ra8835 Topway Display, ra8835 Datasheet - Page 64

• Manufacturer Part Number: ra8835
• Description: Dot Matrix Lcd Controller
• Manufacturer: Topway Display

RAiO TECHNOLOGY INC.
Version 1.7
8-2 System Overview
Figure 8-5 shows the RA8835 series in a typical system. The microprocessor issues instructions to the
RA8835 series, and the RA8835 series drives the LCD panel and may have up to 64KB of display
memory. Since all of the LCD control circuits are integrated onto the RA8835 series, few external
components are required to construct a complete medium- resolution liquid crystal display.
◎
SYSTEM
C = 40H
P1 = 30H
P2 = 87H
P3 = 07H
P4 = 27H
P5 = 2FH
P6 = C7H
P7 = 28H
P8 = 00H
SCROLL
C = 44H
P1 = 00H
P2 = 00H
P3 = C8H
P4 = 40H
P5 = 1FH
P6 = C8H
P7 = 80H
P8 = 3EH
P9 = XH
P10 = XH
CSR FORM
C = 5DH
P1 = 07H
P2 = 87H
HDOT SCR
C = 5AH
P1 = 00H
OVLAY
C = 5BH
P1 = 1CH
DISP ON/OFF
C = 59H
P1 = 16H
X = Don’t care
Register
Setup Procedure
SET TC/R calculation
f
f
(1/6) x 9 x [TC/R] x 200 = 1/70
OSC
FR
[TC/R] = 48, so TC/R = 2FH
= 70 Hz
= 6 MHz
64/86
Dot Matrix LCD Controller
www.raio.com.tw
RA8835