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IS25LE512M-RLLA3:P-TY датащи(PDF) 170 Page - Integrated Silicon Solution, Inc |
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IS25LE512M-RLLA3:P-TY датащи(HTML) 170 Page - Integrated Silicon Solution, Inc |
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170 / 189 page ![]() IS25LE512M IS25WE512M Integrated Silicon Solution, Inc.- www.issi.com 170 Rev. A6 06/16/2025 8.67 WRITE VDLR OPERATION (WRVDLR, 4Ah) Before the Write VDLR (WRVDLR) command can be accepted by the device, a Write Enable (WREN) command must be issued and decoded by the device. After the Write Enable (WREN) command has been decoded successfully, the device will set the Write Enable Latch (WEL) to enable the WRVDLR operation. The WRVDLR command (4Ah) is entered by shifting the instruction and data byte on SI. CE# must be driven to the logic high state after the eighth (8th) bit of data has been latched. If not, the WRVDLR command is not executed. As soon as CE# is driven to the logic high state, the WRVDLR operation is initiated with no delays. Figure 8.146 WRVDLR Sequence In SPI Mode Instruction = 4Ah CE # SCK SI SO Data In 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Mode 3 Mode 0 7 3 2 1 0 6 5 4 High Impedence Figure 8.147 WRVDLR Sequence In QPI Mode 4Ah 0 1 Mode 3 Mode 0 2 3 7:4 3:0 CE# SCK IO[3:0] Data In |
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