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CHAPTER 25 DUAL OPERATION FLASH MEMORY
25.8 Registers
■ Flash Memory Sector Write Control Register 0 (SWRE0) Setup Flow Chart
Set the FSR:WRE bit to "1" to enable Flash memory programming, then enable or disable
programming data into a sector by setting the corresponding bit in the SWRE0 register to "1"
or "0" respectively.
Figure 25.8-13 Sample Procedure for Enabling/Disabling Flash Memory Programming
Program error
574
Start of programming
FSR:WRE
Enable Flash memory programming.
SWRE0
Enable/disable programming data to a sector.
(Write "0" to disable programming data or "1" to enable
programming data to a sector)
Programming command sequence
(1) 0xUAAA ← 0xAA
(2) 0xU554 ← 0x55
(3) 0xUAAA ← 0xA0
(4) Program address ← Program data
Read internal address.
Data polling
(DQ7)
Data
0
Execution timeout
(DQ5)
1
Read internal address.
Data
Data polling
(DQ7)
Data
Last address?
FSR:WRE
Disable Flash memory programming.
End of programming
FUJITSU SEMICONDUCTOR LIMITED
Data
NO
YES
MB95630H Series
Next address
MN702-00009-1v0-E
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