W25Q80BVDAAG WINBOND [Winbond], W25Q80BVDAAG Datasheet - Page 37
![no-image](/images/no-image-200.jpg)
W25Q80BVDAAG
Manufacturer Part Number
W25Q80BVDAAG
Description
8M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI
Manufacturer
WINBOND [Winbond]
Datasheet
1.W25Q80BVDAAG.pdf
(75 pages)
- Current page: 37 of 75
- Download datasheet (2Mb)
9.2.18
The Set Burst with Wrap (77h) instruction is used in conjunction with “Fast Read Quad I/O” and “Word
Read Quad I/O” instructions to access a fixed length of 8/16/32/64-byte section within a 256-byte page.
Certain applications can benefit from this feature and improve the overall system code execution
performance.
Similar to a Quad I/O instruction, the Set Burst with Wrap instruction is initiated by driving the /CS pin low
and then shifting the instruction code “77h” followed by 24 dummy bits and 8 “Wrap Bits”, W7-0. The
instruction sequence is shown in figure 17. Wrap bit W7 and the lower nibble W3-0 are not used.
Once W6-4 is set by a Set Burst with Wrap instruction, all the following “Fast Read Quad I/O” and “Word
Read Quad I/O” instructions will use the W6-4 setting to access the 8/16/32/64-byte section within any
page. To exit the “Wrap Around” function and return to normal read operation, another Set Burst with
Wrap instruction should be issued to set W4 = 1. The default value of W4 upon power on is 1. In the case
of a system Reset while W4 = 0, it is recommended that the controller issues a Set Burst with Wrap
instruction to reset W4 = 1 prior to any normal Read instructions since W25Q80BV does not have a
hardware Reset Pin.
CLK
/CS
IO
IO
IO
IO
Set Burst with Wrap (77h)
0
1
2
3
W6, W5
Mode 3
Mode 0
0 0
0 1
1 0
1 1
0
Wrap Around
1
Yes
Yes
Yes
Yes
Figure 17. Set Burst with Wrap Instruction Sequence
Instruction (77h)
2
3
W4 = 0
4
Wrap Length
5
16-byte
32-byte
64-byte
8-byte
- 37 -
6
7
X
X
X
X
don't
care
8
X
X
X
X
9
Wrap Around
Publication Release Date: October 06, 2010
X
X
X
X
10
don't
care
No
No
No
No
W4 =1 (DEFAULT)
X
X
X
X
11
X
X
X
X
12
don't
care
X
X
X
X
13
Wrap Length
Wrap Bit
w4
w5
w6
X
14
W25Q80BV
N/A
N/A
N/A
N/A
X
X
X
X
15
Mode 3
Mode 0
Revision D
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