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ML365 Virtex-II Pro QDR II SRAM Mem. Board
1-800-255-7778
UG066 (v1.0) June 29, 2004
Chapter 2:
Architecture
R
Liquid Crystal Display
The Seiko L167100J000 Liquid Crystal Display (LCD) is a 5V, 1-line X16 character display
without a backlight. The LCD is connected to the PCB using two rows of 1 x 16 pin SIP
headers placed 31 mm. apart. The LCD interfaces uses bank 5 of the FPGA. The LCD pin
descriptions and FPGA pinouts are listed in
The information needed to control the LCD panel is provided in the following figures and
tables.
shows the LCD write timing diagram, and
lists the LCD write
timing parameters.
shows the instruction codes for the LCD.
shows the Display
Initialization Sequence, and
, the LCD panel character set. For complete
information, refer to the manufacturer’s data sheet.
Write Cycle for the LCD
Reading from the LCD panel memory is not implemented on this demonstration board.
Table 2-7:
LCD Pin Descriptions and PFGA Connections
Symbol
Function
FPGA Pin #
V
SS
Power supply (GND)
N/A
V
DD
Power supply (+5V)
N/A
V
O
Contrast adjustment
N/A
RS
Register selection
AF22
R/W
Read / Write selection
AG22
E
Read / Write enable
AE22
DB (0-7)
Data bus
AF25 (DB0), AL28, AM28, AE24,
AF24, AG25, AH25, AK27 (DB7)
Figure 2-2:
LCD Write Timing Diagram
RS
R / W
E
DB[7:0]
tAS
tER
tEF
tDSW
tH
tCYCE
tAH
PWEH
ug066_c2_02_060704
Product Not Recommended for New Designs