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ACE25AA128GFMLTH 데이터시트(PDF) 52 Page - ACE Technology Co., LTD. |
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ACE25AA128GFMLTH 데이터시트(HTML) 52 Page - ACE Technology Co., LTD. |
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52 / 71 page ![]() ACE25AA128G Serial NOR Flash Memory 128 Megabits 3.0V Quad I/O Serial Flash Memory with 4KB Uniform Sector VER 1.1 52 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 Quad Enable (QE) bit in Status Register-1 must be set to 1 first, and “Enable QPI (38H)” command must be issued. If the QE bit is 0, the “Enable QPI (38H)” command will be ignored and the device will remain in SPI mode. 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. Figure39. Burst Read With Wrap Command Sequence Diagram Figure40. Enable QPI Mode Command Sequence Diagram |
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