XR / XL · glass terminals
Pin 41 is the right glass terminal XR. Pin 43 is the left glass terminal XL.
1.77" TFT Display 128x160 Transmissive - SPI, MCU, RGB
Sale price$14.90
1.77" TFT Display 128x160 Transmissive - SPI, MCU, RGB
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DM-TFT18-310
1.77" TFT Touch Display · 128 × 160 · MCU / SPI / RGB
Combine a compact colour interface with resistive-touch input. DM-TFT18-310 brings a 128 × 160 TFT and four touch electrodes together in a 1.77-inch, 9.0 g assembly.
Choose MCU, serial or RGB for the image path. The host provides separate touch acquisition and coordinate calibration for the installed screen orientation.
Resolution128 × 160
InterfaceMCU / SPI / RGB
Controller / panelILI9163
TouchFour-terminal resistive touch
＋ Click to enlargeColour display and four-wire touch
Image transferThe ILI9163 drives the 128 × 160 colour image. Resistive touch is available separately through pin 41 XR, pin 42 YD, pin 43 XL and pin 44 YU.
Touch inputThe four terminals connect to host-side touch-acquisition electronics. The application maps the measured coordinates to the image orientation, while display commands and pixels use the selected MCU, serial or RGB connection.
Touch electrodes and display signals
The touch layer exposes four resistive electrodes on the same flexible connection as the display. Their electrical roles are independent of the selected MCU, serial or RGB image interface.
YD / YU · film terminals
Pin 42 is the bottom film terminal YD. Pin 44 is the top film terminal YU.
Host coordinate acquisition
An external acquisition circuit reads the resistive panel. The application calibrates and maps those measurements to its display coordinate system.
This connection exposes the touch electrodes themselves. It does not provide a packet-based I²C touch interface, and the ILI9163 display controller is responsible for the image path.
Touch-terminal reference →Plan a compact touch-operated interface
The display and touch layer are supplied as one 9.0 g module; the host turns the electrode measurements into application input.
Design within 128 × 160 pixels
Use the portrait image area for the application’s labels, values and controls. The 65K-colour display provides the image; control size and behaviour are defined by the application.
Align touch and graphics
Map and calibrate acquired coordinates for the installed image orientation. A rotation in the application needs the corresponding touch-coordinate mapping.
Fit the complete touch stack
Use the DM-TFT18-310 drawing for panel thickness, outline and FPC placement. Its touch assembly must fit the enclosure as a whole.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product model | DM-TFT18-310 |
| Display size | 1.77 inch |
| Resolution | 128 × 160 pixels |
| Display connection | MCU / 3- or 4-wire SPI / 16- or 18-bit RGB |
| Controller / panel | ILI9163 |
| Display colours | 65K |
| Touch configuration | Four-terminal resistive touch |
| Supply | 2.5–4.2 V; 3.3 V typical |
| Luminance | 300 cd/m² minimum; 360 cd/m² typical |
| Operating / storage temperature | −20 to +70 °C / −30 to +80 °C (absolute maximum ratings) |
Several host-interface choices
The display supports 8-, 9-, 16- or 18-bit MCU operation, 3-wire or 4-wire serial, and 16-bit or 18-bit RGB. The IM, RCM1 and SPI4W pins select the operating mode.
RGB transfers use the pixel bus with PCLK, DE, HSYNC and VSYNC. The touch terminals remain independent of the chosen image interface, allowing touch sampling and screen updates to be implemented as separate host functions.
Hardware choices for serial or parallel operation
The display’s mode-select pins allow the image connection to be chosen for the host hardware. Touch acquisition retains the same four-terminal connection across these display modes.
8 / 16 / 9 / 18-bit parallel
IM1/IM0 combinations 00, 01, 10 and 11 select these four parallel widths respectively. IM2 selects parallel operation at 1.
3-wire or 4-wire serial
IM2 = 0 selects serial operation. SPI4W = 1 selects 3-wire serial; SPI4W = 0 selects 4-wire serial.
RGB image path
RCM1 = 1 selects RGB, with PCLK, DE, HSYNC and VSYNC serving the image timing. RCM1 = 0 selects the MCU interface.
Mode selection is a hardware configuration as well as a firmware choice. The module’s pin assignment and initialization must describe the same display connection.
Display-mode reference →Power for the image and backlight
Logic voltage is 2.5–4.2 V, with 3.3 V typical and 1.5 mA typical digital operating current at VDD = 3.3 V. The three-LED backlight uses 3.2 V typical forward voltage and 60 mA typical forward current.
Luminance is 300 cd/m² minimum and 360 cd/m² typical. Contrast is 400:1 minimum and 500:1 typical. The 1.5 mA figure describes the display electronics; backlight current is a separate load in the system power budget.
Response time for a touch interface
The optical response of the TFT is one component of the complete user-interface response. Touch sampling, application processing and image transfers add their own timing.
8 ms typical at 25 °C
Combined rising and falling optical response is 8 ms typical and 16 ms maximum. This specification applies to the liquid-crystal transition.
80% minimum uniformity
The illumination-uniformity specification complements the minimum and typical luminance figures; it does not describe touch accuracy.
Directional viewing envelope
Top, left and right angles are 35° minimum and 45° typical. The bottom direction is 10° minimum and 20° typical.
For a touch-operated product, the installed viewing angle and the host’s coordinate mapping should use the same physical screen orientation. The preferred viewing direction is 12 o’clock.
Optical-response reference →Product Questions
Does the module output ready-made I²C touch coordinates?
No. Pins 41–44 expose XR, YD, XL and YU resistive electrodes. A separate acquisition circuit reads the panel, and the host application calibrates the resulting coordinates to the installed orientation.
Does changing from MCU to RGB alter the touch connection?
The four touch terminals retain their roles. RGB image operation uses RCM1 = 1 and the pixel/timing connections, while touch acquisition remains on XR/YD/XL/YU. Configure the display and touch paths separately.
Can the non-touch assembly dimensions be reused?
Use the DM-TFT18-310 mechanical drawing for the complete touch stack and FPC route. This SKU is specified at 9.0 g. A common resolution or controller does not establish the same enclosure fit as a non-touch panel.
Support for Your Display Project
Resistive-touch integration
For DM-TFT18-310 touch support, provide the XR/YD/XL/YU wiring, acquisition-circuit model and coordinate orientation. Include the selected image interface separately so touch measurements can be distinguished from display transfers.
Complete touch assembly
Specify the 9.0 g touch version and the enclosure space around the FPC when requesting a quote. Evaluate the sample with the intended touch-reading circuit and installed screen orientation.
Download Official Datasheets & Resources
The DM-TFT18-310 datasheet identifies the four touch electrodes, selectable image interfaces and complete touch assembly. The DmTftLibrary is provided as a separate software resource.