The ST7565R is a single-chip dot matrix LCD driver that can be connected directly to a microprocessor bus. 8-bit parallel or 4-line SPI display data sent from the microprocessor is stored in the internal display data RAM and the chip generates a LCD drive signal independent of. The ST7565 is a versatile graphic LCD controller designed to drive monochrome LCD displays. It supports a variety of resolutions, making it suitable for a wide range of applications. The controller is commonly used in embedded systems to display text, graphics, and custom images. This type of LCD in particular has 128x64 pixels, whch appear dark gray on a green-blue background. Thermal grad scillator circuit.