Lcd Display (16 Character X 2 Lines) - Xilinx ML605 Hardware User's Manual

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.
X-Ref Target - Figure 1-22
LCD_DB7
LCD_DB5
NC
NC
LCD_E
LCD_RS
Table 1-25: LCD Header Connections
U1 FPGA Pin
ML605 Hardware User Guide
UG534 (v1.9) February 26, 2019
Caution!
Care should be taken not to scratch or damage the surface of the LCD window.
J41
1 2
3 4
5 6
7 8
9 10
11 12
13 14
SSW-107-01-T-D
Figure 1-22: LCD Header J41 and Contrast Trimpot R270
Schematic Net Name
AD14 LCD_DB4_LS
AK11 LCD_DB5_LS
AJ11 LCD_DB6_LS
AE12 LCD_DB7_LS
AC14 LCD_RW_LS
T28 LCD_RS_LS
AK12 LCD_E_LS
www.xilinx.com
VCC5
LCD_DB6
LCD_DB4
NC
NC
LCD_RW
LCD_VEE
J41 Pin
4
3
2
1
10
11
9
Detailed Description
VCC5
R158
32
6.81K
32
R270
32
0-2K
1/2W
2
20%
silkscreen:
"LCD Contrast"
UG534_22_073109
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