Specifications

EPSON 5–21
SED1225 Series
SED1225
Series
Character Generator RAM (CGRAM)
The SED1225 has a built-in CGRAM to program user-
defined character patterns for highly flexible signal and
character display.
Issue the System Setup command to use the CGRAM.
The CGRAM has the 160-bit storage capacity, and it can
store up to four 5×8-dot character patterns.
The following provides the relationship between CGRAM
character patterns and CGRAM addresses and character
codes.
The 5×8-dot character size can also be set. To do so, use the *7H and *FH RAM addresses. However, the *7H and *FH
data is reversed if the underbar cursor is used.
CGRAM Data
D7 D0 SEG SEGS
1 2 4 5
Character Display
RAM
Address
Character
Code
0
1
00H to 07H00H
08H to 0FH01H
2
3
4
5
7
8
9
A
B
C
D
F
0✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
✽✽✽
1
1
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
0
0
0
0
0
1
1
1
1
0
1
0
0
1
0
0
0
1
1
1
1
1
1
0
1
0
0
1
0
0
0
0
0
1
1
1
1
0
1
0
0
1
1
1
611110
0
0
0
0
0
0
E11111
1
0
D7 to D5: Un used
D4 to D0: Character data (1 for display; 0 for no display)
Signal Display