29121 Parallax Inc, 29121 Datasheet - Page 4

• Manufacturer Part Number: 29121
• Description: MODULE APP: LCD TERMINAL 2X8
• Manufacturer: Parallax Inc

Specifications of 29121

• Display Type: LCD - Monochrome
• Display Mode: Reflective
• Number Of Digits/alpha: 16
• Display Format: 8 x 2
• Character Format: *
• Voltage - Supply: 5.0V
• Interface: Parallel
• Character Count X Line: 8 x 2
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Backlight: -
• Viewing Area: -
• Outline L X W X H: -
• Dot Size: -
• Character Size: -
• Lead Free Status / Rohs Status: Details

E
RW
RS
LcdDirs
LcdBusOut
LcdBusIn
' -----[ Constants ]-------------------------------------------------------
#DEFINE _LcdReady = ($STAMP = BS2P) OR ($STAMP = BS2PE)
LcdCls
LcdHome
LcdCrsrL
LcdCrsrR
LcdDispL
LcdDispR
LcdDDRam
LcdCGRam
LcdLine1
LcdLine2
LcdScrollTm
' -----[ Variables ]-------------------------------------------------------
addr
crsrPos
char
idx
scan
buttons
btnA
btnB
btnC
btnD
btnDemo
' -----[ EEPROM Data ]-----------------------------------------------------
CC0
CC1
Copyright © Parallax, Inc.
PIN
PIN
PIN
VAR
VAR
VAR
CON
CON
CON
CON
CON
CON
CON
CON
CON
CON
CON
VAR
VAR
VAR
VAR
VAR
VAR
VAR
VAR
VAR
VAR
VAR
DATA
DATA
1
2
3
DIRB
OUTB
INB
$01
$02
$10
$14
$18
$1C
$80
$40
$80
$C0
250
Word
Byte
Byte
Byte
Byte
Nib
buttons.BIT0
buttons.BIT1
buttons.BIT2
buttons.BIT3
Byte
$0E, $1F, $1C, $18, $1C, $1F, $0E, $00
$0E, $1F, $1F, $18, $1F, $1F, $0E, $00
LCD Terminal AppMod (#29121)
' LCD Enable (1 = enabled)
' Read/Write\
' Reg Select (1 = char)
' dirs for I/O redirection
' clear the LCD
' move cursor home
' move cursor left
' move cursor right
' shift chars left
' shift chars right
' Display Data RAM control
' Character Generator RAM
' DDRAM address of line 1
' DDRAM address of line 2
' LCD scroll timing (ms)
' address pointer
' cursor position
' character sent to LCD
' loop counter
' loop counter
' left-most button
' right-most
' loop counter
' char 0
' char 1
v1.2 8/1/2008 Page 4 of 9