Table of Contents
Advertisement
CHAPTER 19 FLASH MEMORY
❍ Temporary sector erase stop operation status
When continuous read access is performed from a sector in temporary erase stop status while
flash memory is in temporary erase stop status and read mode, bit2 toggles. When continuous
read access is performed from a sector not subject to a temporary erase stop operation while
flash memory is in temporary erase stop status and write mode, bit2 becomes "1." Unlike bit2,
bit6 only toggles in normal write and erase operations, or in temporary erase stop status and write
operation.
For example, bit2 and bit6 are used together to detect a temporary erase stop and read mode
(bit2 toggles but bit6 does not). Bit2 is also used to detect sectors that are subject to erase
operations. If data is read from a sector that is subject to an erase operation for the flash memory,
bit2 toggles.
652
Advertisement
Table of Contents
