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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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JS28F128J3C120 датащи(PDF) 49 Page - Intel Corporation |
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JS28F128J3C120 датащи(HTML) 49 Page - Intel Corporation |
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49 / 72 page  28F256J3, 28F128J3, 28F640J3, 28F320J3 Datasheet 49 13.4 Array Protection The VPEN signal is a hardware mechanism to prohibit array alteration. When the VPEN voltage is below the VPENLK voltage, array contents cannot be altered. To ensure a proper erase or program operation, VPEN must be set to a valid voltage level. To determine the status of an erase or program operation, poll the Status Register and analyze the bits. 6 Factory 10 00 010 00 7 Factory 10 00 010 01 8 User 1 0 0 0 010 10 9 User 1 0 0 0 010 11 A User 1 0 0 0 011 00 B User 1 0 0 0 011 01 C User 1 0 0 0 011 10 D User 1 0 0 0 011 11 E User 1 0 0 0 100 00 F User 1 0 0 0 100 01 NOTE: All address lines not specified in the above table must be 0 when accessing the Protection Register, i.e.g., A[MAX:9] = 0. Table 21. Byte-Wide Protection Register Addressing (Sheet 2 of 2) |
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