D2IO - LCD

5x8

5x8

5x8

KS0066 Samsung controller

•204 5x8 Characters

•32 5x11 Characters

•8 8x5 User Defined Characters

•80 Character Code RAM

DDRAM

0x00 ….

….

0x27

0x40 0x67

Initialization

Initialization Parameters

Page 4 of D2IO manual

Characters

• 0x00 through 0x7F are standard ASCII characters

• Higher values map to extended characters

How to Instantiate

• UCF File– NET "lcd_rw_n" LOC = "P34" ;– NET "lcd_rs" LOC = "P33" ;– NET "lcd_e" LOC = "P36" ;– NET "lcd_data<7>" LOC = "P46" ;– NET "lcd_data<6>" LOC = "P47" ;– NET "lcd_data<5>" LOC = "P44" ;– NET "lcd_data<4>" LOC = "P45" ;– NET "lcd_data<3>" LOC = "P42" ;– NET "lcd_data<2>" LOC = "P43" ;– NET "lcd_data<1>" LOC = "P37" ;– NET "lcd_data<0>" LOC = "P31" ;

After initialization

• Perform command or instruction

• Read busy flag

• Wait for busy flag to go low