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52 www.xilinx.com ML605 Hardware User Guide
UG534 (v1.2.1) January 21, 2010
Chapter 1: ML605 Evaluation Board
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_RS
NC
NC
NC
LCD_DB6
LCD_DB4
LCD_RW
LCD_VEE
NC
VCC5
VCC5
SSW-107-01-T-D
1
J41
2
3 4
56
78
910
11 12
13 14
32
32
32
2
1%
silkscreen:
“LCD Contrast”
R270
0-2K
1/2W
20%
R158
6.81K
13
2
1
UG534_22_073109
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