Data Sheet

1.5inch OLED Module User Manual
By default, the module is in 4-wire SPI communication mode, that is the BS is connected to
0. Not all the 0 and 1 stands for level, it just stands for the connecting options of the resister. The
actual hardware connection for different communication mode is as below:
BS
CS
D/C
DIN
CLK
4-wire SPI
0
Chip Selection
D/C
MOSI
SCK
I2C
1
NC
0/1
SDA
SCL
Description:
4-wires SPI (factory setting): BS (0) is connected to ground. In this mode, DIN is connected to
MOSI and the CLK is connected to SCK.
I2C: BS (1) is connected to VCC. In this mode, DIN is connected to SDA and the CLK is connected
to SCL. The CS pin can be dangling. The pin DC must be connected to 0 or 1, it is used to
configure the slave address of I2C device, 1 (High) configures the address of OLED to 0x3D and
0 set it as 0x3C.
WORDING PRINCIPLE
1. Working principle
SSD1327 is a controller for 128*128 OLED display, and the module embeds this controller.
The controller supports 16-bit grey level picture display as well.