×

Memory device in mobile phone

  • US 7,496,377 B2
  • Filed: 12/13/2001
  • Issued: 02/24/2009
  • Est. Priority Date: 09/07/2001
  • Status: Active Grant
First Claim
Patent Images

1. A memory device for a mobile phone comprising:

  • a flash memory for storing program data and user data;

    an interface circuit for copying program data stored in the flash memory according to whether data stored in the flash memory is valid;

    a first Random Access Memory (RAM) for providing an operation area to store and execute the copied program data; and

    a second RAM for storing data generated during the execution of program data,wherein the first and second RAMs are independent memories,wherein the interface circuit comprises a first logic gate for generating a NAND CE (chip enable) signal, said NAND CE signal enabling the flash memory, andwherein the interface circuit further comprises a second logic gate for generating a CLE (command latch enable) signal, said CLE signal informing the flash memory that incoming data is a command.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×