Specifications

2–28 EPSON Rev. 1.4
S1D12200 Series
Character Generator RAM (CG ROM)
CGRAM contained in S1D12200 Series enables user programming of character patterns for display signals with higher
degrees of freedom.
When using CGRAM, select it using the system command.
Capacity of CGRAM is 160 bits and accepts registration of any 4 5 × 8 dots patterns.
Following shows relationship between the CGRAM characters, CGRAM addresses and character code.
It is possible to set a 5 × 8 character size in this system. In this case, use the
*
7H/
*
FH RAM. Note that the
*
7H/
*
FH data
is inverted when a under-bar cursor is used.
CGRAM data (character pattern)
D7 D0 SEG
SEGS
12 45
Signal displayCharacter display
RAM addressCharacter code
0
1
00H to 07H
10H to 17H
00H
02H
08H to 0FH
18H to 1FH
01H
03H
2
3
4
5
6
7
8
9
A
B
C
D
E
F
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
***
0
1
1
0
0
0
1
0
0
0
0
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
1
1
1
1
0
0
1
0
0
1
0
0
1
0
1
1
1
1
1
1
0
0
1
0
0
1
0
0
1
0
0
0
1
1
1
1
0
0
1
0
0
1
1
1
0
0
0
0
0
0
0
1
0
0
Unused Character data
1: Display
0: Non-display