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CHAPTER 19 FLASH MEMORY
19.6.5
Temporary Sector Erase Stop
This section explains how to issue Temporary Sector Erase Stop commands to
temporarily stop a sector erase operation in flash memory. Data can be read from a
sector not being erased by using this command.
■ Temporary Sector Erase Stop
A sector erase operation in flash memory can be stopped temporarily by continuously sending
Temporary Sector Erase Stop commands (listed in the command sequence table) to the target
sector in flash memory.
Data can be read from a sector being erased by using the Temporary Sector Erase Stop
command to temporarily stop the erasure. Data can only be read from the sector; data cannot be
written there. This command is only effective during sector erasure that includes an erase wait
period. It is ignored during chip erase operation and write operation.
A sector erase operation is stopped temporarily by writing a temporary erase stop code (B0
The address where the temporary erase stop code is written should indicate an address in flash
memory. A Temporary Sector Erase Stop command issued during temporary erase stop status is
ignored.
If a Temporary Sector Erase Stop command is entered during a sector erase wait period, the
sector erase wait is immediately canceled and erase operation in progress is stopped. If a
Temporary Sector Erase Stop command is entered during a sector erase operation after the
sector erase wait period elapses, sector erase operation is stopped temporarily after up to 15-µs
elapse.
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