3.3V Uniform Sector Dual and Quad Serial Flash GD25Q40C GD25Q40C DATASHEET 1 3.3V Uniform Sector Dual and Quad Serial Flash GD25Q40C Contents 1. FEATURES .................................................................................................................................................. 4 2. GENERAL DESCRIPTION .......................................................................................................................... 5 3. MEMORY ORGANIZATION ......................................................................................................................... 7 4. DEVICE OPERATION .................................................................................................................................. 8 5. DATA PROTECTION ................................................................................................................................... 9 6. STATUS REGISTER .................................................................................................................................. 11 7. COMMANDS DESCRIPTION .................................................................................................................... 13 7.1. WRITE ENABLE (WREN) (06H) ............................................................................................................. 16 7.2. WRITE DISABLE (WRDI) (04H) .............................................................................................................. 16 7.3. READ STATUS REGISTER (RDSR) (05H OR 35H) ................................................................................... 17 7.4. WRITE STATUS REGISTER (WRSR) (01H) ............................................................................................. 17 7.5. WRITE ENABLE FOR VOLATILE STATUS REGISTER (50H) ........................................................................ 18 7.6. READ DATA BYTES (READ) (03H) ........................................................................................................ 18 7.7. READ DATA BYTES AT HIGHER SPEED (FAST READ) (0BH) ..................................................................... 19 7.8. DUAL OUTPUT FAST READ (3BH) .......................................................................................................... 19 7.9. QUAD OUTPUT FAST READ (6BH) ......................................................................................................... 20 7.10. DUAL I/O FAST READ (BBH) ................................................................................................................. 20 7.11. QUAD I/O FAST READ (EBH) ................................................................................................................. 22 7.12. QUAD I/O WORD FAST READ (E7H) ...................................................................................................... 23 7.13. SET BURST WITH WRAP (77H) .............................................................................................................. 24 7.14. PAGE PROGRAM (PP) (02H) ................................................................................................................. 24 7.15. QUAD PAGE PROGRAM (32H) ................................................................................................................ 25 7.16. SECTOR ERASE (SE) (20H) .................................................................................................................. 26 7.17. 32KB BLOCK ERASE (BE) (52H) ........................................................................................................... 27 7.18. 64KB BLOCK ERASE (BE) (D8H) .......................................................................................................... 27 7.19. CHIP ERASE (CE) (60/C7H) .................................................................................................................. 28 7.20. DEEP POWER-DOWN (DP) (B9H) .......................................................................................................... 28 7.21. RELEASE FROM DEEP POWER-DOWN OR HIGH PERFORMANCE MODE AND READ DEVICE ID (RDI) (ABH) 29 7.22. READ MANUFACTURE ID/ DEVICE ID (REMS) (90H) .............................................................................. 30 7.23. READ IDENTIFICATION (RDID) (9FH) ..................................................................................................... 31 7.24. HIGH PERFORMANCE MODE (HPM) (A3H) ............................................................................................. 31 7.25. CONTINUOUS READ MODE RESET (CRMR) (FFH) ................................................................................. 32 7.26. READ UNIQUE ID (4BH) ........................................................................................................................ 33 7.27. PROGRAM/ERASE SUSPEND (PES) (75H) .............................................................................................. 33 7.28. PROGRAM/ERASE RESUME (PER) (7AH) ............................................................................................... 34 7.29. ERASE SECURITY REGISTERS (44H) ...................................................................................................... 34 7.30. PROGRAM SECURITY REGISTERS (42H) ................................................................................................. 35 7.31. READ SECURITY REGISTERS (48H) ........................................................................................................ 36 7.32. ENABLE RESET (66H) AND RESET (99H) ............................................................................................... 36 2