GD5F2GQ4UE9IG datasheet(16/50 Pages) GIGADEVICE

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SPI(x1/x2/x4) NAND Flash

READ OPERATIONS

8.1 Page Read

The PAGE READ (13H) command transfers the data from the NAND Flash array to the cache register. The command

sequence is as follows:

• 13H (PAGE READ to cache)

• 0FH (GET FEATURES command to read the status)

• 03H or 0BH (Read from cache)/3BH (Read from cache x2)/6BH (Read from cache x4)/BBH (Read from cache dual

IO)/EBH (Read from cache quad IO)

The PAGE READ command requires a 24-bit address. After the block/page addresses are registered, the device starts the

transfer from the main array to the cache register, and is busy for tRD time. During this time, the GET FEATURE (0FH)

command can be issued to monitor the status. Followed the page read operation, the RANDOM DATA READ

(03H/0BH/3BH/6BH/BBH/EBH) command must be issued in order to read out the data from cache. The output data starts

at the initial address specified in the command, once it reaches the ending boundary of the 2176-byte section, the output

will wrap around the beginning boundary automatically until CS# is pulled high to terminate this operation. Refer

waveforms to view the entire READ operation.

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