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GD25LB128DSJS Datasheet(PDF) 43 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25LB128DSJS Datasheet(HTML) 43 Page - GigaDevice Semiconductor (Beijing) Inc. |
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43 / 75 page ![]() 1.8V Uniform Sector Dual and Quad Serial Flash GD25LB128D 43 7.24. Read Manufacture ID/ Device ID Quad I/O (94H) The Read Manufacturer/Device ID Quad 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 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. 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 Quad I/O Sequence Diagram Command 0 1 2 3 4 5 6 7 94H CS# SCLK IO0 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 Dummy MFR ID DID CS# SCLK 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) IO0 IO1 IO2 IO3 |
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