HY27US08121M Datasheet, PDF (37/43 Pages) Hynix Semiconductor – 512Mbit (64Mx8bit / 32Mx16bit) NAND Flash

HY27SS(08/16)121M Series
HY27US(08/16)121M Series
512Mbit (64Mx8bit / 32Mx16bit) NAND Flash
System Interface Using CE don’t care
To simplify system interface, CE may be deasserted during data loading or sequential data-reading as shown below. So, it is possible
to connect NAND Flash to a microprocessor. The only function that was removed from standard NAND Flash to make CE don't care
read operation was disabling of the automatic sequential read function.
CLE
CE don't-care
CE
WE
ALE
I/Ox
80h
Start Add(4Cycle)
Data Input
Data Input
10h
Figure 32. Program Operation with CE don’t-care.
CLE
If sequential row read enabled,
CE must be held low during tR.
CE
CE don't-care
RE
ALE
R/B
tR
WE
I/Ox
00h
Start Add(4Cycle)
Data Output(sequential)
Figure 33. Read Operation with CE don’t-care.
Rev 0.6 / Oct. 2004
37