VT12864A is a graphic LCM. It offers high quality with wide operating temperature. So you only need a single 5V working. Specifications: 1) Module size (W x H x T1/T2): 93 x 70 x 9.5/13.5 2) Active area (W x H): 72 x 40mm 3) Number of dots (H x V): 128 x 64 4) Backlight: LED, CCFL 5) LCM tech: COG