![]() ![]() Power supply, such as the display on a printer. Relying on this internal reset may be satisfactory for an LCD module that is part of a system that also includes the Do you think they are met by your wall wart? Here are those power supply specifications. Specification the datasheet recommends using "Initializing by Instruction". ![]() In cases where the power supply cannot be guaranteed to meet those States that this technique will fail if the power supply does not meet certain specifications, specifications thatĪre buried elsewhere in the datasheet. This means that two of the four steps that were automatically performed are going toīut that is NOT the main reason that this technique should be avoided. If you look at the result of this automatic initialization you will see that the controller is configured forĪ 1-line display when in fact the majority of LCD modules should be configured for a 2-line display. Perhaps they are seduced by the first sentence with the promise of 'automatic' initialization. The 'Internal Reset' technique described above is relied upon by many programmers but, in my opinion, this is notĪ wise choice. This is the datasheet information regarding Initialization of the LCD controller. The information in this section relates to Character based LCD modules, specifically those controlled by an HD44780 or equivalent. ![]()
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