UG534 Datasheet, PDF (54/96 Pages) –

Chapter 1: ML605 Evaluation Board
X-Ref Target - Figure 1-22
LCD_DB7
LCD_DB5
LCD_E
LCD_RS
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.
VCC5
J41
1
2
3
4
NC
5
6
NC
7
8
9
10
11
12
13
14
LCD_DB6
LCD_DB4
NC
NC
LCD_RW
LCD_VEE
SSW-107-01-T-D
32
32
32
2
VCC5
R158
6.81K
1%
R270
0-2K
1/2W
20%
silkscreen:
“LCD Contrast”
Figure 1-22: LCD Header J41 and Contrast Trimpot R270
UG534_22_073109
Table 1-25: LCD Header Connections
U1 FPGA Pin 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
J41 Pin
4
3
2
1
10
11
9
54
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ML605 Hardware User Guide
UG534 (v1.8) October 2, 2012