S1D13305D00A EPSON [Epson Company], S1D13305D00A Datasheet - Page 62

• Manufacturer Part Number: S1D13305D00A
• Description: LCD Controller ICs
• Manufacturer: EPSON [Epson Company]

CHARACTER GENERATOR
10.3. Setting the Character Generator Address
The CG RAM addresses in the VRAM address space are
not mapped directly from the address in the SAG register.
The data to be displayed is at a CG RAM address
Table 21. Character fonts, number of lines
Table 22. Character fonts, 9
10.3.1. M1 = 1
The S1D13305 series automatically converts all bits set
in bit 6 of character code for CG RAM 2 to zero. Because
of this, the CG RAM data areas become contiguous in
display memory.
56
SAG
Character code
+ROW select address
CG RAM address
SAG
Character code
+ROW select address
CG RAM address
Note: Lines = 1: lines in the character bitmap 8
Row 14
Row 15
Row 0
Row 1
Row 2
Row 7
Row 8
Row
Figure 45. Row select address
Lines = 2: lines in the character bitmap 9
R3
0
0
0
0
1
1
1
R2
0
0
0
1
0
1
1
R1
0
0
1
1
0
1
1
VA15 VA14 VA13 VA12 VA11 VA10 VA9 VA8 VA7 VA6 VA5 VA4 VA3 VA2 VA1 VA0
VA15 VA14 VA13 VA12 VA11 VA10 VA9 VA8 VA7 VA6 VA5 VA4 VA3 VA2 VA1 VA0
A15 A14 A13 A12 A11 A10
A15 A14 A13 A12 A11 A10
0
0
0
0
number of lines
R0
0
1
0
1
0
0
1
0
0
0
0
Line 1
0
0
0
0
Line 2
0
0
0
0
8 (M2 = 0, M1 = 0)
EPSON
D7
16 (M2 = 1, M1 = 0)
0
0
0
D7
D6
0
0
calculated from SAG + character code + ROW select
address. This mapping is shown in Table 21 and 22.
When writing data to CG RAM:
• Calculate the address as for M1 = 0.
• Change bit 6 of the character code from “1” to “0”.
D6
A9
A9
D5
0
0
A8
D5
D4
A8
0
0
D4
A7
D3
A7
0
0
D3
A6
D2
A6
0
0
D2
A5
D1
A5
0
0
D1
A4
A4
D0
0
0
A3
D0
R3
A3
0
0
A2
R2
R2
A2
S1D13305 Series
Technical Manual
0
0
R1
A1
R1
A1
0
0
R0
A0
R0
A0
0
0