RA8835A
Version 1.0
Dot Matrix LCD Controller
Table-24: RAiO LCD Unit Example Parameters
Product name
and resolution
(X ´Y)
fOSC (MHz)
See Note 2.
[FX]
[FY]
[C/R]
TC/R
[FX] = 6 pixels:
256 / 6 = 42
remainder 4 = 4
blank pixels
[C/R] = 42 = 2AH
bytes:
8 or 16, depending
on the screen
256 x 64
512 x 64
256 x 128
C/R = 29H. When
using HDOT SCR,
[C/R] = 43 bytes
[C/R] = 85 = 55H
bytes:
C/R = 54H. When
using HDOT SCR,
[C/R] = 86 bytes
[C/R] = 32 = 20H
bytes:
C/R = 19H. When
using HDOT SCR,
[C/R] = 33 bytes
[C/R] = 102 = 66H
bytes:
C/R = 65H. When
using HDOT SCR,
[C/R] = 103 bytes
2DH
1.85
[FX] = 6 pixels:
512 / 6 = 85
remainder 2 = 2
blank pixels
8 or 16, depending
on the screen
58H
22H
69H
3.59
2.90
8.55
[FX] = 8 pixels:
256 / 8 = 32
remainder 0 = no
blank pixels
8 or 16, depending
on the screen
[FX] = 10 pixels:
512 / 10 = 51
remainder 2 = 2
blank pixels
8 or 16, depending
on the screen
512 x 128
Notes:
1. The remainder pixels on the right-hand side of the display are automatically blanked by the
RA8835A. There is no need to zero the display memory corresponding to these pixels.
2. Assuming a frame frequency of 60 Hz.
RAiO TECHNOLOGY INC.
www.raio.com.tw
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