Pqi U172 User Manual download pdf (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

1 2 3 4 5 6 7

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