ML365 Virtex-II Pro QDR II SRAM Mem. Board
www.xilinx.com
19
UG066 (v1.0) June 29, 2004
1-800-255-7778
Block Descriptions
R
Display Commands
provides display commands or instruction code for the LCD. Refer to the Table
Notes for additional information.
Table 2-8:
LCD Write Timing Parameters
Item
Symbol
Standard
Unit
Minimum
Maximum
Enable cycle time
t
CYC
E
500
ns
Enable pause width / High Level
PW
EH
230
ns
Enable rise and fall time
t
ER
, t
EF
20
ns
Address setup time / RS, R/W - E
t
AS
40
ns
Address hold time
t
AH
10
ns
Data setup time
t
DSW
80
ns
Data hold time
t
H
10
ns
Table 2-9:
Instruction Code
Instruction
Code
Description
(Notes 2 and 3)
Maximum
Execution
Time
(Note 1)
RS R/W DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Clear
Display
0
0
0
0
0
0
0
0
0
1
Clears entire display and sets
Data Display RAM (DDR)
address 0 in the address
counter.
82
µ
s -
1.64 ms
Return
Home
0
0
0
0
0
0
0
0
1
*
Sets DDR address 0 in the
address counter. Also returns
display being shifted to
original position. DDR
contents remain unchanged.
40
µ
s -
1.6 ms
Entry
Mode
Set
0
0
0
0
0
0
0
1
I/D
S
Sets cursor move direction
and specifies shift of display.
These operations are
performed during data write
and read.
40
µ
s –
1.64 ms
Display
On/Off
Control
0
0
0
0
0
0
1
D
C
B
Sets ON/OFF of entire
display (D), cursor ON/OFF
(C), and blink of cursor
position character (B).
40
µ
s
Product Not Recommended for New Designs