Page 8 Epson Research and Development
Vancouver Design Center
S5U13504-D9000 Evaluation Board User Manual
X19A-G-003-05 Issue Date: 01/02/02
2 Features
S1D13504 color graphics LCD / CRT controller.
On-board 2M byte EDO-DRAM display buffer.
4/8-bit monochrome LCD interface.
4/8/16-bit color LCD interface.
Single-panel / single-drive displays.
Dual-panel / dual-drive displays.
9/12-bit TFT.
18/24-bit TFT support to 64K colors (16-bit data).
CRT support.
On-board adjustable LCD BIAS voltage power supply.
SmallTypeZ x 2 form factor (requires two side-by-side SmallTypeZ slots).

2.1 S1D13504 Color Graphics LCD Controller

The S1D13504 is a low cost, low power color/monochrome LCD/CRT controller capable of inter-
facing to a wide range of CPUs and LCD displa ys.
The S1D13504 supports LCD interfaces with data widths up to 16 bits. Using Frame Rate
Modulation (FRM), it can display 16 shades of gray on monochrome panels, up to 4096 colors on
passive panels and 64K colors on active matrix TFTs. CRT support is handled through the use of an
external RAMDAC allowing simultaneous display of both the CRT and LCD displays.
In this design, the S1D13504 has a 3.3V core voltage (Core VDD) and a 3.3V IO voltage (IO VDD).
For complete details on register functionality and programming, refer to the S1D13504 Hardware
Functional Specification document number X19A-A-002-xx, and the Programming Notes and
Examples, document number X19A-G-002-xx.

2.1.1 Display Buffer

The S1D13504 supports a 512K byte or 2M byte, FPM-DRAM or EDO-DRAM display buffer. On
the S5U13504-D9000 evaluation board, a 1Mx16 EDO-DRAM is used to provide adequate memory
for all supported display resolutions, and when smaller display sizes are used, to provide multiple
pages of memory. EDO-DRAM with self-refresh may also be used to provide the lowest possible
power consumption during power save modes.