128×64 Graphic 2.7-inch COG OLED Display Module

Model No. WEO012864AM

Type: Graphic
Structure: COG
Size: 2.7″
128 x 64 Dot Matrix
IC：SH1106
3V Power supply
1/64 duty
Interface: 6800,8080,4-wire SPI,I2C
Display Color: White / Yellow

Categories: Graphic OLED Display, OLED Module

Description

WEO012864AM is a 2.7-inch COG 128×64 graphic OLED display. This module is built-in with SH1106 IC; it can be communicated via I2C, 4-wire SPI serial or 6800, 8080 parallel interface and, its 10,000:1 high contrast ratio makes the display image more clear. The supply voltage of logic is 1.65 V~ 3.3 V (typical value 3V), supply voltage for display is 6.4V~ 13.5V (typical value 13V), 1/64 driving duty.

This module can be operating at temperatures from -40℃ to +80℃; its storage temperatures range from -40℃ to +85℃. 2.7-inch OLED is very suitable for smart home applications, hi-tech equipment, meter equipment, industrial control systems, medical instruments, IoT systems…etc. WEO12864AM series has different ZIF FPC; currently, we provide 22 pins, 24 pins, 30 pins, and 31 pins for options; if customs require custom FPC, welcome to contact us.

USB Voltmeter, Smart Home - WEO012864AH, WEO012864AL, WEO012864AM

Drawing

128x64 Graphic 2.7-inch COG OLED Display Module - WEO012864AM

Data source ref:WEO012864AMWPP3N00000

SPECIFICATIONS

Interface Pin Function

No.

Symbol

Function

ESD_GND

ESD Ground pin

VSS

Ground.

3-10

No connection

VDD1

Power supply input

IM1

These are the MPU interface mode select pads.

	8080	I2C	6800	4-wire SPI
IM1	1	1	0	0
IM2	1	0	1	0

Note
(1) 0 is connected to VSS
(2) 1 is connected to VDD1

IM2

No connection

/CS

This pad is the chip select input. When /CD = “L”, then the chip select becomes active, and data/command I/O is enabled.

/RES

This is a reset signal input pad. When /RES is set to “L”, the settings are initialized. The reset operation is performed by the /RES signal level.

This is the Data/Command control pad that determines whether the data bits are data or a command.
A0 = “H”: the inputs at D0 to D7 are treated as display data.
A0 = “L”: the inputs at D0 to D7 are transferred to the command registers.
In I2C interface, this pad serves as SA0 to distinguish the different address of OLED driver.

/WR
(R/W)

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.

E/RD

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.
When /RD = “H”: Enable.
When /RD = “L”: Disable.

20~27

D0~D7

This is an 8-bit bi-directional data bus that connects to an 8-bit or 16-bit standard MPU data bus.
When the serial interface is selected, then D0 serves as the serial clock input pad (SCL) and D1 serves as the serial data input pad (SI). At this time, D2 to D7 are set to high impedance.
When the I2C interface is selected, then D0 serves as the serial clock input pad (SCL) and D1 serves as the serial data input pad (SDAI). At this time, D2 to D7 are set to high impedance.

IREF

This is a segment current reference pad. A resistor should be connected between this pad and VSS. Set the current at 18.75uA.

VCOMH

This is a pad for the voltage output high level for common signals.
A capacitor should be connected between this pad and VSS.

VPP

OLED panel power supply. Generated by internal charge pump.
Connect to capacitor. It could be supplied externally.

ESD_GND

ESD Ground pin

General Specification

Item	Dimension	Unit
Dot Matrix	128 × 64	dots
Module dimension	73.0 × 41.86 × 2.01	mm
Active Area	61.41 × 30.69	mm
Pixel Size	0.45 × 0.45	mm
Pixel Pitch	0.48 × 0.48	mm
Display Mode	Passive Matrix
Display Color	Monochrome
Drive Duty	1/64 Duty
IC	SH1106
Interface	6800,8080,4-Wire SPI,I2C
Size	2.7 inch

Absolute Maximum Ratings

Parameter	Symbol	Min	Max	Unit
Supply Voltage for Logic	VDD1	-0.3	3.6	V
Supply Voltage for Display	VPP	-0.3	14.5	V
Operating Temperature	TOP	-40	+80	°C
Storage Temperature	TSTG	-40	+85	°C

Electronical Characteristics

Item	Symbol	Condition	Min	Typ	Max	Unit
Supply Voltage for Logic	VDD1	－	1.65	3.0	3.3	V
Supply Voltage for Display	VPP	－	6.4	13.0	13.5	V
High Level Input	VIH	－	0.8×VDD1	－	VDD1	V
Low Level Input	VIL	－	VSS	－	0.2×VDD1	V
High Level Output	VOH	－	0.8×VDD1	－	VDD1	V
Low Level Output	VOL	－	VSS	－	0.2×VDD1	V
Display 50% Pixel on	IPP	VPP =13V	－	24	36	mA

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