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GD25LE256DFIS データシート(PDF) 57 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25LE256DFIS データシート(HTML) 57 Page - GigaDevice Semiconductor (Beijing) Inc. |
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57 / 83 page  1.8V Uniform Sector Dual and Quad Serial Flash GD25LE256D 57 7.34. Set Read Parameters (C0H) In QPI mode the “Set Read Parameters (C0H)” command can be used to configure the number of dummy clocks for “Fast Read (0BH)”, “Quad I/O Fast Read (EBH)” , “Burst Read with Wrap (0CH)”, “Burst Read with Wrap for Lower 128Mb (8CH) ” and “Burst Read with Wrap For Higher 128Mb (8DH)” command, and to configure the number of bytes of “Wrap Length ” for the “Burst Read with Wrap (0CH)” command. The “Wrap Length” is set by W5-6 bit in the “Set Burst with Wrap (77H) ” command. This setting will remain unchanged when the device is switched from Standard SPI mode to QPI mode. P5-P4 Dummy Clocks Maximum Read Freq. P1-P0 Wrap Length -40~85℃ -40~105℃ -40~125℃ 0 0 4 80MHz 60MHz 60MHz 0 0 8-byte 0 1 6 108MHz 80MHz 80MHz 0 1 16-byte 1 0 8 120MHz 104MHz 104MHz 1 0 32-byte 1 1 8 120MHz 104MHz 104MHz 1 1 64-byte Figure36. Set Read Parameters command Sequence Diagram CS# SCLK IO0 IO1 IO2 IO3 0 1 2 3 Command C0H P4 P0 P6 P2 P7 P3 P5 P1 Read Parameters |
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