East Rising 5" LCD with RA8875, Touch, Fonts, Flash and SD-card
The 5" LCD screen from East Rising is an all-in-one screen module with touch, flash and SD-card. The LCD controller RA8875 provides all the graphic primitives, includes internal fonts and even manages external fonts stored in the flash memory.
The screen module is available in a wide range a interfaces, including I²C, SPI and parallel, both 8080 and 6800. The SD-card offers two options, SD or SPI.
The configuration of the screen is done when placing the order but can be change afterwards by removing and adding shunts and resistors.
The reviewed screen uses one SPI connection for the screen and another SPI connection for the microSD-card. However, the whole screen can be controlled through one single SPI port.
A similar screen features the SSD1963 controller instead.
The RA8875 controller from Raio includes a large set of advanced features:
Those features bring two main advantages:
I faced some imitations with this controller on this screen. Displaying a bit-map is relatively slow and some basic features are surprisingly missing.
For example, the controller doesn't allow caching on the memory —reading an area from the screen and saving it to the flash, for later refreshing of the display—, even if a large optional flash is directly connected to and managed by the controller, alas only on read mode.
The LCD_screen Library Suite adds support for this screen and leverages all the powerful features of the controller.