Altera Cyclone III LS FPGA Development Board Manuale Utente Scaricare il pdf (Pagina 34)

2–26 Chapter 2: Board Components

General User Input/Output

Cyclone III LS FPGA Development Board Reference Manual © October 2009 Altera Corporation

Table 2–30 shows the LCD pin definitions, and is an excerpt from the Lumex data

sheet.

f For more information such as timing, character maps, interface guidelines, and other

related documentation, visit www.lumex.com.

Table 2–29. LCD Pin Assignments, Schematic Signal Names, and Functions

Board

Reference Description

Schematic Signal

Name

I/O

Standard

Cyclone III LS

Device

Pin Number

J19.4 LCD chip select (LCD_CSn) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[65]

2.5-V

P1

J19.11 LCD data bus bit 4 (LCD_DATA4) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[66] AE4

J19.5 LCD write enable (LCD_WEn) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[67] J4

J19.14 LCD data bus bit 7 (LCD_DATA7) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[68] AE1

J19.12 LCD data bus bit 5 (LCD_DATA5) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[69] AF1

J19.13 LCD data bus bit 6 (LCD_DATA6) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[70] AD2

J19.4 LCD data or command select (LCD_D_Cn) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[71] L1

J19.7 LCD data bus bit 0 (LCD_DATA0) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[72] V5

J19.8 LCD data bus bit 1 (LCD_DATA1) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[73] W4

J19.10 LCD data bus bit 3 (LCD_DATA3) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[74] W6

J19.9 LCD data bus bit 2 (LCD_DATA2) when

LCD_HSMB_SEL is set to a logic 0.

LCD_HSMB_D[75] W7

J18 To control the LCD via the FPGA, a shunt should

be placed on this jumper, or the FPGA must drive

a logic 0.

LCD_HSMB_SEL

1.8-V

D20

Table 2–30. LCD Pin Definitions and Functions (Part 1 of 2)

Pin

Number Symbol Level Function

1V

DD

— Power supply 5 V

2V

SS

—GND (0 V)

3V

0

— For LCD drive

4 RS H/L Register select signal

H: Data input

L: Instruction input

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 57 58

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