GD25Q21 Datasheet, PDF (2/49 Pages) ELM Electronics – Uniform Sector Dual and Quad Serial Flash

GD25Q21BxIGx Uniform Sector Dual and Quad Serial Flash
http://www.elm-tech.com
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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) -------------------------------------------------------------- 16
7.6. Write Status Register (WRSR) (31H) ------------------------------------------------------------- 17
7.7. Read Data Bytes (READ) (03H) -------------------------------------------------------------------- 18
7.8. Read Data Bytes at Higher Speed (Fast Read) (0BH) ------------------------------------------- 18
7.9. Dual Output Fast Read (3BH) ---------------------------------------------------------------------- 19
7.10. Quad Output Fast Read (6BH) ---------------------------------------------------------------------- 20
7.11. Dual I/O Fast Read (BBH) ------------------------------------------------------------------------- 20
7.12. Quad I/O Fast Read (EBH) ------------------------------------------------------------------------- 22
7.13. Quad I/O Word Fast Read (E7H) ------------------------------------------------------------------ 23
7.14. Set Burst with Wrap (77H) -------------------------------------------------------------------------- 25
7.15. Page Program (PP) (02H) --------------------------------------------------------------------------- 26
7.16. Quad Page Program (32H) -------------------------------------------------------------------------- 27
7.17. Sector Erase (SE) (20H) ----------------------------------------------------------------------------- 28
7.18. 32KB Block Erase (BE) (52H) --------------------------------------------------------------------- 28
7.19. 64KB Block Erase (BE) (D8H) --------------------------------------------------------------------- 29
7.20. Chip Erase (CE) (60/C7H) -------------------------------------------------------------------------- 29
7.21. Deep Power-Down (DP) (B9H) --------------------------------------------------------------------- 30
7.22. Release from Deep Power-Down or High Performance Mode and Read Device ID (RDI) (ABH) 31
7.23. Read Manufacture ID/Device ID (REMS) (90H) ------------------------------------------------- 32
7.24. Read Manufacture ID/Device ID Dual I/O (92H) ------------------------------------------------ 33
7.25. Read Manufacture ID/Device ID Quad I/O (94H) ----------------------------------------------- 34
7.26. Read Identification (RDID) (9FH) ------------------------------------------------------------------ 35
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