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