250 Micro Controller Program RAM Symbol Parameter Min Max UnitProgram ROM FlashSymbol Parameter Min Typical Max Units Pin No Pin Name FunctionPhysical Specifications