SED1354 Datasheet, PDF (308/472 Pages) Epson Company – Color Graphics LCD/CRT Controller

Page 8
Epson Research and Development
Vancouver Design Center
2 Features
• SED1354 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 SED1354 Color Graphics LCD Controller
The SED1354 is a low cost, low power color/monochrome LCD/CRT controller capable of inter-
facing to a wide range of CPUs and LCD displays.
The SED1354 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 SED1354 has a 3.3V core voltage (Core V_DD) and a 3.3V IO voltage (IO V_DD).
For complete details on register functionality and programming, refer to the SED1354 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 SED1354 supports a 512K byte or 2M byte, FPM-DRAM or EDO-DRAM display buffer. On
the SDU1354-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.
SDU1354-D9000
X19A-G-003-04
Evaluation Board User Manual
Issue Date: 98/10/29