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S70FS01GS Datasheet(PDF) 82 Page - Cypress Semiconductor |
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S70FS01GS Datasheet(HTML) 82 Page - Cypress Semiconductor |
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82 / 141 page ![]() S70FS01GS Document Number: 002-03833 Rev. *C Page 82 of 141 This command is also supported in Quad All mode. In Quad AIl mode the instruction is shifted in on IO0-IO3, two clock cycles per byte. The ECC read command is not supported for 0 dummy latency in Quad All mode. Figure 9.13 ECCRD (19h), Quad All Mode, CR2[7] = 0, Command Sequence Figure 9.14 ECCRD (19h), Quad All Mode, CR2[7] = 1, or 4ECCRD (18h) Command Sequence 9.3.5 Write VDLR (WVDLR 4Ah) Before the Write VDLR (WVDLR) 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 WVDLR operation. The WVDLR command is entered by shifting the instruction and the data byte on SI. CS# must be driven to the logic high state after the eighth (8th) bit of data has been latched. If not, the WVDLR command is not executed. As soon as CS# is driven to the logic high state, the WVDLR operation is initiated with no delays. The maximum clock frequency for the PNVDLR command is 133 MHz. Figure 9.15 Write VDLR (WVDLR) Command Sequence CS SCLK IO0 IO1 IO2 IO3 Phase 4 0 20 4 0 4 0 4 0 4 0 4 0 5 1 21 5 1 5 1 5 1 5 1 5 1 6 2 22 6 2 6 2 6 2 6 2 6 2 7 3 23 7 3 7 3 7 3 7 3 7 3 Instruct. Address Dummy D1 D2 D3 D4 CS SCLK IO0 IO1 IO2 IO3 Phase 4 0 28 4 0 4 0 4 0 4 0 4 0 5 1 29 5 1 5 1 5 1 5 1 5 1 6 2 30 6 2 6 2 6 2 6 2 6 2 7 3 31 7 3 7 3 7 3 7 3 7 3 Instruct. Address Dummy D1 D2 D3 D4 CS# SCK SI SO Phase 7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 Instruction Input Data |
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