PQI U220 - Manual (Page 5)

USB Flash Drive
Rev. A.0 2/4 Sep 2006
4. Block Diagram
5. Absolute Maximum Ratings
Symbol Parameter Min Max Unit
Tstorage Storage Temperature -20 75 ℃
Ta Ambient Operating Temperature 0 65 ℃
Vcc3 3.3V Supply Voltage -0.3 3.6 V
Vcc18 1.8V Supply Voltage -0.3 2 V
Vin3.3 3.3V Buffer Input Voltage -0.3 3.6 V
Vin3/5 3.3V/5V Buffer Input Voltage -0.3 5 V
Vin1.8 1.8V Buffer Input Voltage -0.3 2 V
8051 Micro
Controller
Data /
Address
Bus
USB 2.0
Interface
USB2.0
USB1.1
Host
PLL, REG
Program ROM
Program RAM
DMA
Flash
Control
Logic
EDC/
ECC
DATA RAM
CLK
PWR_GOOD
PWR_RST
Flash
Memory
USB2.0 or
1.1 Port