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Universal LCD Module

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Universal LCD Module
Interfacing an LCD to a microcontroller system is daily bread and butter for the average electronics engineer. There are innumerable variants and many circuit suggestions for interfacing the six to seven LCD signals to a microcontroller system. In an effort to prevent continual reinvention of the wheel the author of this design used this simple formula:
(LCD module + Atmel controller) + (a touch of software) = (universal display module)
to design this versatile display unit and PCB.
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Gerber file

CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor Members can exclusively download these files for free as part of their Membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service. Elektor recommends its business partner Eurocircuits as the company of choice for its own prototypes and volume production in selected cases.

Resistors
R1 = see text
Capacitors
C1,C5 = 100nF
C2, C3 = 27pF
C4 = 10µF 16V radial
Semiconductors
D1-D4 = 1N4148
T1 = BS170
IC1 = AT90S2313, order code 050259-41
Miscellaneous
X1 = 11.0592MHz quartz crystal
S1-S16 = pushbutton type D6
LCD module, 2x16 characters
PCBs, ref. 050259-1
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