IM1 = 0
IM0 = 0 selects 8-bit parallel operation. IM0 = 1 selects the 16-bit parallel bus.
1.77" TFT Display 128x160 - SPI, MCU, RGB
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DM-TFT18-309
1.77" TFT Display · 128 × 160 · MCU / SPI / RGB
Choose the image connection to suit your host architecture. DM-TFT18-309 is a 1.77-inch non-touch TFT with MCU, serial and RGB options, a 128 × 160 matrix and a 5.9 g assembly.
Its ILI9163 controller and hardware mode pins define the selected connection. The three-LED backlight is rated at 300 cd/m² minimum and 360 cd/m² typical luminance.
Resolution128 × 160
InterfaceMCU / SPI / RGB
Controller / panelILI9163
TouchNo touch
＋ Click to enlargeMCU, serial and RGB connection options
The ILI9163 display supports parallel MCU, 3-wire or 4-wire serial, and 16-bit or 18-bit RGB connections. Parallel widths of 8, 9, 16 and 18 bits are selected through IM0 and IM1.
IM2 selects parallel or serial operation, RCM1 selects RGB or MCU operation, and SPI4W selects the serial format. The selected mode defines the data and control roles of the shared pins.
Parallel bus width at a glance
IM1 and IM0 select the width of the MCU data bus. This hardware selection is part of the full interface configuration, alongside IM2, RCM1 and SPI4W.
IM1 = 1
IM0 = 0 selects 9-bit parallel operation. IM0 = 1 selects the 18-bit parallel bus.
MCU / serial / RGB selection
IM2 = 1 selects parallel and IM2 = 0 serial. RCM1 selects MCU at 0 and RGB at 1; SPI4W selects 3-wire serial at 1 and 4-wire serial at 0.
The complete mode-pin combination defines the connection. The parallel-width selection on its own is not a complete serial or RGB configuration.
Interface-selection reference →Bring up the selected interface
The physical connection and initialization sequence work together to produce the image.
Choose the host data path
Use command and pixel transfers for MCU or serial operation. For RGB operation, the host also provides the pixel clock, synchronization and data-enable signals.
Match the selected hardware mode
Set the host pin assignment and transfer method to match IM0, IM1, IM2, RCM1 and SPI4W for the intended interface.
Keep the module pinout in view
The shared pins change roles with the interface. Use the connection reference alongside the mode settings, including the specified treatment of unused pins.
Signal roles change with the interface
The 45-pin connector reuses data positions across MCU, serial and RGB modes. Its unused-pin instructions are specific to the selected connection.
Serial data on D0
D0 provides the serial input/output signal in serial mode. D17–D1 are unused in that mode and are specified to connect to ground.
RGB timing group
PCLK, DE, HSYNC and VSYNC provide RGB timing. When unused, these timing pins are specified at ground level.
Read and reset controls
The read-enable pin is connected to VDD when readback is unused. RESET is active low, and CS enables the selected display at a low level.
Keeping mode selection and unused-pin treatment together avoids treating the same connector position as a fixed function in every mode. The pin reference provides the complete connection for this SKU.
Mode-dependent pin reference →Technical Specifications
| Parameter | Specification |
|---|---|
| Product model | DM-TFT18-309 |
| 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 | No 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) |
A three-LED backlight with a separate logic supply
The panel logic uses 3.3 V typical within a 2.5–4.2 V range, with 1.5 mA typical operating current at 3.3 V. LEDK and LEDA1–LEDA3 connect the three-LED backlight.
The backlight has a 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.
Non-touch panel for a compact portrait interface
DM-TFT18-309 provides a 1.77-inch, 128 × 160 image in 65K colours and weighs 5.9 g. Pins 41–44 are no connection on this non-touch model.
The preferred viewing direction is 12 o’clock, with typical angles of 45° top/left/right and 20° bottom. The mechanical drawing provides the panel outline and 45-pin flexible connection for the host assembly.
Optical behaviour of the 1.77-inch panel
The panel has an 8 ms typical optical response at 25 °C, with a 16 ms maximum. Its directional viewing-angle limits complement the 360 cd/m² typical luminance specification.
80% minimum uniformity
The optical uniformity figure describes the illumination across the panel. It is a different measure from contrast or centre luminance.
35° minimum top / left / right
Typical viewing angles in these three directions are 45°. The bottom direction is specified at 10° minimum and 20° typical.
400:1 minimum contrast
Typical contrast is 500:1. These are optical ratios; the display interface and host software determine how image data is transferred.
The screen’s preferred viewing direction is 12 o’clock. For fixed installations, the user’s line of sight and the module’s physical orientation should be considered together.
Optical-characteristics reference →Product Questions
Which settings select 4-wire serial operation?
For the MCU/serial image path, RCM1 = 0 selects MCU operation, IM2 = 0 selects serial, and SPI4W = 0 selects 4-wire serial. Use the matching serial pin assignment and initialization; IM0/IM1 alone do not select this mode.
Where does serial data connect?
In MCU serial mode, D0 serves as serial input/output. D17–D1 connect to ground, and unused PCLK, DE, HSYNC and VSYNC are also held at ground according to the module pin table.
Can the XR/YD/XL/YU-labelled positions provide touch?
No. Pins 41–44 are NC on DM-TFT18-309. This is the 5.9 g non-touch assembly; those labels do not establish an integrated touch function.
Support for Your Display Project
Mode selection and initialization
For DM-TFT18-309 interface support, include IM0, IM1, IM2, RCM1 and SPI4W states along with the host pin map. Identify whether the issue concerns serial commands, parallel transfers or RGB timing.
Non-touch module selection
Use the 5.9 g non-touch assembly and its 45-pin drawing as the basis of your sample request. Include the intended viewing orientation, selected interface and quantity for the project.
Download Official Datasheets & Resources
The DM-TFT18-309 PDF defines its 45-pin non-touch connection and mode selection.