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SST39SF020-70-4C-WH Datasheet(PDF) 6 Page - Silicon Storage Technology, Inc |
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SST39SF020-70-4C-WH Datasheet(HTML) 6 Page - Silicon Storage Technology, Inc |
6 / 23 page 6 © 1998 Silicon Storage Technology, Inc. 326-10 12/98 2 Megabit Multi-Purpose Flash SST39SF020 Preliminary Specifications TABLE 4: SOFTWARE COMMAND SEQUENCE Command 1st Bus 2nd Bus 3rd Bus 4th Bus 5th Bus 6th Bus Sequence Write Cycle Write Cycle Write Cycle Write Cycle Write Cycle Write Cycle Addr(1) Data Addr(1) Data Addr(1) Data Addr(1) Data Addr(1) Data Addr(1) Data Byte Program 5555H AAH 2AAAH 55H 5555H A0H BA(3) Data Sector Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H SAx(2) 30H Chip Erase 5555H AAH 2AAAH 55H 5555H 80H 5555H AAH 2AAAH 55H 5555H 10H Software ID Entry 5555H AAH 2AAAH 55H 5555H 90H Software ID Exit XXH F0H Software ID Exit 5555H AAH 2AAAH 55H 5555H F0H Notes: (1) Address format A14-A0 (Hex), Addresses A15, A16 and A17 are a “Don’t Care” for the Command sequence. (2) SAx for sector erase; uses A17-A12 address lines (3) BA = Program Byte address (4) Both Software ID Exit operations are equivalent Notes for Software ID Entry Command Sequence 1. With A17 -A1 =0; SST Manufacturer Code = BFH, is read with A0 = 0, SST39SF020 Device Code = B6H, is read with A0 = 1. 2. The device does not remain in Software Product ID Mode if powered down. 326 PGM T4.0 |
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