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MX29LV002CTTC-90G Datasheet(PDF) 11 Page - Macronix International |
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MX29LV002CTTC-90G Datasheet(HTML) 11 Page - Macronix International |
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11 / 58 page  11 P/N:PM1204 MX29LV002C/002NC T/B REV. 1.0, JUN. 30, 2005 (no erase verification command is required). Sector erase is a six-bus cycle operation. There are two "unlock" write cycles. These are followed by writing the set-up com- mand 80H. Two more "unlock" write cycles are then fol- lowed by the sector erase command 30H. The sector address is latched on the falling edge of WE# or CE#, whichever happens later, while the command (data) is latched on the rising edge of WE# or CE#, whichever happens first. Sector addresses selected are loaded into internal register on the sixth falling edge of WE# or CE#, whichever happens later. Each successive sector load cycle started by the falling edge of WE# or CE#, whichever happens later must begin within 50us from the rising edge of the preceding WE# or CE#, whichever happens first. Otherwise, the loading period ends and internal auto sector erase cycle starts. (Monitor Q3 to determine if the sector erase timer window is still open, see section Q3, Sector Erase Timer.) Any command other than Sector Erase(30H) or Erase Suspend(B0H) during the time-out period resets the device to read mode. SECTOR ERASE COMMANDS The Automatic Sector Erase does not require the de- vice to be entirely pre-programmed prior to executing the Automatic Sector Erase Set-up command and Au- tomatic Sector Erase command. Upon executing the Automatic Sector Erase command, the device will auto- matically program and verify the sector(s) memory for an all-zero data pattern. The system is not required to provide any control or timing during these operations. When the sector(s) is automatically verified to contain an all-zero pattern, a self-timed sector erase and verify begin. The erase and verify operations are complete when the data on Q7 is "1" and the data on Q6 stops toggling for two consecutive read cycles, at which time the device returns to the Read mode. The system is not required to provide any control or timing during these operations. When using the Automatic sector Erase algorithm, note that the erase automatically terminates when adequate erase margin has been achieved for the memory array Status Q7 Q6 Q5 Q3 Q2 RY/BY# (Note1) (Note2) Byte Program in Auto Program Algorithm Q7# Toggle 0 N/A No 0 Toggle Auto Erase Algorithm 0 Toggle 0 1 Toggle 0 Erase Suspend Read 1 No 0 N/A Toggle 1 (Erase Suspended Sector) Toggle In Progress Erase Suspended Mode Erase Suspend Read Data Data Data Data Data 1 (Non-Erase Suspended Sector) Erase Suspend Program Q7# Toggle 0 N/A N/A 0 Byte Program in Auto Program Algorithm Q7# Toggle 1 N/A No 0 Toggle Exceeded Time Limits Auto Erase Algorithm 0 Toggle 1 1 Toggle 0 Erase Suspend Program Q7# Toggle 1 N/A N/A 0 Table 7. Write Operation Status Note: 1. Q7 and Q2 require a valid address when reading status information. Refer to the appropriate subsection for further details. 2. Q5 switches to '1' when an Auto Program or Auto Erase operation has exceeded the maximum timing limits. See "Q5:Exceeded Timing Limits " for more information. |
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