GD25Q21B

http://www.elm-tech.com GD25Q21B DATASHEET GD25Q21BxIGx Uniform Sector Dual and Quad Serial Flash http://www.elm-tech.com - Content - Page 1. FEATURES ------------------------------------------------------------------------------------------------- 4 2. GENERAL DESCRIPTION ----------------------------------------------------------------------------- 5 3. MEMORY ORGANIZATION -------------------------------------------------------------------------- 6 4. DEVICE OPERATION ---------------------------------------------------------------------------------- 6 5. DATA PROTECTION ------------------------------------------------------------------------------------ 7 6. STATUS REGISTER ------------------------------------------------------------------------------------- 9 7. COMMANDS DESCRIPTION ------------------------------------------------------------------------- 10 Table of ID Definition --------------------------------------------------------------------------------------- 13 7.1. Write Enable (WREN) (06H) ----------------------------------------------------------------------- 14 7.2. Write Disable (WRDI) (04H) ----------------------------------------------------------------------- 14 7.3. Write Enable for Volatile Status Register (50H) -------------------------------------------------- 15 7.4. Read Status Register (RDSR) (05H or 35H) ----------------------------------------------------- 15 7.5. Write Status Register (WRSR) (01H) ----------------------------------...