Epson Research and Development Page 11
Vancouver Design Center
Hardware Functional Specification S1D13504
Issue Date: 01/01/30 X19A-A-002-18
1 Introduction
1.1 Scope
This is the Functional Specification for the S1D13504 Series Color Graphics LCD/CRT Controller
Chip. Included in this document are timing diagrams, AC and DC characteristics, register descrip-
tions, and power management descriptions. This document is intended for two audiences: Video
Subsystem Designers and Software Developers.
1.2 Overview Description
The S1D13504 is a low cost, low power color/monochrome LCD/CRT controller interfacing to a
wide range of CPUs and LCDs. The S1D13504 architecture is designed to meet the requirements of
embedded markets such as Office Automation equipment, Mobile Communications devices and
Hand-Held PCs where Windows CE may serve as a primary operating system.
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 LCD panels, up to 4096 colors
on passive color LCDs, and 64K colors on active matrix TFT LCD panels. CRT support is handled
through the use of an external RAMDAC interface allowing simultaneous display of both the CRT
and LCD panel. A 16-bit memory interface supports up to 2M bytes of FPM-DRAM or EDO-
DRAM. Flexible operating voltages from 2.7V to 5.5V provide for very low power consumption.