4.3.3.
OLED Display
OLED1 Xplained Pro features a 128 x 32 pixel white monochrome OLED display,
from WiseChip Semiconductor Inc. The display has a SSD1306 display controller by Solomon Systech
built in and is controlled via a 4-wire SPI int reset with the signals described in the table below.
The datasheets for the display module or the display controller is not publicly available and has to be
acquired from the respective manufacturers.
Info:
Note that the OLED display does not have a SPI MISO signal. That means that data can only
be written to the display, not read.
Table 4-5. OLED Display Connections
Pin on EXT
connector
Signal Name
Description
16
SPI_MOSI
SPI master out, slave in signal. Used to write data to the
display.
18
SPI_SCK
SPI clock signal, generated by the master.
5
DATA_CMD_SEL Data/command select. Used to choose whether the
communication is data to the display memory or a command to
the LCD controller.
15
DISPLAY_SS
SPI slave select signal, must be held low during SPI
communication.
10
DISPLAY_RESET Reset signal to the OLED display, active low. Used during
initialization of the display.
Atmel OLED1 Xplained Pro [USER GUIDE]
Atmel-42077C-OLED1-Xplained-Pro-Hardware_User Guide-03/2016
9
