NT7605
Interface to LCD
(1) Character Font and Number of Lines
The NT7605 provides a 5 X 7 dot character font 1-line mode, a 5 X 10 dot character font 1-line mode and a
5 X 7 dot character font 2-line mode, as shown in the table below.
Three types of common signals are available as displayed in the table. The number of lines and the font type can be selected by
the program.
Number of Lines
1
1
2
Character Font
5 X 7 dots + Cursor
(or 5 X 8 dots)
5 X 10 dots + Cursor
5 X 7 dots + Cursor
(or 5 X 8 dots)
Number of Common Signals Duty Factor
8
1/8
11
1/11
16
1/16
Bias
1/4
1/4
1/5
(2) Connection to LCD
The following 4 LCD connection examples show the various combinations between characters and lines.
NT7605 can directly drive the following combinations:
(a) 5 X 8 Font – 20 characters X 1 line (1/8 duty cycle, 1/4 bias)
COM1
LCD PANEL
COM8
SEG1
NT7605
SEG100
15