GD25LB256E3IRR Gigadevice

Uniform Sector Standard and Quad Serial Flash GD25LB256E GD25LB256E DATASHEET GD25LB256E-Rev1.7 1 July 2021 Uniform Sector Standard and Quad Serial Flash GD25LB256E Contents 1 FEATURES ......................................................................................................................................................... 4 2 GENERAL DESCRIPTIONS.............................................................................................................................. 5 3 MEMORY ORGANIZATION ............................................................................................................................. 11 4 DEVICE OPERATIONS .................................................................................................................................... 12 4.1 SPI MODE ............................................................................................................................................................ 12 4.2 QPI MODE............................................................................................................................................................ 12 4.3 RESET FUNCTION .................................................................................................................................................. 12 5 DATA PROTECTION ........................................................................................................................................ 14 6 REGISTERS ...................................................................................................................................................... 16 6.1 STATUS REGISTER ................................................................................................................................................... 16 6.2 FLAG STATUS REGISTER ........................................................................................................................................... 17 6.3 EXTENDED ADDRESS REGISTER .................................................................................................................................. 18 7 INTERNAL CONFIGURATION REGISTER ................................................................................................... 19 7.1 NONVOLATILE CONFIGURATION REGISTER ................................................................................................................... 19 7.2 VOLATILE CONFIGURATION REGISTER ......................................................................................................................... 21 7.3 SUPPORTED CLOCK FREQUENCIES .............................................................................................................................. 23 7.4 DATA SEQUENCE WRAPS BY DENSITY ......................................................................................................................... 24 8 COMMAND DESCRIPTIONS .......................................................................................................................... 25 8.1 ENABLE 4-BYTE MODE (B7H) .................................................................................................................................. 30 8.2 DISABLE 4-BYTE MODE (E9H) .................................................................................................................................. 30 8.3 WRITE ENABLE (WREN) (06H) ................................................................................................................................ 31 8.4 WRITE DISABLE (WRDI) (04H) ................................................................................................................................ 31 8.5 WRITE ENABLE FOR VOLATILE STATUS REGISTER (50H) ................................................................................................. 32 8.6 WRITE STATUS REGISTER (WRSR) (01H) ................................................................................................................... 32 8.7 WRITE EXTENDED ADDRESS REGISTER (C5H) ............................................................................................................... 33 8.8 WRITE NONVOLATILE/VOLATILE CONFIGURATION REGISTER (B1H/81H) ......................................................................... 34 8.9 READ STATUS REGISTER (05H) ................................................................................................................................. 34 8.10 READ FLAG STATUS REGISTER (70H) .......................................................................................................................... 35 8.11 READ NONVOLATILE/VOLATILE CONFIGURATION REGISTER (B5H/85H) ........................................................................... 36 8.12 READ EXTENDED ADDRESS REGISTER (C8H) ................................................................................................................ 37 8.13 READ DATA BYTES (03H/13H) ................................................................................................................................ 38 8.14 READ DATA BYTES AT HIGHER SPEED (0BH/0CH) ........................................................................................................ 38 8.15 QUAD OUTPUT FAST READ (6BH/6CH) ..................................................................................................................... 39 8.16 QUAD I/O FAST READ (EBH/ECH) ........................................................................................................................... 40 8.17 QUAD I/O DTR READ (EDH/EEH) ........................................................................................................................... 41 GD25LB256E-Rev1.7 2 July 2021