●Description
OLED B Click is a compact add-on board that lets you add a small but bright and crisp display to your design. This board features the MI9639BO-B2, a 96x39px light blue monochrome passive matrix OLED display from Multi-Inno Technology. The display on OLED B Click board is 19.3x7.8mm with an integrated OLED controller, the SSD1306. This controller has built-in functionalities like contrast control, normal or inverse image display, vertical and horizontal scrolling functions and much more accessible through the I2C serial interface. The display is bright, has a wide viewing angle, and low power consumption. This Click board is suitable for applications where bright and crisp blue text or icons need to be displayed.
OLED B Click is supported by a mikroSDK compliant library, which includes functions that simplify software development.
OLED B Click as its foundation uses the MI9639BO-B2, a 19.3x7.8mm 96x39px light blue monochrome passive matrix OLED display from Multi-Inno Technology. The MI9639BO-B2 display features an SSD1306, a 128x64 dot-matrix OLED/PLED segment/common driver with a controller. The controller has built-in functionalities like contrast control (256-step brightness control), normal or inverse image display, vertical and horizontal scrolling functions, and much more accessible through the I2C serial interface.
OLEDs are emissive and don't require a separate backlight as LCD technology does, reducing the OLED display's overall power consumption compared to LCDs. It also does not suffer from loss of contrast due to bleed-through of the backlight in the "off" pixels. OLEDs, being emissive, have a consistent contrast ratio greater than 100:1 with no limitation in viewing angle. In addition, they don't suffer from temperature-related response time delays and contrast changes.
Like any OLED display, the MI9639BO-B2 is made from a thin film of an organic compound that emits light when exposed to a current. A small monochrome display like this one represents an ideal solution for displaying text or icons. The MI9639BO-B2 display is bright, has a wide viewing angle, and low power consumption.
In addition to the display's main power supply, taken from the +3.3V microBUS power rail, the MI9639BO-B2 has another power pin, more precisely the power supply for DC/DC converter circuit. This pin is the power supply pin for the internal buffer of the DC/DC voltage converter. Therefore, for this pin, the Click board uses a low dropout linear regulator AP7331 from Diodes Incorporated, providing a 3.6V power supply out of 5V mikroBUS rail.
OLED B Click communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings. It provides the possibility of the communication-enable feature routed to the CS pin of the mikroBUS socket, enabling the OLED B Click for MCU communication only when the CS pin is pulled to a low logic state. In addition, it has two more pins. First is related to the reset function, routed to the RST pin on the mikroBUS socket (when the pin is in a low logic state, the initialization of the chip is executed), and the second labeled as D/C and routed to the PWM pin on the mikroBUS socket is I2C peripheral address selection pin.
NOTE: If the noise accidentally occurs at the displaying window during the operation, please reset the display to recover the display function.
This Click board is designed to be operated only with a 3.3V logic voltage level, while 5V is used as a supply voltage of the AP7331 LDO. The board must perform appropriate logic voltage level conversion before use with MCUs with different logic levels. However, the Click board comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
●Features
・Interface: GPIO, I2C, SPI
・Compatibility: mikroBUS
・Dimensions: 42.9 x 25.4mm
・Input Voltage: 3.3V, 5V
