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MB84VD23381HJ Datasheet(PDF) 14 Page - SPANSION |
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MB84VD23381HJ Datasheet(HTML) 14 Page - SPANSION |
14 / 56 page MB84VD23381HJ-70 13 FlexBankTM Architecture Example of Virtual Banks Combination Note : When multiple sector erase over several banks is operated, the system cannot read out of the bank to which a sector being erased belongs. For example, suppose that erasing is taking place at both Bank A and Bank B, neither Bank A nor Bank B is read out (they would output the sequence flag once they were selected.) Meanwhile the system would get to read from either Bank C or Bank D. Simultaneous Operation * : By writing erase suspend command on the bank address of sector being erased, the erase operation gets suspended so that it enables reading from or programming the remaining sectors. Note: Bank 1 and Bank 2 are divided for the sake of convenience at Simultaneous Operation. Actually, the Bank consists of 4 banks, Bank A, Bank B, BankC and Bank D. Bank Address (BA) meant to specify each of the Banks. Bank Splits Bank 1 Bank 2 Volume Combination Volume Combination 1 8 Mbit Bank A 56 Mbit Remainder (Bank B, C, D) 2 24 Mbit Bank B 40 Mbit Remainder (Bank A, C, D) 3 24 Mbit Bank C 40 Mbit Remainder (Bank A, B, D) 4 8 Mbit Bank D 56 Mbit Remainder (Bank A, B, C) Bank Splits Bank 1 Bank 2 Volume Combination Sector Size Volume Combination Sector Size 18 Mbit Bank A 8 × 8 Kbyte/4 Kword + 15 × 64 Kbyte/32 Kword 56 Mbit Bank B + Bank C + Bank D 8 × 8 Kbyte/4 Kword + 111 × 64 Kbyte/32 Kword 216 Mbit Bank A + Bank D 16 × 8 Kbyte/4 Kword + 30 × 64 Kbyte/32 Kword 48 Mbit Bank B + Bank C 96 × 64 Kbyte/32 Kword 3 24 Mbit Bank B 48 × 64 Kbyte/32 Kword 40 Mbit Bank A + Bank C + Bank D 16 × 8 Kbyte/4 Kword + 78 × 64 Kbyte/32 Kword 432 Mbit Bank A + Bank B 8 × 8 Kbyte/4 Kword + 63 × 64 Kbyte/32 Kword 32 Mbit Bank C + Bank D 8 × 8 Kbyte/4 Kword + 63 × 64 Kbyte/32 Kword Case Bank 1 Status Bank 2 Status 1 Read mode Read mode 2 Read mode Autoselect mode 3 Read mode Program mode 4 Read mode Erase mode* 5 Autoselect mode Read mode 6 Program mode Read mode 7 Erase mode* Read mode |
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