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Section 25 NAND Flash Memory Controller
Page 1330 of 2108 R01UH0134EJ0400 Rev. 4.00
Sep 24, 2014
SH7262 Group, SH7264 Group
(2) Continuous Sector Access
A series of sectors can be read or written by specifying the start sector address of NAND-type
flash memory and the number of sectors to be transferred. Figure 25.12 shows an example of
physical sector specification register and transfer count specification register settings when
transferring logical sectors 0 to 40, which are not contiguous because of an unusable sector in
NAND-type flash memory.
00 12
0
0
11 11
12
13
13
40
40
300
12
300 1
13
28
Physical
sector
Values specified in registers by the CPU.
Physical sector
specification
Sector transfer count
specification
Sector 0 to sector 11 are transferred
Sector 12 is transferred
Sector 13 to sector 40 are transferred
Logical
sector
Transfer start
Transfer start
Transfer start
(ADR[17:0] in FLADR)
(SCTCNT in FLCMDCR)
Figure 25.12 Sector Access when Unusable Sector Exists in Continuous Sectors