r8a77850anbg Renesas Electronics Corporation., r8a77850anbg Datasheet - Page 1398
r8a77850anbg
Manufacturer Part Number
r8a77850anbg
Description
Renesas 32-bit Risc Microcomputer Superh? Risc Engine Family
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.R8A77850ANBG.pdf
(1692 pages)
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27. NAND Flash Memory Controller (FLCTL)
27.4.3
In sector access mode, flash memory can be read from or written to in sector units by specifying
the number of physical sectors to be accessed.
Since 512-byte data is stored in FLDTFIFO and 16-byte control code is stored in FLECFIFO,
DMA transfer can be performed by setting the DREQ1EN and DREQ0EN bits in FLINTDMACR.
Figure 27.8 shows the relationship of DMA transfer between sectors in flash memory (data and
control code) and memory in the address space.
Rev.1.00 Jan. 10, 2008 Page 1368 of 1658
REJ09B0261-0100
Figure 27.8 Diagram of DMA Transfer between Sector (Data and Control Code) in Flash
Data (512 bytes)
Sector Access Mode
Flash memory
(16 bytes)
Control
code
Memory and Memory in Address Space
FLDTFIFO
FLECFIFO
FLCTL
DMA (channel 0)
transfer
DMA (channel 1)
transfer
Address space (external memory area)
Control code area
Data area
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