參數(shù)資料
型號: W25Q32DWZPIP
廠商: WINBOND ELECTRONICS CORP
元件分類: PROM
英文描述: 256K X 16 SPI BUS SERIAL EEPROM, 7.5 ns, PDSO8
封裝: 6 X 5 MM, GREEN, WSON-8
文件頁數(shù): 62/82頁
文件大小: 1155K
代理商: W25Q32DWZPIP
W25Q32DW
Publication Release Date: January 18, 2011
- 65 -
Preliminary - Revision C
10.2.40 Enable QPI (38h)
The W25Q32DW support both Standard/Dual/Quad Serial Peripheral Interface (SPI) and Quad
Peripheral Interface (QPI). However, SPI mode and QPI mode can not be used at the same time. “Enable
QPI (38h)” instruction is the only way to switch the device from SPI mode to QPI mode.
Upon power-up, the default state of the device upon is Standard/Dual/Quad SPI mode. This provides full
backward compatibility with earlier generations of Winbond serial flash memories. See Intruction Set
Table 1-3 for all supported SPI commands. In order to switch the device to QPI mode, the Quad Enable
(QE) bit in Status Register 2 must be set to 1 first, and an “Enable QPI (38h)” instruction must be issued.
If the Quad Enable (QE) bit is 0, the “Enable QPI (38h)” instruction will be ignored and the device will
remain in SPI mode.
See Instruction Set Table 4 for all the commands supported in QPI mode.
When the device is switched from SPI mode to QPI mode, the exsiting Write Enable and Program/Erase
Suspend status, and the Wrap Length setting will remain unchanged.
/CS
CLK
DI
(IO
0)
DO
(IO
1)
Mode 0
Mode 3
0
1
2
3
4
5
6
7
Instruction (38h)
High Impedance
Mode 0
Mode 3
Figure 39. Enable QPI Instruction (SPI Mode only)
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