More and more applications are requiring liquid crystal displays (LCD) tocommunicate effectively to the outside world. This application notedescribes the hardware and software interface needed to displayinformation from the MC68HC912B32 (B32).Some LCD suppliers provide only the LCD glass so that the waveformsneeded to directly drive the LCD segments have to be generated by themicrocontroller (MCU) or microprocessor (MPU). Other LCD suppliersprovide an LCD module, which has all LCD glass and segment driversprovided in one small packaged circuit board.This application note uses an LCD module from Optrex Corporation, partnumber DMC16207 (207). It utilizes a Hitachi LCD driver, HD44780, toprovide the LCD segment waveforms and a simple parallel port interfacethat easily interfaces to an MCU or MPU bus.
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