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Epson Research and Development
Vancouver Design Center
SED1352
LCD Panel Options / Memory Requirements
X16-AN-005-07
Issue Date: 98/10/08
3.2 16-bit Display Memory Interface
Since 35.7K bytes with at least 283ns access time SRAM is required, two 32K bytes SRAM with 120ns access time are
used for this example.
Figure 2: 16-Bit Memory Configuration Example
3.2.1 Configuration options
VD0 = no pull-up resistor for 8-bit bus interface or
VD0 = pull-up (with a 10K resistor) for 16-bit bus interface.
Other option settings are not related to this implementation.
UD0
-3
LD
0
-3
YD
LP
XS
C
L
WF
VD0-15
VA0-14
D0-7
D0-7
VCS0#
VCS1#
VOE#
VWE#
A0-14
CS
OE
WE
A0-14
CS
OE
WE
12MHz
OSC1
640x240 Panel
SED1352
32KB
32KB
SRM20256-12
VD0-7
VD8-15
SRM20256-12