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GD25Q128CXIGX Datasheet(PDF) 48 Page - ELM Electronics |
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GD25Q128CXIGX Datasheet(HTML) 48 Page - ELM Electronics |
48 / 69 page ![]() 48 Rev.1.2 69 - http://www.elm-tech.com GD25Q128CxIGx 3.3V Uniform Sector Dual and Quad Serial Flash 7.30. Read Security Registers (48H) The Read Security Registers command is similar to Fast Read command. The command is followed by a 3-byte address (A23-A0) and a dummy byte, each bit being latched-in during the rising edge of SCLK. Then the memory content, at that address, is shifted out on SO, each bit being shifted out, at a Max frequency fC, during the falling edge of SCLK. 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. Once the A8-A0 address reaches the last byte of the register (Byte 3FFH), it will reset to 000H, the command is completed by driving CS# high. Address A23-A16 A15-A12 A11-A9 A8-A0 Security Register #1 00H 0 0 0 1 0 0 0 Byte Address Security Register #2 00H 0 0 1 0 0 0 0 Byte Address Security Register #3 00H 0 0 1 1 0 0 0 Byte Address Figure 33. Read Security Registers command Sequence Diagram Command 0 1 2 3 4 5 6 7 48H 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 |
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