GD25B257DFIR datasheet(2/92 Pages) GIGADEVICE

2 / 92 page

3.3V Uniform Sector

Dual and Quad Serial Flash

GD25B257D

Contents

FEATURES

.........................................................................................................................................................4

GENERAL DESCRIPTION

................................................................................................................................5

MEMORY ORGANIZATION

...............................................................................................................................8

DEVICE OPERATION

........................................................................................................................................9

4.1.

SPI MODE .............................................................................................................................................................. 9

4.2.

ECC FUNCTION ........................................................................................................................................................ 9

DATA PROTECTION

........................................................................................................................................10

ECC OPERATION

............................................................................................................................................11

STATUS AND EXTENDED ADDRESS REGISTERS

....................................................................................12

7.1.

STATUS REGISTERS.................................................................................................................................................. 12

7.2.

EXTENDED ADDRESS REGISTER .................................................................................................................................. 16

COMMANDS DESCRIPTION

..........................................................................................................................18

8.1.

WRITE ENABLE (WREN) (06H)................................................................................................................................ 23

8.2.

WRITE DISABLE (WRDI) (04H) ................................................................................................................................ 23

8.3.

WRITE ENABLE FOR VOLATILE STATUS REGISTER (50H) ................................................................................................. 24

8.4.

READ STATUS REGISTER (RDSR) (05H OR 35H OR 15H) .............................................................................................. 24

8.5.

WRITE STATUS REGISTER (WRSR) (01H OR 31H OR 11H) ........................................................................................... 25

8.6.

READ EXTENDED REGISTER (C8H) ............................................................................................................................. 26

8.7.

WRITE EXTENDED REGISTER (C5H OR 56H) ................................................................................................................ 26

8.8.

READ DATA BYTES (REAC 03H OR 4READ 13H) ........................................................................................................ 27

8.9.

READ DATA BYTES AT HIGHER SPEED (FAST READ 0BH OR 4FAST READ 0CH)................................................................... 28

8.10.

DUAL OUTPUT FAST READ (DOFR 3BH OR 4DOFR 3CH) ............................................................................................ 29

8.11.

QUAD OUTPUT FAST READ (QOFR 6BH OR 4QOFR 6CH) ........................................................................................... 31

8.12.

DUAL I/O FAST READ (DIOFR BBH OR 4DIOFR BCH) ................................................................................................ 34

8.13.

QUAD I/O FAST READ (QIOFR EBH OR 4QIOFR ECH) ............................................................................................... 38

8.14.

SET BURST WITH WRAP (77H) ................................................................................................................................. 41

8.15.

QUAD I/O DTR READ (EEH OR EDH)........................................................................................................................ 42

8.16.

WRITE DATA LEARNING PATTERN (4AH) .................................................................................................................... 45

8.17.

PAGE PROGRAM (PP 02H OR 4PP 12H).................................................................................................................... 46

8.18.

QUAD PAGE PROGRAM (QPP 32H OR 4QPP 34H) ..................................................................................................... 48

8.19.

SECTOR ERASE (SE 20H OR 4SE 21H) ....................................................................................................................... 52

8.20.

32KB BLOCK ERASE (BE32 52H OR 4BE32 5CH)....................................................................................................... 53

8.21.

64KB BLOCK ERASE (BE64 D8H OR 4BE64 DCH)...................................................................................................... 54

8.22.

CHIP ERASE (CE) (60/C7H)..................................................................................................................................... 55

8.23.

DEEP POWER-DOWN (DP) (B9H)............................................................................................................................. 56

8.24.

READ UNIQUE ID (4BH).......................................................................................................................................... 57

8.25.

ENTER 4-BYTE ADDRESS MODE (B7H)....................................................................................................................... 58

8.26.

EXIT 4-BYTE ADDRESS MODE (E9H).......................................................................................................................... 58

GD25B257DFIR Datasheet(PDF) 2 Page - GigaDevice Semiconductor (Beijing) Inc.

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