0.66 Inch IIC OLED Display 16 Pin With 64x48 Pixels, White/Blue Fonts Ultra-Low Power OLED Display

0.66 Inch IIC OLED Display 16 Pin 64x48 Pixels Product Description

SFOM066YZ16-6448WB-01 the OLED module has the diagonal size 0.66 inch, it's made of 64*64 pixels. SFOM066YZ16-6448WB-01 having a PCB control with IIC interface, the PCB board is with 16 mounting holes is an easy method for customers to fix modules on their applications. SFOM066YZ16-6448WB-01 module is built in with SSD1306 IC; it supports IIC interface, driving duty 1/64, supply voltage for logic is from 3.3V ~5V, I/O level 5V to 3V with conversion circuit, the display with 50% check board current is 80mA @3.3VDD (typical value).  the connection of the module is 7 header pins, optional 4 pins header pins connection. 
This OLED module is suitable for smart home application, medical device, smart control, meter, etc. it can be operating at temperatures from -40℃ to +85℃; 
 

1.  0.66 inch mini OLED display with 64X48 resolution and SSD1306 chipset
2.  Ultra-low power consumption: full screen lighting 0.08w
3.  Four mounting holes for easy installation
4.  Interface type: IIC (can be changed to SPI)
5.  Support a variety of control chips: fully compatible with Arduino 51 series, msp430 series, stm32/2 CSR IC, ETC
6.  Power Voltage: DC 3V - 5V

Features:

SAEF Technology is a professional OLED Module Supplier. We provide a wide range of standard passive matrix OLED (PMOLED) / OLED dot matrix display and custom design Character OLED modules, Graphic OLED displays and OLED display panels. Mechanical structure includes Chip on Board (COB), Chip on Glass (COG), and TAB (Tape Automated Bonded) types. Customers can upgrade applications from STN LCD to OLED displays easily. SAEF OLED modules are featured with all the important advantages –

• Faster response time “At +25 ℃ 10 μsec.”
• Unlimited viewing angle “Up to 175 degree
• Thin – No need of backlight, self emitting
• High Brightness
• High contrast ratio “Up to 10,000:1”
• Wide Operation Temperature “-40 ℃ ~ 80 ℃”
• Lower power consumption

0.66 Inch IIC OLED Display 16 Pin With 64x48 Pixels, White/Blue Fonts Ultra-Low Power OLED Display Product Drawing

0.66 Inch IIC OLED Display 16 Pin With 64x48 Pixels, White/Blue Fonts Ultra-Low Power OLED Display Product Image

Understand the principle of OLED display - play with various ways to use OLED modules

The OLED module has four working modes, namely 6800 and 8080 parallel interfaces, 4-wire serial SPI interface mode, and IIC interface mode. The relationship between the BS1/BS2 settings and the module interface mode is shown in the following table:

The default setting of SAEF Technology OLED module is BS0 to GND, BS1 and BS2 to VCC (8080 mode), if you want to set it to other modes, you need to modify the BS0-BS2 settings with a soldering iron on the back of the OLED. (Hardware Change)
From the schematic, we can know that there are a total of 16 pins drawn out, and out of the 16 lines, we only used 15 pins, and one of them is dangling. Of the 15 lines, 2 are power and ground, and 13 are left. In different modes, the number of signal lines we need is different, in 8080 mode, all 13 are needed, one of which is common, that is, the reset line RST (RES), which we can directly connect to the reset of the MCU (to confirm that the reset method is the same), so that one line can be omitted. In IIC mode, only 2 lines are needed!

We just learned about it. The working mode of the IIC only needs two lines, and the working mode of the IIC is to use two wires to simulate the IIC to obtain data.

The OLED controller is SSD1306, that is to say: the bare screen is driven by SSD1306, which is also a more widely used led driver chip.

OLED module video memory
OLED itself does not have video memory, and its video memory is dependent on SSD1306 to provide. The total memory of the SSD1306 is 128 * 64 bits, and SSD1306 divide the memory into 8 pages. Each page contains 128 bytes, a total of 8 pages, which is exactly 128*64 dot matrix size.
However, because OLED cannot control one dot matrix at a time, it can only control 8 dot matrix; And it's a vertical sweep control;
Because each write is written in bytes, there is a problem, if we use the write-only mode to operate the module, then, we have to write 8 points at a time, so when we draw a point, we must figure out the current state of each bit of the byte where the point to be set is located (0/1?). Otherwise, the written data will overwrite the previous state, and the result will be that some points that do not need to be displayed are displayed, or those that should be displayed are not displayed. In the readable mode, we can read out the byte to be written first, get the current situation, and then write it into the gram after modifying the bit to be rewritten, so that it will not affect the previous situation. However, this requires the ability to read the GRAM, for 3-wire or 4-wire SPI mode, the module does not support reading, and the read->-to-> write mode is also relatively slow.
So the method we use is to create an OLED GRAM (a total of 128 bytes) inside the STM32, and at each modification, only modify the GRAM on the STM32 (actually SRAM), and after the modification, write the GRAM on the STM32 to the OLED GRAM at one time. Of course, this method also has disadvantages, that is, for those microcontrollers with very small SRAM (such as the 51 series), it is more troublesome.

Contact Us

We love to hear about your projects, If you have any questions, we can be reached at sales2@saef.com.cn