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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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M58LR128HT Scheda tecnica(PDF) 52 Page - STMicroelectronics |
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M58LR128HT Scheda tecnica(HTML) 52 Page - STMicroelectronics |
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52 / 112 page  Block locking M58LR128HT, M58LR128HB 52/112 Table 16. Lock status Current Protection Status(1) (WP, DQ1, DQ0) 1. The lock status is defined by the write protect pin and by DQ1 (‘1’ for a locked-down block) and DQ0 (‘1’ for a locked block) as read in the Read Electronic Signature command with DQ1 = VIH and DQ0 = VIL. Next Protection Status(1) (WP, DQ1, DQ0) Current State Program/Erase Allowed After Block Lock Command After Block Unlock Command After Block Lock-Down Command After WP transition 1,0,0 yes 1,0,1 1,0,0 1,1,1 0,0,0 1,0,1(2) 2. All blocks are locked at power-up, so the default configuration is 001 or 101 according to WP status. no 1,0,1 1,0,0 1,1,1 0,0,1 1,1,0 yes 1,1,1 1,1,0 1,1,1 0,1,1 1,1,1 no 1,1,1 1,1,0 1,1,1 0,1,1 0,0,0 yes 0,0,1 0,0,0 0,1,1 1,0,0 0,0,1(2) no 0,0,1 0,0,0 0,1,1 1,0,1 0,1,1 no 0,1,1 0,1,1 0,1,1 1,1,1 or 1,1,0(3) 3. A WP transition to VIH on a locked block will restore the previous DQ0 value, giving a 111 or 110. |
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