CHAPTER 14: External Bus Interface
FM4 Peripheral Manual, Doc. No. 002-04856 Rev. *E 771
3.3.2 Write (Auto Program) Access
Figure 3-7 shows the flowchart of the write (auto program) access.
Figure 3-7 Write (Auto Program) Access Flowchart
MNCLE is asserted/de-asserted.
Issue a write command 0x80 (Base+0x1000)
Issue an address (Base+0x2000)
Clear MNALE (optional value) (Base+0x3000)
Status read (Base+0x0000)
Issue a page program command 0x10 (Base+0x1000)
Issue a status read command 0x70 (Base+0x1000)
The corresponding chip select signal is fixed to L.
Accesses to other devices (SRAM) are available
during this period (a few s)
Single page data write (Base+0x0000)