Fujitsu F2MC-8FX Hardware Manual page 541

CHAPTER 28 256-KBIT FLASH MEMORY
Notes on Issuing Commands
Pay attention to the following points when issuing commands in the command sequence table:
The upper address U bits (bits 15 to 12) used when commands are issued must have the same value as RA
and PA, from the first command on.
If the above measures are not followed, commands are not recognized normally. Execute a reset to
initialize the command sequencer in the flash memory.
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