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GD25B127D Datasheet(PDF) 33 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25B127D Datasheet(HTML) 33 Page - GigaDevice Semiconductor (Beijing) Inc. |
33 / 65 page 3.3V Uniform Sector Dual and Quad Serial Flash GD25B127D 33 7.23. Read Manufacture ID/ Device ID Dual I/O (92H) The Read Manufacturer/Device ID Dual I/O 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 dual I/O. The command is initiated by driving the CS# pin low and shifting the command code “92H” followed by a 24-bit address (A23-A0) of 000000H. 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 Figure26. If the 24-bit address is initially set to 000001H, the Device ID will be read first. Figure26. Read Manufacture ID/ Device ID Dual I/O Sequence Diagram Command 0 1 2 3 4 5 6 7 92H 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 6 4 2 0 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 A23-16 A15-8 A7-0 M7-0 CS# 23 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 MFR ID Device ID 40 41 42 43 6 4 2 0 7 5 3 1 44 45 46 47 6 4 2 0 7 5 3 1 MFR ID (Repeat) Device ID (Repeat) MFR ID (Repeat) Device ID (Repeat) |
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