GD25Q40B Datasheet | GigaDevice

Uniform Sector Dual and Quad Serial Flash GD25Q40B/20B GD25Q40B/20B DATASHEET Uniform Sector Dual and Quad Serial Flash Contents GD25Q40B/20B 1. Features .........................................................................................................................................................4 2. GENERAL DESCRIPTION ................................................................................................................................5 3. MEMORY ORGANIZATION...............................................................................................................................7 4. DEVICE OPERATION ........................................................................................................................................9 5. DATA PROTECTION........................................................................................................................................10 6. STATUS REGISTER.........................................................................................................................................14 7. MANDS DESCRIPTION..........................................................................................................................16 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. WRITE ENABLE (WREN) (06H)................................................................................................................................ 19 WRITE DISABLE (WRDI) (04H) ................................................................................................................................ 19 READ STATUS REGISTER (RDSR) (05H OR 35H) .......................................................................................................... 19 WRITE STATUS REGISTER (WRSR) (01H) ....................................................................................................................