Sharp LM161 Series User Manual

Character Code
(DD RAM Data)
CG RAM Address
Character Pattern
(CG RAM Data)
Sample
Character
Pattern
(1)
Cursor
Position
Sample
Character
Pattern
(2)
7
High-order
bit
Low-order
bit
6543210
000011
0000
*
000
000 1101
**
*
*
**
1
001
010
100
101
111
110
001011
000
001
010
100
101
111
110
111
100
101
111
110
001
000
0000
*
001
0000
*
111
High-order
bit
Low-order
bit
543210 7
High-order
bit
Low-order
bit
6543210
00110
00110
10010
01010
00110
00000
11011
001
*
1
**
***
***
***
0
01001
11111
11111
10000
10000
00000
10000
NOTES:
1. Character code bits 0 - 2 correspond to CG RAM address bits
3 - 5. Each of the 8 unique bit strings designates one of the 8
character patterns.
2. CG RAM address bits 0 - 2 designate the row position of each
character pattern. The 8th row is the cursor position. CG RAM
data in the 8th row is OR'ed with the display cursor. Any '1'
bits in the 8th row will result in a displayed dot regardless of the
cursor status (ON/OFF). Accordingly, if the cursor is to be
used, CG RAM data for the 8th row should be set to '0'.
3. CG RAM data bits 0 - 4 correspond to the column position of
each character pattern bit 4 corresponding to the left most
column of the character pattern. CG RAM data bits 5 - 7 are
not used for displaying character patterns, but may be used as
a general purpose RAM area.
4. As shown in tables 4 and 5, character patterns in the CG RAM
are accessed by character codes with bits 4 - 7 equal to '0'. For
example, the character pattern 'R', shown in the first sample
character pattern of the table, is selected by the character code
'00' (HEX) or '08' (HEX), since bit 3 of the character code is a
don't care" bit (i.e., can take either value, '00' or '1').
5. CG RAM data '1' produces a dark dot, and data '0' produces a
light dot in the corresponding position on the display panel.
6.
* = Signifies a "don't care" bit
LCD27-8
Table 6. Relationship Among Character Code
(DD RAM), CG RAM Address, and Character Pattern (CG RAM)
Dot-Matrix LCD Units
10 Display Unit User’s Manual

Sharp LM161 Series Specifications

General

Brand	Sharp
Model	LM161 Series
Category	Monitor
Language	English