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M25P64-VMF6TP датащи(PDF) 27 Page - STMicroelectronics |
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M25P64-VMF6TP датащи(HTML) 27 Page - STMicroelectronics |
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27 / 49 page ![]() M25P64 Instructions 27/49 6.4.4 SRWD bit The Status Register Write Disable (SRWD) bit is operated in conjunction with the Write Protect (W/VPP) signal. The Status Register Write Disable (SRWD) bit and Write Protect (W/VPP) signal allow the device to be put in the Hardware Protected mode (when the Status Register Write Disable (SRWD) bit is set to 1, and Write Protect (W/VPP) is driven Low). In this mode, the non-volatile bits of the Status Register (SRWD, BP2, BP1, BP0) become read-only bits and the Write Status Register (WRSR) instruction is no longer accepted for execution. Figure 11. Read Status Register (RDSR) instruction sequence and data-out sequence C D S 2 1 3456789 10 11 12 13 14 15 Instruction 0 AI02031E Q 7 6543210 Status Register Out High Impedance MSB 7 6543210 Status Register Out MSB 7 |
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