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CHAPTER 24 512K-BIT FLASH MEMORY
24.7
Detailed Explanation of Writing to and Erasing Flash
Memory
This section describes each operation procedure of flash memory Read/Reset, Write,
Chip Erase when a command that starts the automatic algorithm is issued.
Detailed Explanation of Flash Memory Write/erase
The flash memory executes the automatic algorithm by issuing a command sequence (see Table 24.5-1 ) for
a write cycle to the bus to perform Read/Reset, Write, or Chip Erase operations. Each bus write cycle must
be performed continuously. In addition, whether the automatic algorithm has terminated can be determined
using the data polling or other function. At normal termination, the flash memory is returned to the read/
reset state.
Each operation of the flash memory is described in the following order:
•
Setting the read/reset state
•
Writing data
•
Erasing all data (erasing chips)
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