Renesas SH7781 用户手册

27.   NAND Flash Memory Controller (FLCTL) 

Rev.1.00  Jan. 10, 2008  Page 1364 of 1658 
REJ09B0261-0100 

 

Two operating modes are supported. 

•  Command access mode 
•  Sector access mode 

 

Command access mode is a mode that accesses flash memory by specifying a command to be 
issued to flash memory, address, data, read or write direction, and number of times for the 
registers. In this mode, DMA transfer of input or output data can be performed by using 
FLDTFIFO. 

+ 16 Bytes) 

Figure 27.2 shows an example of reading operation for NAND-type flash memory. In this 
example, the first command is set to H'00, address data length is set to 3 bytes, and the number of 
read bytes is set to 6 bytes in the data counter. 

CLE

ALE

I/O7 to I/O0

R/B

H'00

A2

A1

A3

1

2

3

4

 

WE

RE

5

6

Command stage

Address stage

Data stage