The GU240X64D-K612A8 is a graphic matrix VFD module integrating VFD glass, VF drivers, a microcontroller, character generation, interface logic and a transformerless DC/DC converter. The interface type is selected via a push-button on the rear of the module. Automatic key scanning and general I/O are available on ports PA0 to PA7 for user control. This Pixel Flexible 600 Series VFD module features selectable 5V logic. A jumper switches the interface to 3.3V or 5V operation. The 600 Series includes an advanced command set, as well as ASCII, European and Cyrillic fonts, with character formats 5x5, 5x7, 7x15 and 10x14. The 240x64 module is also designed for USB interface.