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GD5F2GQ4RFZIS Datasheet(Scheda tecnica) 17 Page - GigaDevice Semiconductor (Beijing) Inc.

Numero della parte GD5F2GQ4RFZIS
Dettagli  SPI(x1/x2/x4) NAND Flash
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Produttore  GIGADEVICE [GigaDevice Semiconductor (Beijing) Inc.]
Homepage  http://www.gigadevice.com/
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SPI(x1/x2/x4) NAND Flash
2G
17
9
READ OPERATIONS
9.1 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 DATAREAD
(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, and will continue until CS# is pulled high to terminate this operation.
Refer waveforms to view the entire READ operation.
9.2 Page Read to Cache (13H)
Figure9-1.Page Read to cache Sequence Diagram
Command
0
1
2
3
4
5
6
7
13H
CS#
SCLK
SI
SO
High-Z
8
9 10
28 29 30 31
3
2
1
0
23 22 21
24-bit address
CS#
Get Feature
0
1
2
3
4
5
6
7
0FH
CS#
SLK
SI
SO
High-Z
8
9 10 11 12 13 14 15
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
7
MSB
1 byte address
Data byte
MSB
SCLK
SI
SO
tCS
16 17 18 19 20 21 22 23 24




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