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MBM29F004BC-70PD Datasheet(PDF) 7 Page - SPANSION |
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MBM29F004BC-70PD Datasheet(HTML) 7 Page - SPANSION |
7 / 53 page MBM29F004TC/004BC-70/90 7 s DEVICE BUS OPERATION Table 2 MBM29F004TC/BC User Bus Operations Legend : L = VIL, H = VIH, X = “H” or “L”, = Pulse Input. See DC Characteristics for voltage levels. *1 : Manufacturer and device codes may also be accessed via a command register write sequence. Refer to Table 6. *2 : WE can be VIL if OE is VIL, OE at VIH initiates the write operations. *3 : Refer to the section on Sector Protection. *4 : To activate the command, OE has to be taken to VID. *5 : In case of Command Mode Sector Protect. *6 : In case of Hardware Sector Protect. Operation CE OE WE A0 A1 A6 A9 I/O Auto-Select Manufacturer Code*1 LL H L LL VID Code Auto-Select Device Code*1 LL H H LL VID Code Read*2 LL H A0 A1 A6 A9 DOUT Standby H X X X X X X High-Z Output Disable L H H X X X X High-Z Write (Program/Erase) L H L A0 A1 A6 A9 DIN Enable Sector Protection*3 LVID XXX VID X 3-Byte Sector Unlock Sequence L VID A0 A1 A6 A9 DIN 2-Byte Sector Relock Sequence L VID A0 A1 A6 A9 DIN Command Mode Sector Protect*2 LVID A0 A1 A6 A9 DIN Verify Sector Protect*2, *5 LL H A0 A1 A6 A9 Code Hardware Sector Protect*2 HVID LX XL VID X Verify Sector Protection*2, *6 LL H L H L VID Code Temporary Sector Unprotection*3 LVID A0 A1 A6 A9 DIN |
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