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GD25S512MDFJS 数据表(PDF) 36 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25S512MDFJS 数据表(HTML) 36 Page - GigaDevice Semiconductor (Beijing) Inc. |
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36 / 87 page ![]() 3.3V Uniform Sector Dual and Quad Serial Flash GD25S512MD 36 Figure 27 Dual I/O Fast Read with 4-Byte Address Sequence Diagram (ADS=0 or ADS=1) 7.15. Quad I/O Fast Read (QIOFR EBH or 4QIOFR ECH) The Quad I/O Fast Read command is similar to the Dual I/O Fast Read command but with the capability to input the 3-Byte address (A23- 0) and a “Read Mode” Byte and 4-dummy clock 4-bit per clock by IO0, IO1, IO2, IO3, and each bit being latched in on the rising edge of SCLK, then the memory contents are shifted out 4-bit per clock cycle from IO0, IO1, IO2, IO3. The first Byte addressed can be at any location. The address is automatically incremented to the next higher address after each Byte of data is shifted out. Figure 28 Quad I/O Fast Read Sequence Diagram (ADS=0) Command 0 1 2 3 4 5 6 7 EBH CS# SCLK SI(IO0) SO(IO1) 8 9 10 11 12 13 14 15 4 0 4 0 4 0 4 0 16 17 18 19 20 21 22 23 4 0 4 0 5 1 5 1 5 1 5 1 5 1 5 1 A23-16 A15-8 A7-0 M7-0 6 2 6 2 6 2 6 2 6 2 6 2 7 3 7 3 7 3 7 3 7 3 7 3 IO2 IO3 4 5 6 7 Dummy Byte1 Byte2 Command 0 1 2 3 4 5 6 7 BCH CS# SCLK SI(IO0) SO(IO1) 8 9 10 11 12 13 14 15 6 4 2 0 6 4 2 0 16 17 18 19 20 21 22 23 6 4 2 0 7 5 3 1 7 5 3 1 7 5 3 1 A31-24 A15-8 A7-0 CS# 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 SI(IO0) SO(IO1) 6 4 2 0 6 4 2 0 6 4 2 0 6 4 2 0 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 SCLK 6 7 Byte1 Byte2 Byte3 Byte4 6 4 7 5 M7-4 24 25 26 27 6 4 2 0 7 5 3 1 A23-16 2 0 3 1 M3-0 |
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