Fujitsu FR81S User Manual
CHAPTER 46: WORKFLASH MEMORY
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : WORKFLASH MEMORY
FUJITSU SEMICONDUCTOR CONFIDENTIAL
14
5.1. Access Mode Setting
Access mode setting is shown below.
The flash memory in this series has the following three modes. Methods of setting the modes (1) and (2) are
explained in this section. As for the mode (3), see the instruction manual of the ROM writer you are using
for details.
(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
1985