Universal serial bus flash memory integrated circuit device
AssigneePhision Electronic Corp
InventorsChien-An Chen, Khein-Seng Pua
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Abstract
The invention provides a flash memory integrated circuit device that is connectable to a computer via a universal serial bus. The universal serial bus (USB) has become a standard serial interface, which allows data to be stored in and read from an external memory device at high speed. Therefore, it is advantageous to combine the benefits of a flash memory device with the speed of the universal serial bus. In addition, by designing the flash memory device with a USB interface, the flash memory device appears as a standard USB storage device, which permits the host and flash memory device to connect and interact with ease.
Claims23
A universal serial bus flash memory integrated circuit device formed of an integrated circuit package containing a controller and at least one flash memory chip for controlling commands and data between said at least one flash memory chip and a host computer, the universal serial bus flash memory integrated circuit device comprising:
- a universal serial bus (USB) connector for connecting the universal serial bus flash memory integrated circuit device to a host computer;
- an extension stack connector that allows for extending a number of flash memories;
- and
- an I/O (input/output) control interface for system input/output control.
A universal serial bus flash memory integrated circuit device comprising:
- a universal serial bus for connecting the flash memory device to a host computer;
- at least one flash memory module for storing data;
- a flash memory interface for controlling read and write commands sending to said at least one flash memory module;
- a flash memory extension interface for enabling the universal serial bus flash memory integrated circuit device to be electrically connected to external flash memories;
- a universal serial bus interface for communication between said at least one flash memory module and the host computer;
- and
- a controller for controlling commands and data between the host computer and the universal serial bus flash memory integrated circuit device and for managing data in the at least one flash memory module, said controller comprising:
- a system buffer for buffering between the host computer and the flash memory device;
- a microprocessor for executing commands with parameters from the host;
- and
- a state machine for creating read and write timing to the system buffer.
Dependencies are inferred from the claim text.