K9S1208V0M-SSB0 Datasheet, PDF (14/33 Pages) Samsung semiconductor – 64M x 8 Bit SmartMedia Card

K9S1208V0M-SSB0
SmartMedia^TM
System Interface Using CE don’t-care.
For an easier system interface, CE may be inactive during the data-loading or sequential data-reading as shown below. The internal
528byte page registers are utilized as seperate buffers for this operation and the system design gets more flexible. In addition, for
voice or audio applications which use slow cycle time on the order of u-seconds, de-activating CE during the data-loading and read-
ing would provide significant savings in power consumption.
Figure 6. Program Operation with CE don’t-care.
CLE
CE
CE don’t-care
WE
ALE
I/O0~7
80h Start Add.(4Cycle)
Data Input
Data Input
10h
tCS
tCH
CE
tWP
WE
CE
RE
I/O0~7
tCEA
tREA
out
Figure 7. Read Operation with CE don’t-care.
CLE
CE
RE
ALE
R/B
Must be held
low during tR.
tR
WE
I/O0~7
00h
Start Add.(4Cycle)
CE don’t-care
Data Output(sequential)
14