0.42” 0.42 Inch White OLED Display LCD Screen Module Full View LED 3.3V SSD1306 72X40 Serial 72*40 I2C IIC/SPI Interface

0.42” 0.42 Inch White OLED Display LCD Screen Module Full View LED 3.3V SSD1306 72X40 Serial 72*40 I2C IIC/SPI Interface

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Regular Price $4.58 $2.08

Vendor : FETCH BARK LLC

Product Type :

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SPECIFICATIONS

Brand Name: NoEnName_Null

Choice: yes

Model Number: 0.42 Inch White OLED Display Screen LCD Module

Origin: Mainland China

Resolution: 128*64

Type: OLED

semi_Choice: yes


0.42 Inch

0.42 Inch 4P

Product Parameters
Resolution: 72*40
Driver IC: SSD1306
Color: white
Brightness: Support 256-step adjustable brightness
Communication interface: IIC interface
Pin Definition
1.GND
2.VCC: +3.3-5V
3.SCL: SPI clock
4.SDA: SPI data
OLED Bare Screen Peripheral Circuit
Special attention: Because the screen driver chip supports internal boost, we can directly supply a power supply; no external high-voltage power supply is needed.
When using internal boost, the 6-foot VCC does not need to be connected to the power supply: just connect the capacitor to the ground directly: VPP needs to be connected to about 7.5V power supply instead of 3.3V power supply when using external power supply.
Note: R10, C9 and D1 are hardware RC reset circuits. The first operation OLED needs after power-on is reset. So reset is necessary. If there are many single-chip IOs in the system, it can connect the single-chip IO directly to the RES of OLED without using RC reset circuit.

0.42 Inch 7P


Product Parameters
Resolution: 72*40
Driver IC: SSD1306
Color: white
Brightness: Support 256-step adjustable brightness
Communication interface: 4-wire SPI/IIC, default SPI
Interface Definition
1.GND
2.VCC: +3.3-5V
3.SCL: SPI clock
4.SDA: SPI data
5.RES: OLED reset after power-on low level
       Reset once, then stay high
DC: Data / Command Control Line
CS: OLED SPI chip select, active low
The 0.42 inch spi interface is modified to the IIC interface operation method
The resistor SPI is removed and soldered to the ICC position; the ends of R5 are shorted by tin, and the dc and cs pins are grounded; the res pin is controlled by an io to complete the reset; the reset method first keeps the RES pin at the level of 20ms; The RES pin is operated with a high level to complete the reset operation, and then the OLED is initialized; thus, ic=SDA can be communicated with iic.

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