Download CET360 MICROPROCESSOR ENGINEERING µTerm LCDC

CET360 Microprocessor Engineering
LCDC Guide v.2.6
1. Introduction
As described previously, our microterm project will use an LCD Controller (LCDC) as shown in
figure 1. The particular LCDC IC we are using is the RAiO RA8835 as implemented by Topway
on their TCB1335 controller board. The RA8835 is the modern version of the 1330/1335 series
of LCDC ICs made by Epson/Seiko, S-MOS, etc. that were popular in the 1990s.
Fig. 1: Topway TCB1335 LCD Controller Board
The RA8835 is a programmable controller IC with the following features:
• can accommodate monochrome LCD panels with resolutions up to 640x256 pixels
• supports text, graphics, and combined modes
• built-in character generator ROM and support for user-defined character generation (both
RAM- and ROM-based)
• programmable cursor control
• industry-standard 8-bit microprocessor interfaces (Intel 8080 and Motorola 6800 modes)
• 60-pin quad flat package (QFP)
• 2.7V to 5.5V operating supply
Features of the Topway TCB1335 controller board include:
• on-board LCDC IC oscillator (X1)
• on-board 32 KB SRAM display memory (U1)
• 5.0±0.5V operation, 13mA typ.
• on-board DC-DC converter to generate VEE (-20V) required for LCD panel
• 20-pin MCU interface (K2)
• 16-pin LCD panel interface (K3)
We will also be using the LM2028 LCD panel as the display with the following features:
• 320hx240v pixels
• 3~5.5V operation, 3.5mA typ.
• direct interface to K3 on TCB1335
• LED backlight built-in (3.5V @ 300mA)
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