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MB90335 Series
Note:
The function of the manufacture code and device code to be read is not provided.
These codes cannot be accessed by any command.
■ Programming and Erasing Flash Memory
• Programming and erasing flash memory in the same bank cannot be performed at the same time.
• When data writing/erasing operation is done to the flash memory, it is possible to write it in the flash
memory by copying the program that exists in the flash memory onto RAM once, and executing the
program copied onto RAM.
• The dual operation flash memory enables program execution in the flash memory and programming
control using interrupts.
It also eliminates the need for a conventional process to download a program to RAM for execution to
program data into the flash memory, resulting in reduced download time and no need to consider power
shutdown for RAM data maintenance.
CM44-10137-6E
FUJITSU MICROELECTRONICS LIMITED
CHAPTER 22 DUAL OPERATION FLASH MEMORY
22.1 Overview of Dual Operation Flash Memory
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