3.37 Inch OLED Display Module with 240x128 Resolution and Serial
Interface
This high-performance 3.37-inch OLED display module features a
240×128 resolution and offers versatile interface compatibility,
including 8080/6800 Parallel MPU, 3-Wire SPI, and 4-Wire SPI.
Equipped with a yellow monochrome display, 4-bit grayscale, an
ultra-high contrast ratio of 10000:1, and a 160° wide viewing
angle, it delivers sharp, vibrant image quality. With a broad
operating temperature range of -30℃ to 80℃ and a long service life
of 45,000 hours, it's perfectly suited for industrial control
systems, portable instruments, embedded systems, and IoT devices.
Product Specifications
| Product | 3.37 inch OLED Module | Module Number | GME240128-01 |
| Resolution | 240(H)×128(V) dots | Display Color | Yellow (Monochrome) |
| Brightness | 40 Cd/m² (Min.), 50 Cd/m² (Typ.) | Outline Dimensions (Panel) | 89.52(W)×54.41(H)×2.05±0.2(T) |
| Viewing Angle | 160 Degree (Full Direction) | Active Area | 75.58(W)×40.30(H) |
| Interface | Parallel (8080/6800 MPU) / Serial (3-Wire SPI / 4-Wire SPI) | Operating Temperature | -30 ~ +80 ℃ |
| Driver IC | SSD1322Z2 | Storage Temperature | -40 ~ +85 ℃ |
| IC Package Type | COG with ZIF tail | Duty | 1/128 |
| Pixel Pitch | 0.315(W)×0.315(H) | Grayscale | 4 Bit |
| Pixel Size | 0.290(W)×0.290(H) | Weight | 20 g |
| Contrast Ratio | 10000:1 (Darkroom) | Operating Life Time | 45,000 Hours (at 50 Cd/m²) |
| Power Consumption | 400 mW (Typ., 30% pixels ON) | Response Time | 0.02 ms (Rise/Fall) |
Product Highlights: 3.37-inch OLED display, 240×128 high resolution, multi-interface
support (Parallel/SPI), SSD1322Z2 driver IC, COG with ZIF tail
packaging, 10000:1 ultra-high contrast ratio, 4-bit grayscale, 160°
wide viewing angle, wide temperature range (-30~80℃), 45,000 hours
long service life, fast response time, low power consumption
Technical Features
- COG (Chip on Glass) with ZIF tail packaging for compact size, high
reliability and easy integration
- Multi-interface compatibility (8080/6800 Parallel MPU, 3-Wire SPI,
4-Wire SPI) to match mainstream MCUs
- Excellent optical performance: 10000:1 darkroom contrast ratio, 50
Cd/m² typical brightness, 160° full-view display
- 4-bit grayscale (16 levels) for rich image details and smooth
gradient effects
- Wide operating temperature range (-30℃ to +80℃) adapts to harsh
industrial and outdoor environments
- Low power consumption (400 mW typical) and fast response time (0.02
ms) for real-time data display
- Long service life (45,000 hours) ensures stable operation in
long-term use scenarios
- Built-in ESD protection circuit to enhance anti-interference
ability in complex environments
- Compliant with strict quality control standards, ensuring
consistent performance and reliability
Electrical Specifications
Logic supply voltage (VCI): 2.4V to 3.5V (Typ. 3.0V)
Core logic voltage (VDD): 2.4V to 2.6V
Panel driving voltage (VCC): 10.0V to 20.0V (Typ. 14.0V)
Interface logic voltage (VDDIO): 1.65V to VCI
Input high voltage (VIH): ≥0.8×VDDIO; Input low voltage (VIL):
≤0.2×VDDIO
Output high voltage (VOH): ≥0.9×VDDIO; Output low voltage (VOL):
≤0.1×VDDIO
SPI interface maximum clock frequency: 3.33 MHz (minimum clock
cycle 300 ns)
Parallel interface clock cycle: 100 ns (write), 400 ns (read)
Pin Definition
| PIN | Symbol | Description |
|---|
| 1 | NC | No connection |
| 2 | VSS | Ground. Common Voltage Reference Pin |
| 3 | VCC | Power supply for panel driving voltage. Segment voltage |
| 4 | VCOMH | Reference Pin. COM signal deselected voltage level. High Level
Voltage Output Of COM Signal |
| 5 | VLSS | Analog system ground pin. Voltage Supply |
| 6-13 | D7-D0 | Bi-directional data bus connecting to the MCU data bus. Unused pins
recommended to tie LOW (D2 pulled low in SPI mode) |
| 14 | E (RD#) | MCU Interface Input pin. 6800 mode: enable signal (high level
initiates read/write). 8080 mode: read signal (low level initiates
read). SPI mode: must connect to ground |
| 15 | R/W#(WR#) | MCU Interface Input pin, in 6800 parallel mode, it is used as
read/write selection input, read mode will be carried out when this
pin is pulled high while write mode with this pin pulled low. In
8080 parallel mode, this pin will be write input, write operation
is initiated when this is pulled low with chip selected. When SPI
interface is selected, this pin must be connected to ground. |
| 16-17 | BS0-1 | MCU bus interface selection pins. Select appropriate logic setting
for interface type |
| 18 | DC# | Data/Command control pin. HIGH: D[7:0] = data; LOW: D[7:0] =
command |
| 19 | CS# | Chip select input. Chip enabled for MCU communication when pulled
LOW |
| 20 | RES# | Reset signal input. Pull LOW for initialization; keep HIGH during
normal operation |
| 21 | FR | No connection. Must be left open individually |
| 22 | IREF | Segment output current reference pin. Connect to VSS via resistor
to maintain ~10uA current |
| 23 | NC | No connection |
| 24 | VDDIO | Power supply for interface logic level. Match with MCU interface
voltage |
| 25 | VDD | Power supply pin for core logic operation. Connect capacitor to VSS |
| 26 | VCI | Low voltage power supply. Must be ≥ VDD and VDDIO |
| 27 | VSL | Segment voltage reference pin. Connect with resistor and diode to
ground when using external VSL |
| 28 | VLSS | Analog system ground pin |
| 29 | VCC | Power supply for panel driving voltage. Segment Voltage |
| 30 | NC | No connection |
Application Scenarios
- Industrial control equipment (PLC panels, sensor data monitors,
industrial controllers)
- Portable instruments (handheld meters, data loggers, portable
detection devices)
- Embedded systems (IoT terminals, smart controllers,
microcontroller-based projects)
- Consumer electronics (portable gadgets, small POS machines, smart
home control panels)
- Automotive electronics (in-vehicle monitoring displays, small
control screens)
- Medical devices (portable medical monitors, small diagnostic
equipment)
- DIY electronics and hobby projects requiring high-performance
small-screen displays
Customization Options
- FPC/ZIF Tail Customization: Flexible FPC length, pin layout and ZIF connector type adjustments
for system integration
- Brightness Tuning: Customizable brightness levels (40~80 Cd/m²) based on application
requirements
- Interface Optimization: Dedicated interface configuration (Parallel/SPI) and
initialization code adaptation
- Polarizer Customization: Different polarizer types (wide view, high contrast) for specific
viewing needs
- Packaging Solution: Customized anti-static packaging, vacuum packaging with desiccant
for long-term storage
- Quality Inspection: Enhanced quality control standards and custom inspection items for
bulk orders
Handling Notes
1. Electrostatic Protection: Use anti-static bracelets and grounded tools when handling. Work
in 50%-60% relative humidity environment to reduce static
generation. Avoid touching circuit, soldering pins and IC directly
with hands.
2. Cleaning Instructions: Clean polarizer surface with soft dry cloth or cloth moistened
with Isopropyl alcohol/Ethyl alcohol. Avoid water, ketone and
aromatic solvents. Wipe off water drops immediately.
3. Soldering Requirements: Soldering temperature: 260°C±10°C, soldering time: 3-4 seconds,
repeating no more than 3 times. Remove remaining flux after
soldering (except non-halogen flux).
4. Storage Conditions: Store in vacuum bag with desiccant at 0°C~30°C, humidity ≤60%.
Reseal if not used within 1 month after opening. Keep in dark
place, avoid sunlight/fluorescent light exposure.
5. Operation Precautions: Follow power-on sequence (VCI/VDDIO -> VCC) and power-off
sequence (VCC -> VCI/VDDIO). Avoid fixed image display for over
30 seconds to prevent image retention. Do not disassemble or apply
excessive pressure on glass panel.
