USB Flash Drive
Mr. Flash U191
BB50 Series
Rev. A.0
Sep 2006
USB Flash Drive
Revision History
Revision
Date
History
Remark
A.0
09/11 ‘06 New Creation
Important!! Please make sure the driver matches the part number on your pen drive before you download.
Software AP System Requirements. One of following operation systems: Windows 98/98SE/Windows ME/Windows 2000/Windows XP
The advertised memory capacity of this device represents unformatted capacity. Please note that once formatted and due to variations in flash
module block limitations, the functional storage space will be lower than the advertised capacity.
“PQI reserves the right to make changes without notification when fit, form, function, quality and reliability are not affected. The data sheets do
not constitute contract documents and should not be considered part of the specification for purposes of any warranty.”
Rev. A.0
Sep 2006
USB Flash Drive
1. Introduction to U191
The U191 gives you portability and security to offer you a peace of mind. Compatible with USB 2.0 / 1.1 specifications
with low power consumption and data protection.
2. Main Features Overview
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Mobile USB flash drive, USB 2.0 compatible
Hot swappable, USB Plug & Play compatible
LED indicator with three modes: Busy, waiting, and off
Multimedia and data storage
Support software for password protection, formatting & partitioning (Not Included)
3. Product Specification
USB Interface
High-speed USB 2.0 interface; backward compatible with USB 1.1
Integrated ECC circuits for 4-bit error correction
NAND Flash Interface
OS Support
No drive is required for Windows ME, 2000,XP or Mac OS 9.x
Environment
Operating
0℃ to 65℃
-20℃ to 75℃
0.2G
Temperature
Vibration
Non-Operating
Operating
Non-Operating
Operating
15G
150G
Shock resistant
Non-Operating
1000G
Configuration
Capacity
128MBytes ~ 2GBytes
1,000,000 hours
Reliability
MTBF(@25℃)
Power Requirement
Voltage
DC 3.3/5V ± 10%
Power Consumption
Read
<100mA
<120mA
<100mA
<100mA
<1.5mA
Write
Standby
Un-configuration
Suspend
Rev. A.0
1/4
Sep 2006
USB Flash Drive
4. Block Diagram
Program ROM
Program RAM
8051 Micro
Controller
Flash
Control
Logic
Flash
DMA
Memory
Data /
Address
Bus
EDC/
ECC
USB2.0
USB 2.0
USB1.1
USB2.0 or
1.1 Port
DATA RAM
Interface
Host
CLK
PWR_GOOD
PWR_RST
PLL, REG
5. Absolute Maximum Ratings
Symbol
Tstorage
Ta
Parameter
Min
-20
0
Max
75
65
3.6
2
Unit
℃
℃
V
Storage Temperature
Ambient Operating Temperature
3.3V Supply Voltage
Vcc3
-0.3
-0.3
-0.3
-0.3
-0.3
Vcc18
Vin3.3
Vin3/5
Vin1.8
1.8V Supply Voltage
V
3.3V Buffer Input Voltage
3.3V/5V Buffer Input Voltage
1.8V Buffer Input Voltage
3.6
5
V
V
2
V
Rev. A.0
2/4
Sep 2006
USB Flash Drive
6. DC Characteristics
Symbol
Parameter
Min.
Typical
Max.
Units
VDD
Supply voltage for VCC3 or VCC3A
Regulator output voltage for VCC or
VCCA
V
3.0
3.3
3.6
VDD18
1.62
1.8
1.98
0.8
V
VIL
VIH
Input Low Voltage
-0.5
2.0
V
V
Input High Voltage
VOL
VOH
CIN
IDD
Output Low Voltage (IOL=4mA)
Output High Voltage (IOH=4mA)
Input pin capacitance
0.4
10
V
2.4
V
pF
mA
uA
Supply current
50
ISUS
Suspend current (D+1.5KΩ)
300
7. Recommended Operating Conditions
Symbol
VCC33
VIN
Parameter
Min.
3.0
Typical
3.3
Max.
3.3
Units
Power Supply Voltage
V
V
V
Input Voltage
0
Vcc
Vcc + 0.3
2.75
VCC25
Internal Power Support
2.25
2.50
8. Pin Assignments
Pin No.
Pin Name
VCC
Function
1
2
3
4
USB power input
USB D-
USB D+
VSS
USB differential signal
The pairs are used to transmit Data/Address/Command
Ground
Pin 2
Pin 1
Pin 3
Pin 4
Rev. A.0
3/4
Sep 2006
USB Flash Drive
9. Physical Specifications
9.1 Dimensions:
9.1.1 Height:
9.1.2 Width:
9.1.3 Depth:
63.2mm
17.0mm
10.8mm
9.1.4 Weight: 7.8g ± 1g
9.2 Outline of top view
Rev. A.0
4/4
Sep 2006
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