GD25Q21B

Uniform Sector Dual and Quad Serial Flash GD25Q21B GD25Q21B DATASHEET 1 Uniform Sector Dual and Quad Serial Flash GD25Q21B 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. 7.2. 7.3. 7.4. 7.5. 7.6. 7.7. 7.8. 7.9. 7.10. 7.11. 7.12. 7.13. 7.14. 7.15. 7.16. 7.17. 7.18. 7.19. 7.20. 7.21. 7.22. 7.23. 7.24. 7.25. 7.26. 7.27. 7.28. 7.29. 7.30. 7.31. WRITE ENABLE (WREN) (06H).............................................................