ra8835 Topway Display, ra8835 Datasheet - Page 42

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

RAiO TECHNOLOGY INC.
Version 1.7
7-11 Cursor Control
7-11-1 Cursor Register Function
VCE
￠
VA
0
Note: The divider adjustment interval (R) applies to both the upper and lower screens even if
W/S = 1. In this case, LP is active only at the end of the lower screen’s display interval.
The RA8835 series cursor address register functions as both the displayed cursor position
address register and the display memory access address register. When accessing display
memory outside the actual screen memory, the address register must be saved before accessing
the memory and restored after memory access is complete.
Frame
period
Character read interal
Figure 7-16: Relationship Between TC/R and C/R
Figure 7-15: Display Memory Basic Read Cycle
T0
Cursor register
Figure 7-17: Cursor Addressing
Graphics read interal
Display read cycle interal
Line 1
(L/F)
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LP
T1
2
3
address register
address pointer
Cursor display
Display period
TC/R
C/R
Graphics generator
‧
‧
‧
‧
0
0
0
0
read interal
T2
Divider frequency
Dot Matrix LCD Controller
period
R
R
R
R
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RA8835