GD25LB128DSJS datasheet(51/75 Pages) GIGADEVICE

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1.8V Uniform Sector

Dual and Quad Serial Flash

GD25LB128D

7.33.

Burst Read with Wrap (0CH)

The

“Burst Read with Wrap (0CH)” command provides an alternative way to perform the read operation with “Wrap

Around

” in QPI mode. This command is similar to the “Fast Read (0BH)” command in QPI mode, except the addressing of

the read operation will

“Wrap Around” to the beginning boundary of the “Wrap Around” once the ending boundary is reached.

The

“Wrap Length” and the number of dummy clocks can be configured by the “Set Read Parameters (C0H)” command.

Figure35. Burst Read with Wrap command Sequence Diagram

CS#

SCLK

IO0

IO1

IO2

IO3

Command

0CH

A23-16

A15-8

A7-0

Dummy*

12 13

IOs switch from

Input to output

Byte1

Byte2

Byte3

*"Set Read Parameters" Command (C0H)

can set the number of dummy clocks

7.34.

Enable QPI (38H)

The device support both Standard/Dual/Quad SPI and QPI mode. The

“Enable QPI (38H)” command can switch the

device from SPI mode to QPI mode. See the command Table 2a for all support QPI commands. In order to switch the device

to QPI mode, the

“Enable QPI (38H)” command must be issued. When the device is switched from SPI mode to QPI mode,

the existing Write Enable Latch and Program/Erase Suspend status, and the Wrap Length setting will remain unchanged.

Figure36. Enable QPI mode command Sequence Diagram

Command

38H

CS#

SCLK

GD25LB128DSJS Datasheet(PDF) 51 Page - GigaDevice Semiconductor (Beijing) Inc.

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