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MBM29F400TC Datasheet(PDF) 9 Page - SPANSION |
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MBM29F400TC Datasheet(HTML) 9 Page - SPANSION |
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9 / 48 page  MBM29F400TC-55/-70-90/MBM29F400BC-55/-70-90 8 MBM29F400TC/BC Command Definitions Notes: • Address bits A15 to A11 = X = “H” or “L” for all address commands except or Program Address (PA) and Sector Address (SA). • Bus operations are defined in “MBM29F400TC/BC User Bus Operation (BYTE = VIH)” and “MBM29F400TC/BC User Bus Operation (BYTE = VIL)” in sDEVICE BUS OPERATION. • RA = Address of the memory location to be read. PA = Address of the memory location to be programmed. Addresses are latched on the falling edge of the WE pulse. SA = Address of the sector to be erased. The combination of A17, A16, A15, A14, A13, and A12 will uniquely select any sector. • RD = Data read from location RA during read operation. PD = Data to be programmed at location PA. Data is latched on the rising edge of WE. • The system should generate the following address patterns: Word Mode: 555h or 2AAh to addresses A10 to A0 Byte Mode: AAAh or 555h to addresses A10 to A-1 • Both Read/Reset commands are functionally equivalent, resetting the device to the read mode. • Command combinations not described in Command Definitions table are illegal. Command Sequence Bus Write Cycles Req'd First Bus Write Cycle Second Bus Write Cycle Third Bus Write Cycle Fourth Bus Read/Write Cycle Fifth Bus Write Cycle Sixth Bus Write Cycle Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data Read/Reset Word 1 XXXh F0h — — — — — — — — — — Byte Read/Reset Word 3 555h AAh 2AAh 55h 555h F0h RA RD — — — — Byte AAAh 555h AAAh Autoselect Word 3 555h AAh 2AAh 55h 555h 90h —————— Byte AAAh 555h AAAh Program Word 4 555h AAh 2AAh 55h 555h A0h PA PD — — — — Byte AAAh 555h AAAh Chip Erase Word 6 555h AAh 2AAh 55h 555h 80h 555h AAh 2AAh 55h 555h 10h Byte AAAh 555h AAAh AAAh 555h AAAh Sector Erase Word 6 555h AAh 2AAh 55h 555h 80h 555h AAh 2AAh 55h SA 30h Byte AAAh 555h AAAh AAAh 555h Sector Erase Suspend Erase can be suspended during sector erase with Addr (“H” or “L”). Data (B0h) Sector Erase Resume Erase can be resumed after suspend with Addr (“H” or “L”). Data (30h) |
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