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参数资料
| 型号： | W25Q40BLSNIP |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | PROM |
| 英文描述： | 4M X 1 SPI BUS SERIAL EEPROM, PDSO8 |
| 封装： | 3.81 MM, GREEN, PLASTIC, SOIC-8 |
| 文件页数： | 30/73页 |
| 文件大小： | 2221K |
| 代理商： | W25Q40BLSNIP |
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W25Q40BL
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8.2.18 Set Burst with Wrap (77h)
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.
W4 = 0
W4 =1 (default)
W6, W5
Wrap Around
Wrap Length
Wrap Around
Wrap Length
0 0
Yes
8-byte
No
N/A
0 1
Yes
16-byte
No
N/A
1 0
Yes
32-byte
No
N/A
1 1
Yes
64-byte
No
N/A
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 W25Q40BL does not have a
hardware Reset Pin.
Figure 17. Set Burst with Wrap Instruction Sequence
01
23
4
5
67
89
10
11
12
13
14
15
Mode 3
Mode 0
/CS
CLK
IO0
IO1
IO2
IO3
Instruction (77h)
don’t care don’t care don’t care
wrap bit
X
w6
w5
w4
X
01
23
4
5
67
89
10
11
12
13
14
15
Mode 3
Mode 0
/CS
CLK
IO0
IO1
IO2
IO3
Instruction (77h)
don’t care don’t care don’t care
wrap bit
X
w6
w5
w4
X
w6
w5
w4
X
相关PDF资料 |
PDF描述 |
|---|---|
| W25Q80BVSFIG | 1M X 8 SPI BUS SERIAL EEPROM, PDSO16 |
| W25X32AVZPIG | 4M X 8 FLASH 2.7V PROM, PDSO8 |
| W25X32AVSFIG | 4M X 8 FLASH 2.7V PROM, PDSO16 |
| W26L04AJ-12I | 256K X 16 STANDARD SRAM, 12 ns, PDSO44 |
| W26L04AH-10 | 256K X 16 STANDARD SRAM, 10 ns, PDSO44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| W25Q40BLSSIG | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 4M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q40BLSSIP | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 4M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q40BLZPIG | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 4M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q40BLZPIP | 制造商:WINBOND 制造商全称:Winbond 功能描述:2.5V 4M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
| W25Q40BV | 制造商:WINBOND 制造商全称:Winbond 功能描述:4M-BIT SERIAL FLASH MEMORY WITH DUAL AND QUAD SPI |
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