TOSHIBA CONFIDENTIAL TH58NVG7D2GTA20
(13) Failure phenomena for Program and Erase operations
The device may fail during a Program or Erase operation.
The following possible failure modes should be considered when implementing a highly reliable system.
Random Programming Failure
Bit “1 to 0”
DETECTION AND COUNTERMEASURE SEQUENCE
Status Read after Erase Block Replacement
Status Read after Program Block Replacement
When an error happens in Block A, try to reprogram the
data into another Block (Block B) by loading from an
external buffer. Then, prevent further system accesses
to Block A ( by creating a bad block table or by using
another appropriate scheme).
When an error occurs during an Erase operation, prevent future accesses to this bad block
(again by creating a table within the system or by using another appropriate scheme).
(14) Do not turn off the power before write/erase operation is complete. Avoid using the device when the battery
is low. Power shortage and/or power failure before write/erase operation is complete will cause loss of data
and/or damage to data.
(15) If FF reset command is input before completion of write operation to page B, it may cause damage to data
not only to the programmed page, but also to the adjacent page A. Regarding page A and B, please see Page