1.12 Inch Graphic OLED Display Module 128x128 Dots SPI & I2C Interface

Pin Number

Power Supplly for OEL Panell

This is the most positive voltage supply pin of the chip. It must be supplied externally.

Power Supplly for Logiic

This is a voltage supply pin. It must be connected to external source.

Ground of OEL System

This is a ground pin. It also acts as a reference for the logic pins, the OEL driving voltages, and the analog circuits. It must be connected to external ground.

Current Reference for Brightness Adjustment

This pin is segment current reference pin. A resistor should be connected between this pin and VSS. Set the current at 12.5μA maximum.

Voltage Output High Level for COM Signal

This pin is the input pin for the voltage output high level for COM signals. A

capacitor should be connected between this pin and VSS.

4,5

BS1 BS2

I

Communiicatiing Protocoll Sellect

These pins are MCU interface selection input.

Power Reset for Controller and Driver

This pin is reset signal input. When the pin is low, initialization of the chip is executed. Keep this pin pull high during normal operation.

Chip Select

This pin is the chip select input. The chip is enabled for MCU communication only

when CS# is pulled low.

9

A0

I

Data/Command Controll

This pin is Data/Command control pin. When the pin is pulled high, the input at D7~D0 will be interpreted as display data. When the pin is pulled low, the input at D7~D0 will be transferred to the command register.

When the pin is pulled high and serial interface mode is selected, the data at SI will be interpreted as data. When it is pulled low, the data at SI will be

transferred to the command register. In I2C mode, this pin acts as SA0 for slave address selection.

For detail relationship to MCU interface signals, please refer to the Timing Characteristics Diagrams.

10

WR#

I

This is a MPU interface input pad.

When connected to an 8080 MPU, this is active LOW. This pad connects to the 8080 MPU WR

signal. The signals on the data bus are latched at the rising edge of the WR signal. When connected to a 6800 Series MPU: This is the read/write control signal input terminal.

When R/W = “H”: Read. When R/W = “L”: Write.

11

E/RD#

I

This is a MPU interface input pad.

When connected to an 8080 series MPU, it is active LOW. This pad is connected to the RD signal

of the 8080 series MPU, and the data bus is in an output status when this signal is “L”.

When connected to a 6800 series MPU, this is active HIGH. This is used as an enable clock input

of the 6800 series MPU.

12~19

D0~D7

I/O

Seriiall Data Input/Output and cllock

When serial mode is selected, D1 will be the serial data input SI and D0 will be the serial clock input SCL.

When I2C mode is selected, D1 be the serial data input SDA and D0 is the serial clock input, SCL.

Characteristics

Brightness

(VPP Supplied Externally)

Lbr

Note 4

100

140

-

cd/m2

Characteristics

Supply Voltage for Display

VPP

Note 5

11.5

12.0

12.5

V

High Level Input

VIH

IOUT = 100μA, 3.3MHz

0.8×VDD

-

VDD

V

Sleep Mode Current for VDD

IDD, SLEEP

-

0.1

5

μA

Sleep Mode Current for VPP