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M95M04-DR датащи(PDF) 20 Page - STMicroelectronics |
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M95M04-DR датащи(HTML) 20 Page - STMicroelectronics |
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20 / 46 page ![]() Instructions M95M04-DR 20/46 DS12179 Rev 1 to 1, the relevant memory area (as defined in Table 3) becomes protected against Write (WRITE) instructions. The Block protect (BP1, BP0) bits can be written provided that the Hardware Protected mode has not been set. 6.3.4 SRWD bit The Status register Write Disable (SRWD) bit is operated in conjunction with the Write protect (W) signal. The Status register Write Disable (SRWD) bit and Write protect (W) signal enable 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) is driven low). In this mode, the non-volatile bits of the Status register (SRWD, BP1, BP0) become read-only bits and the Write Status register (WRSR) instruction is no longer accepted for execution. Table 6. Status register format b7 b0 SRWD 0 0 0 BP1 BP0 WEL WIP Status register Write protect Block protect bits Write enable latch bit Write in progress bit |
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