Serial Enabled LCD Backpack

The serial enabled LCD backpack allows you to control a parallel based LCD over a single-wire serial interface. The SerLCD backpack takes care of all the HD44780 commands allowing seamless integration with any micro that can communicate over a wide range of TTL serial baud rates. The SerLCD currently supports 16 and 20 character wide screens with 2 or 4 lines of display.

Communication with SerLCD requires 5V TTL serial at a default baud rate of 9600bps (8-N-1). You can adjust the baud to any standard rate between 2400 and 38400bps. The power, ground and RX pins are all broken out to a 3.5mm pitch screw terminal.

SerLCD has the ability to dim the backlight to conserve power if needed. There is also a potentiometer on the backpack to adjust the contrast.

Features

New PIC 16F688 utilizes onboard UART for greater communication accuracy
Adjustable baud rates of 2400, 4800, 9600 (default), 14400, 19200 and 38400
Operational Backspace
Greater processing speed at 10MHz
Incoming buffer stores up to 80 characters
Backlight transistor can handle up to 1A
Pulse width modulation of backlight allows direct control of backlight brightness and current consumption
All surface mount design allows a backpack that is half the size of the original
Faster boot-up time
Boot-up display can be turned on/off via firmware
User definable splash screen

Documents

• Schematic
• Eagle Files
• SerLCD v2.5 Datasheet
• SerLCD Pin Assignment
• SerLCD-v2.zip source code

Dimensions: 0.56" x 1.75"