ra8835 Topway Display, ra8835 Datasheet - Page 13

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

RA8835
Version 1.7
Dot Matrix LCD Controller
of the display memory cannot be written to.
6-2-1-3 M1
Select the memory configuration for user-definable characters. The CG RAM codes select one of
the 64 codes shown in figure 7-29.
M1 = 0: No D6 correction.
The CG RAM1 and CG RAM2 address spaces are not contiguous, the CG RAM1 address space is
treated as character generator RAM, and the CG RAM2 address space is treated as character
generator ROM.
M1 = 1: D6 correction.
The CG RAM1 and CG RAM2 address spaces are contiguous and are both treated as character
generator RAM.
6-2-1-4 M2
Select the height of the character bitmaps. Characters more than 16 pixels high can be displayed
by creating a bitmap for each portion of each character and using the RA8835 series graphics
mode to reposition them.
M2 = 0: 8-pixel character height (2716 or equivalent ROM)
M2 = 1: 16-pixel character height (2732 or equivalent ROM)
6-2-1-5 W/S
Select the LCD drive method.
W/S = 0: Single-panel drive
W/S = 1: Dual-panel drive
EI
X
X
driver
driver
YD
Y
LCD
driver
Figure 6-2: Single-panel Display
RAiO TECHNOLOGY INC.
www.raio.com.tw
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