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Geekcreit® 7Pin 0.96 Inch OLED Display + Transparent Shell Acrylic Case 12864 SSD1306 SPI IIC Serial LCD Screen Module

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                  Feature:
                   
                  Control chip: SSD1306
                  Display area: 21.744 x 10864mm
                  Physical size: 27.3 x 27.8mm
                  Interface type: Default 4-wire SPI
                  Switchable rear resistor to use 3-wire SPI, IIC interfaces
                  Number of pins: 7
                  Display color: yellow blue
                  Working temperature: -40~70°C
                  Net weight: 5g
                   
                  Interface definition:
                   
                  1> GND (Power ground)
                  2> VCC (Power + 3.3-5V)
                  3> D0 (SPI clock line for SPI interface and IIC clock line for IIC interface)
                  4> D1 (SPI data line for SPI interface and IIC data line for IIC interface)
                  5> RES (OLED reset, OLED needs to be reset once after power-on)
                  6> DC (SPI data/command selection pin, used to set IIC address when IIC interface)
                  7> CS (OLED SPI chip select, active low, if you do not want to use must be grounded)
                   
                  Package includes:
                   
                  1 x 0.96 Inch OLED Display Module
                  1 x Acrylic bracket kit

                  Wiring method:

                  Wiring 1:
                  MCU hardware SPI connection method:
                  If there is only one device on the SPI bus, you can directly ground the CS of the OLED screen, which saves an IO.

                  Wiring 2:
                  MCU IO analog SPI connection mode:
                  If there is only one device on the SPI bus, you can directly ground the CS of the OLED screen, which saves an IO.

                  Wiring 3:
                  MCU analog IIC connection method:
                  IIC address:
                  DC is low = 0x78
                  DC is high = 0x7A
                  Generally DC grounding
                   
                  Wiring 4:
                  MCU hardware IIC connection method:
                  IIC address:
                  DC is low = 0x78
                  DC is high = 0x7A
                  Generally DC grounding

                  As below pictures show: 

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