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W49F201S-45B Datasheet(PDF) 7 Page - Winbond |
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W49F201S-45B Datasheet(HTML) 7 Page - Winbond |
7 / 23 page Preliminary W49F201 Publication Release Date: June 1999 - 7 - Revision A1 Command Codes for Word Program WORD SEQUENCE ADDRESS DATA 0 Write 5555H AAH 1 Write 2AAAH 55H 2 Write 5555H A0H 3 Write Programmed-address Programmed-data Pause 50 µS Word Program Flow Chart Word Program Command Flow Load data AA to address 5555 Load data 55 to address 2AAA Load data A0 to address 5555 Load data Din to programmed- address Pause 50 S Exit µ Notes for software program code: Data Format: DQ15 −DQ8: Don't Care; DQ7-DQ0 (Hex) Address Format: A14 −A0 (Hex) *It is not allowed to assert read command during the 4-word command sequence(program). To assert the read command during the 4-word command sequence will abort programming procedure. |
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