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S34ML01G200TFI000 Datasheet(PDF) 64 Page - SPANSION |
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S34ML01G200TFI000 Datasheet(HTML) 64 Page - SPANSION |
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64 / 68 page  64 Spansion ® SLC NAND Flash Memory for Embedded S34ML01G2_04G2_01 August 3, 2012 Data Sheet (Adv an ce Inf o r m a t io n) 9. Error Management 9.1 System Bad Block Replacement Over the lifetime of the device, additional Bad Blocks may develop. In this case, each bad block has to be replaced by copying any valid data to a new block. These additional Bad Blocks can be identified whenever a program or erase operation reports “Fail” in the Status Register. The failure of a page program operation does not affect the data in other pages in the same block, thus the block can be replaced by re-programming the current data and copying the rest of the replaced block to an available valid block. Refer to Table 9.1 and Figure 9.1 for the recommended procedure to follow if an error occurs during an operation. Figure 9.1 Bad Block Replacement Notes: 1. An error occurs on Nth page of the Block A during a program operation. 2. Data in Block A is copied to same location in Block B, which is valid block. 3. Nth page of block A, which is in controller buffer memory, is copied into Nth page of Block B. 4. Bad block table should be updated to prevent from erasing or programming Block A. Table 9.1 Block Failure Operation Recommended Procedure Erase Block Replacement Program Block Replacement Read ECC (1 bit / 512+16 byte) Data buffer memory of the controller N page FFh (2) (3) Data FFh Failure (1) th N page th Block A Block B |
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