27976 Parallax Inc, 27976 Datasheet - Page 4

• Manufacturer Part Number: 27976
• Description: MODULE SRL LCD 2X16 NON-BACKLIT
• Manufacturer: Parallax Inc

Specifications of 27976

• Display Mode: Transflective
• Interface: Serial
• Display Type: STN - Super-Twisted Nematic
• Number Of Digits/alpha: 32
• Outline L X W X H: 80.00mm x 36.00mm x 21.00mm
• Viewing Area: 61.00mm L x 15.70mm W
• Backlight: Without Backlight
• Display Format: 16 x 2
• Character Format: 5 x 8 Dots
• Voltage - Supply: 5.0V
• Operating Temperature: -20°C ~ 70°C
• Character Count X Line: 16 x 2
• Module Size (w X H X T): 38 mm x 80 mm
• Features: Serial LCD
• Fluid Type: STN Positive
• Voltage Rating: 5 VDC
• Operating Temperature Range: - 20 C to + 70 C
• Backlight Type: LED Yellow-Green
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Dot Size: -
• Character Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Propeller Example Code
Try the following code on your Propeller to send a text string to the LCD display. First, set the baud rate
on your Serial LCD to 19,200. Then, load the code below into your Propeller and load RAM or EEPROM.
You will see the text string show up and wrap to the second line of the display.
In all of your Serial LCD code, you should wait for 100 ms after starting the FullDuplexSerial.spin object,
to give the object and the Serial LCD time to initialize. The FullDuplexSerial.spin object is included with
the Propeller Tool.
{{
Serial_LCD_Demo.spin
For Parallax Serial LCDs 27976, 27977, 27979
}}
CON
OBJ
PUB Main
Moving the Cursor
When you send a character to the Serial LCD, it always displays at the current cursor position. There are
a few different ways to move the cursor on the Serial LCD display. After each character you send, the
cursor automatically moves over one position. Along with this, there is a standard set of cursor move
commands including Backspace, Carriage Return, and Line Feed.
The Backspace/Left command (Dec 8) moves the cursor one place to the left and the Right command
(Dec 9) moves the cursor one place to the right. These can be useful for moving the cursor around to
overwrite existing text. These commands wrap to the next line of the display, if necessary. The Line
Feed command (Dec 10) moves the cursor to the next line of the display without changing the horizontal
position of the cursor. The Carriage Return command (Dec 13) also moves the cursor to the next line,
but it moves the cursor to the leftmost position on that line as well. The Form Feed command (Dec 12)
clears the entire display and moves the cursor to the leftmost position on line 0, just like when you first
turn on the display. You will need to pause for 5mS in your code after sending the Form Feed command,
to give the Serial LCD time to clear the display. Except for Form Feed, none of these move commands
affects the characters on the display.
There are also direct move commands that you can use to move the cursor to any position on the display
with a single command. The commands in the range Dec 128 to 143 and Dec 148 to 163 move the
cursor to the 16 different positions on each of the two lines of the model 27976 and 27977 LCDs. The
commands in the range Dec 128 to 207 move the cursor to the 20 different positions on each of the four
lines of the model 27979 LCD.
Copyright © Parallax Inc.
_clkmode = xtal1 + pll16x
_xinfreq = 5_000_000
TX_PIN
BAUD
LCD
LCD.start(TX_PIN, TX_PIN, %1000, 19_200)
waitcnt(clkfreq / 100 + cnt)
LCD.str(string("Hello, this text will wrap."))
= 0
= 19_200
: "FullDuplexSerial.spin"
Parallax Serial LCDs (#27976, #27977, #27979)
' Pause for FullDuplexSerial.spin to initialize
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