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IS25LE128E-RMLA3:P-TY bảng dữ liệu(PDF) 154 Page - Integrated Silicon Solution, Inc |
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IS25LE128E-RMLA3:P-TY bảng dữ liệu(HTML) 154 Page - Integrated Silicon Solution, Inc |
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154 / 197 page ![]() IS25LE256E/128E IS25WE256E/128E Integrated Silicon Solution, Inc.- www.issi.com 154 Rev.A9 03/07/2023 8.50 EXIT 4-BYTE ADDRESS MODE OPERATION (EX4B, 29h) In order to be backward compatible, the Exit 4-byte Address Mode instruction allows 24bit address (A23-A0) to be used to access the memory array up to 128Mb. The Bank Address Register must be used to access the memory array beyond 128Mb. To execute EX4B operation, the host drives CE# low, sends the instruction code and then drives CE# high. A Write Enable (WREN, 06h) command is not required prior to EX4B (29h) command. Note: The EX4B instruc tion will reset the Bit 7 (EXTADD) of the volatile Bank Address Register to “0” ”, but will not change the non-volatile Bank Address Register. Figure 8.113 Exit 4-byte Address Mode Sequence In SPI Mode Instruction = 29h CE# SCK SI 0 1 2 3 4 5 6 7 Mode 3 Mode 0 SO High Impedance Figure 8.114 Exit 4-byte Address Mode Sequence In QPI Mode 29h CE# SCK IO[3:0] 0 1 Mode 3 Mode 0 |
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