27976 Parallax Inc, 27976 Datasheet - Page 6

• 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

For more custom character examples, including an hourglass animation and using the LCD as a bar graph
display, see “Smart Sensors and Applications” which is available for free download. Search “28089” from
www.parallax.com.
Propeller Custom Character Example
Define a custom character using the code example below. 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 a
diamond character appear on the screen. Note: the FullDuplexSerial.spin object is included with the
Propeller Tool software.
{{
Serial_LCD_Custom_Character.spin
For Parallax Serial LCDs 27976, 27977, 27979
}}
CON
OBJ
PUB Main
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.tx(250)
LCD.tx(%00000)
LCD.tx(%00100)
LCD.tx(%01110)
LCD.tx(%11111)
LCD.tx(%01110)
LCD.tx(%00100)
LCD.tx(%00000)
LCD.tx(%00000)
LCD.tx(2)
SEROUT TxPin, Baud19200, [%11111]
SEROUT TxPin, Baud19200, [%01110]
SEROUT TxPin, Baud19200, [%00100]
SEROUT TxPin, Baud19200, [%00000]
SEROUT TxPin, Baud19200, [%00000]
SEROUT TxPin, Baud19200, [2]
= 0
= 19_200
: "FullDuplexSerial.spin"
Parallax Serial LCDs (#27976, #27977, #27979)
' %11111 = * * * * *
' %01110 =
' %00100 =
' %00000 =
' %00000 =
' Display the new custom character 2
' Pause for FullDuplexSerial.spin to initialize
' Define custom character 2
' Now send the eight data bytes
' %00000 =
' %00100 =
' %01110 =
' %11111 = * * * * *
' %01110 =
' %00100 =
' %00000 =
' %00000 =
' Display the new custom character 2
* * *
*
* * *
* * *
*
*
2.1 4/15/2010 Page 6 of 10