Fujitsu FR81S User Manual
CHAPTER 45: FLASH MEMORY
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : FLASH MEMORY
FUJITSU SEMICONDUCTOR CONFIDENTIAL
46
5.9. Security Function
The security function is shown below.
This flash memory is equipped with a security function. When the security function is off, the flash memory
can be used without limits. However, when the security function is on, the operation after an instruction
fetches from the external bus, and writes and erases other than chip erase are suppressed. See "5.9.4 Flash
Access Restrictions When Security is ON" for details on the restrictions.
MB91520 Series
MN705-00010-1v0-E
1967