Product Subtitle / Keywords:
1.2 Inch Display, 240(RGB)×240 Resolution, Transmissive a-Si TFT IPS, 8-bit 8080 Parallel Interface, COG+FPC+B/L, 262K Colors, NV3002C Driver (inferred), 18-pin FPC, 400 cd/m² Brightness, 1200:1 Contrast Ratio, -20°C~70°C Operating Temperature
Note: The LS012I03-M-V2 and LS012I02-MS-V1 share the same physical and optical specifications for the LCD panel (same active area, resolution, and electro-optical characteristics as extracted). The primary difference is in the FPC pinout and interface — this module uses an 8-bit 8080 interface only, with no IM pin for SPI selection.
1. Executive Summary & Product Positioning
The LS012I03-M-V2, developed by LESSON (Wan'an) Zhixian Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 1.2-inch transmissive amorphous Silicon TFT-LCD module with IPS (In-Plane Switching) technology.
This product specification (Revision V2, Module Type: COG+FPC+B/L) serves as the definitive technical document, defining its structural composition, mechanical dimensions, absolute maximum ratings, detailed electrical characteristics, 8-bit 8080 parallel interface pinout and timing, and comprehensive electro-optical performance. It delivers a square resolution of 240(RGB)×240 with 262K-color display capability.
The document provides the core parameters necessary for system integration. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances described herein.
2. Detailed Product Overview & Architecture
- Core Technology: Transmissive-type a-Si TFT-LCD (amorphous silicon thin film transistor liquid crystal display).
- Module Construction: COG (Chip-On-Glass) + FPC (Flexible Printed Circuit) + B/L (Backlight Unit).
- Interface: 8-bit 8080 Parallel Interface.
- Driver IC: (Inferred: likely NV3002C or similar, based on model family).
- Backlight: (Inferred: 1 LED, similar to LS012I02-MS-V1).
Panel specifications (H×V×D, active area, dots) are identical to LS012I02-MS-V1, as extracted from the document.
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Item | Specification | Unit |
|---|---|---|
| Module size (H×V×D) | 32.56 × 34.31 × 1.56 | mm |
| Active area (H×V) | 30.24 × 30.24 | mm |
| Number of dots / Resolution | 240(RGB) × 240 | pixel |
| Panel Size (Diagonal) | 1.2 | inch |
3.2 Electrical & Interface Specifications
3.2.1 Absolute Maximum Ratings
(Identical to LS012I02-MS-V1)
| Item | Symbol | Min | Max | Unit | Remark |
|---|---|---|---|---|---|
| Supply voltage | VCC | -0.3 | 4.6 | V | Note1, Note2 |
| Supply voltage | IOVCC | -0.3 | 4.6 | V | Note1, Note2 |
| Operating temperature | TOPR | -20 | 70 | °C | Note1, Note2 |
| Storage temperature | TSTR | -30 | 80 | °C | Note1, Note2 |
3.2.2 Electrical Characteristics (DC – Recommended Operating Conditions)
(Identical to LS012I02-MS-V1)
| Item | Item | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply voltage | VCC | VCC | 2.5 | 2.8 | 3.6 | V |
| Supply voltage | IOVCC | IOVCC | 1.65 | 2.8 | 3.6 | V |
| Input Voltage (L level) | VIL | VIL | 0 | — | 0.3 * IOVCC | V |
| Input Voltage (H level) | VIH | VIH | 0.7 * IOVCC | — | IOVCC | V |
3.2.3 Pin Description (18-pin FPC – Key Pins)
| PIN NO. | Symbol | I/O | Description |
|---|---|---|---|
| 1 | RESET | I | This signal will reset the device and must be applied to properly initialize the chip |
| 2 | D7 | I | Data bus |
| 3 | D6 | I | Data bus |
| 4 | D5 | I | Data bus |
| 5 | D4 | I | Data bus |
| 6 | D3 | I | Data bus |
| 7 | D2 | I | Data bus |
| 8 | D1 | I | Data bus |
| 9 | D0 | I | Data bus |
| 10 | RD | I | 8080-I/8080-II system (RDX): Serves as a read signal and MCU read data at the rising edge. |
| 11 | WR | I | 8080-I/8080-II system (WRX): Serves as a write signal and writes data at the rising edge. |
| 12 | DC | I | This pin is used to select "Data or Command" in the parallel interface. When DCX='1', data is selected. When DCX='0', command is selected. |
| 13 | CS | I | Chip select input pin ("Low" enable). |
| 14 | TE | O | Tearing effect output pin to synchronize MPU to frame writing, activated by S/W |
| 15 | GND | P | System ground level for dynamic state. |
| 16 | VCC | P | High voltage power supply for analog circuit blocks (2.5~3.6V) |
| 17 | LEDK | P | Power for LED backlight cathode |
| 18 | LEDA | P | Power for LED backlight anode |
Interface Summary:
- 8-bit 8080 Parallel Interface: Data bus D[0:7] with control signals CS (Chip Select), DC (Data/Command), WR (Write), and RD (Read).
- TE Pin (Pin 14): Tearing effect output — can be used for frame synchronization.
- Reset: Dedicated RESET pin (Pin 1).
- Backlight: Dedicated LEDA (Anode, Pin 18) and LEDK (Cathode, Pin 17) pins.
3.3 Optical & Electro-Optical Characteristics
(Identical to LS012I02-MS-V1)
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|---|
| Response time | Tr + Tf | θx = θy = 0 | — | 25 | 36 | ms |
| Contrast Ratio | CR | θx = θy = 0 | 1000 | 1200 | — | — |
| Transmittance | T% | θx = θy = 0 | 3.65 | 4.3 | — | % |
| Color Chromaticity (White) | Wx | θx = θy = 0 | — | 0.293 | — | — |
| Color Chromaticity (White) | Wy | θx = θy = 0 | — | 0.335 | — | — |
| Viewing angle | θT/B/L/R | CR > 10 | 80 | 85 | — | Deg. |
| Luminance (IF = 40mA) | L | — | — | 400 | — | cd/m² |
3.4 Reliability Specification
| Test Item | Test Condition |
|---|---|
| High Temperature Operating | 70±2℃/120 hours |
| Low Temperature Operating | -20±2℃/120 hours |
| Vibration Test | 10Hz~55Hz~10Hz, 1.5mm, X,Y,Z, 3 hours |
| Dropping Test | Drop to ground from 1m height, one time, every side of carton (Packing condition) |
| ESD Test | Voltage: ±8KV, R: 330Ω, C: 150pF, Air discharge, 10 times |
4. Application Guidelines & Critical Notes
Critical Design Considerations
-
Interface (8-bit 8080 Only): Unlike the LS012I02-MS-V1, this module does not have an IM pin and does not support SPI mode. It uses only an 8-bit 8080 parallel interface.
-
8 Data Pins Required: The host MCU must have at least 12 GPIOs (8 data + 4 control: CS, DC, WR, RD) to drive the display.
-
TE Pin Available: The TE pin (Pin 14) provides tearing effect output for frame synchronization — use it for smooth animations.
-
Power Supply: Provide stable VCC (2.8V typical) and IOVCC (2.8V typical). The backlight requires a constant-current LED driver set to 40 mA.
-
Mechanical Integration: The module is identical in size and mounting considerations to the LS012I02-MS-V1:
- Outline: 32.56mm × 34.31mm × 1.56mm.
- Bezel opening: 0.3mm smaller per side.
- Foam cutout: 0.6mm larger per side.
5. Conclusion & Design-In Support
The LS012I03-M-V2 is functionally identical in display performance to the LS012I02-MS-V1 but uses a dedicated 8-bit 8080 parallel interface with an 18-pin FPC instead of the flexible dual-mode interface.
Key Differences from LS012I02-MS-V1:
| Feature | LS012I02-MS-V1 | LS012I03-M-V2 |
|---|---|---|
| Interface | 8-bit 8080 / 4-SPI (selectable via IM pin) | 8-bit 8080 only |
| FPC Pins | 21-pin | 18-pin |
| IM Pin | Yes (Pin 15) | No |
| TE Pin | Not included in excerpt | Yes (Pin 14) |
| Reset Pin | Not included in excerpt | Yes (Pin 1) |
| Driver IC | NV3002C | NV3002C (inferred) |
This module is a great choice for designs where only a standard 8-bit 8080 parallel interface is available and the simpler pinout of the 18-pin connector is preferred.
