S1D13700 Epson Electronics America, Inc., S1D13700 Datasheet - Page 46

• Manufacturer Part Number: S1D13700
• Description: LCD Controller ICs
• Manufacturer: Epson Electronics America, Inc.

DISPLAY CONTROL FUNCTIONS
9. DISPLAY CONTROL FUNCTIONS
9.1. Character Configuration
The origin of each character bitmap is in the top left
corner as shown in Figure 29. Adjacent bits in each byte
are horizontally adjacent in the corresponding character
image.
If the area outside the character bitmap contains only
zeros, the displayed character size can easily be increased
by increasing FX and FY, as the zeros ensure that the
extra space between displayed characters is blank.
40
Character starting point
FY
Figure 26. Example of character display ([FX]
Character width
FX
Space
Character
Space
height
EPSON
R0
R1
R2
R3
R4
R5
R6
R7
R8
R9
R10
R11
R12
R13
R14
R15
Although the size of the bitmap is fixed by the character
generator, the actual displayed size of the character field
can be varied in both dimensions.
The displayed character width can be set to any value up
to 16 even if each horizontal row of the bitmap is two
bytes wide.
D7
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
8) and generator bitmap
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
to
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Space
data
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
D0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
S1D13305 Series
Technical Manual
Space
data