ML605 Hardware User Guide
55
UG534 (v1.9) February 26, 2019
Detailed Description
LCD Display (16 Character x 2 Lines)
The ML605 board has a 16-character x 2-line LCD (Display Tech S162D BA BC, installed
onto J41 2x7 header) on the board to display text information. Potentiometer R270 adjusts
the contrast of the LCD. A ST2378E (U33) 2.5V-to-5V level-shifter is used to shift the
voltage level between the FPGA and the LCD. The data interface to the LCD is connected
to the FPGA to support 4-bit mode only. The LCD module has a connector that allows the
LCD to be removed from the board to access to the components below it.
Caution!
Care should be taken not to scratch or damage the surface of the LCD window.
X-Ref Target - Figure 1-22
Figure 1-22:
LCD Header J41 and Contrast Trimpot R270
LCD_DB7
LCD_DB5
LCD_E
LCD_R
S
NC
NC
NC
LCD_DB6
LCD_DB4
LCD_RW
LCD_VEE
NC
VCC5
VCC5
SS
W-107-01-T-D
1
J41
2
3
4
5
6
7
8
9
10
11
12
1
3
14
3
2
3
2
3
2
2
1%
s
ilk
s
creen:
“
LCD Contr
as
t
”
R270
0-2K
1/2W
20%
R158
6.81K
1
3
2
1
UG5
3
4_22_07
3
109
Table 1-25:
LCD Header Connections
U1 FPGA Pin
Schematic Net Name
J41 Pin
AD14
LCD_DB4_LS
4
AK11
LCD_DB5_LS
3
AJ11
LCD_DB6_LS
2
AE12
LCD_DB7_LS
1
AC14
LCD_RW_LS
10
T28
LCD_RS_LS
11
AK12
LCD_E_LS
9
