Fujitsu FR81S User Manual
CHAPTER 45: FLASH MEMORY
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : FLASH MEMORY
FUJITSU SEMICONDUCTOR CONFIDENTIAL
25
5.1. Access Mode Setting
The access mode setting is shown below.
The flash memory in this series has the following three modes. The methods for configuring modes (1) and
(2) are explained in this section. See the instruction manual of the ROM writer you are using for details on
(3).
(1) CPU-ROM mode
(CPU accesses flash memory. For only read, Byte/Half-word/Word access)
(2) CPU programming mode
(CPU accesses flash memory. For reading and writing, only Half-word access)
(3) Flash memory mode
(Access to flash memory from external is enabled.)
MB91520 Series
MN705-00010-1v0-E
1946