Lcd Character Display (16 X 2) - Xilinx VC707 User Manual

LCD Character Display (16 x 2)

[Figure
A 2-line by 16-character display is provided on the VC707 board
X-Ref Target - Figure 1-19
The character display runs at 5.0V and is connected to the FPGA's 1.8V HP bank 15
through a TI TXS0108E 8-bit bidirectional voltage level translator (U33).
the LCD interface circuit.
X-Ref Target - Figure 1-20
VCC1V5_FPGA
C53
0.1μF 25V
X5R
GND
2
LCD_E_LS
1
LCD_RW_LS 3
LCD_DB4_LS 4
LCD_DB5_LS
5
LCD_DB6_LS 6
LCD_DB7_LS
7
LCD_RS_LS 8
NC 9
10
VC707 Evaluation Board
UG885 (v1.4) May 12, 2014
1-2, callout 19]
U33
TXS0108E 8-Bit
Bidirectional
Voltage Level
Translator
19
VCCA VCCB
20
A1 B1
18
A2 B2
17
A3 B3
16
A4 B4
15
A5 B5
14
A6 B6
13
A7 B7
12 NC
A8 B8
11
OE GND
GND
LCD_DB7
LCD_DB5
LCD_E
LCD_RS
GND
Figure 1-20: LCD Interface Circuit
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LCD Display (16 x 2)
Figure 1-19: LCD Display
VCC5V0
C54
0.1μF 25V
X5R
GND
LCD_E
LCD_RW
LCD_DB4
LCD_DB5
LCD_DB6
LCD_DB7
LCD_RS
VCC5V0
J23
1 2 LCD_DB6
3 4 LCD_DB4
NC 5 6 NC
NC 7 8 NC
9 10 LCD_RW
11 12 LCD_VEE
13 14
Feature Descriptions
(Figure 1-19).
UG885_c1_19_020612
Figure 1-20 shows
VCC5V0
R118
6.81kΩ
R232
LCD Contrast
2 kΩ
Potentiometer
GND
UG885_c1_20_020612
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