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M29W128GH70N3E Datasheet(PDF) 39 Page - Numonyx B.V |
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M29W128GH70N3E Datasheet(HTML) 39 Page - Numonyx B.V |
39 / 94 page M29W128GH, M29W128GL Command interface 39/94 6.2.12 Unlock Bypass Reset command The Unlock Bypass Reset command can be used to return to read/reset mode from unlock bypass mode. Two bus write operations are required to issue the Unlock Bypass Reset command. Read/Reset command does not exit from unlock bypass mode. Table 12. Fast program commands, 8-bit mode Command Bus write operations(1) 1st 2nd 3rd 4th 5th 6th 7th 8th 9th Add Data Add Data Add Data Add Data Add Data Add Data Add Data Add Data Add Data Write to Buffer Program N+5 AAA AA 555 55 BAd 25 BAd N(2) PA (3) PD WBL (4) PD Write to Buffer Program Confirm 1 BAd (5) 29 Buffered Program Abort and Reset 3 AAA AA 555 55 AAA F0 Unlock Bypass 3 AAA AA 555 55 AAA 20 Unlock Bypass Program 2 X A0 PA PD Unlock Bypass Block Erase 2+ X 80 BAd 30 Unlock Bypass Chip Erase 2X 80 X 10 Unlock Bypass Write to Buffer Program N+3 BAd 25 BAd N(2) PA (3) PD WBL (6) PD Unlock Bypass Reset 2X 90 X 00 1. X don’t care, PA program address, PD program data, BAd any address in the block, WBL write buffer location. All values in the table are in hexadecimal. 2. The maximum number of cycles in the command sequence is 68. N+1 is the number of bytes to be programmed during the write to buffer program operation. 3. Each buffer has the same A22-A5 addresses. A0-A4 and A-1 are used to select a byte within the N+1 byte page. 4. The 6th cycle has to be issued N time. WBL scans the word inside the page. 5. BAd must be identical to the address loaded during the write to buffer program 3rd and 4th cycles. 6. The 4th cycle has to be issued N time. WBL scans the word inside the page. |
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