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GD25D10CTFG Datasheet(PDF) 22 Page - GigaDevice Semiconductor (Beijing) Inc. |
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GD25D10CTFG Datasheet(HTML) 22 Page - GigaDevice Semiconductor (Beijing) Inc. |
22 / 42 page 3.3V Uniform Sector Standard and Dual Serial Flash GD25D10C/05C 22 followed by the 24-bit device identification, stored in the memory. Each bit is shifted out on the falling edge of Serial Clock. The command sequence is shown in Figure17. The Read Identification (RDID) command is terminated by driving CS# high at any time during data output. When CS# is driven high, the device is in the Standby Mode. Once in the Standby Mode, the device waits to be selected, so that it can receive, decode and execute commands. Figure17. Read Identification ID Sequence Diagram 7.17.Read Unique ID (4BH) The Read Unique ID command accesses a factory-set read-only 128bit number that is unique to each device. The Unique ID can be used in conjunction with user software methods to help prevent copying or cloning of a system. The Read Unique ID command sequence: CS# goes low sending Read Unique ID command 3-Byte Address (000000H) Dummy Byte128bit Unique ID Out CS# goes high. Figure18. Read Unique ID Sequence Diagram (ADS=0) Command 0 1 2 3 4 5 6 7 4BH CS# SCLK SI SO High-Z 8 9 10 28 29 30 31 3 2 1 0 23 22 21 24-bit address MSB 34 35 36 37 33 6 5 4 3 2 1 0 38 39 Data Out1 32 42 43 44 45 41 46 47 40 7 6 5 4 3 2 1 0 7 6 5 7 Data Out2 CS# SCLK SI SO MSB Dummy Byte 0 1 2 3 4 5 6 7 CS# SCLK SI SO 8 9 10 MSB 18 19 20 21 17 6 5 4 3 2 1 0 22 23 16 26 27 28 29 25 30 31 24 7 Capacity JDID7-JDID0 CS# SCLK SI SO MSB Memory Type JDID15-JDID8 6 5 4 3 2 1 0 7 11 12 13 14 15 9FH 6 5 4 3 2 1 0 7 Manufacturer ID MSB Command |
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