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GD25Q64CFJS датащи(PDF) 37 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25Q64CFJS датащи(HTML) 37 Page - GigaDevice Semiconductor (Beijing) Inc. |
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37 / 74 page ![]() 3.3V Uniform Sector Dual and Quad Serial Flash GD25Q64C 37 7.25. Quad I/O Read Manufacture ID/ Device ID (94H) The Quad I/O Read Manufacturer/Device ID command is an alternative to the Release from Power-Down / Device ID command that provides both the JEDEC assigned Manufacturer ID and the specific Device ID by quad I/O. The command is initiated by driving the CS# pin low and shifting the command code “94H” followed by a 24-bit address (A23-A0) of 000000H, and 4 dummy clocks. After which, the Manufacturer ID and the Device ID are shifted out on the falling edge of SCLK with most significant bit (MSB) first as shown in Figure30. If the 24-bit address is initially set to 000001H, the Device ID will be read first. Figure 30. Read Manufacture ID/ Device ID Quad I/O Sequence Diagram Command 0 1 2 3 4 5 6 7 94H 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 WP#(IO2) HOLD#(IO3) Dummy MFR ID DID CS# SCLK SI(IO0) SO(IO1) WP#(IO2) HOLD#(IO3) 24 25 26 27 28 29 30 31 4 0 4 0 5 1 5 1 6 2 6 2 7 3 7 3 MFR ID (Repeat) DID (Repeat) 4 0 4 0 5 1 5 1 6 2 6 2 7 3 7 3 MFR ID (Repeat) DID (Repeat) |
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