TM1903 Pixel Protocol
Manufacturer: Titan Micro Electronics
TM1903 is a single-wire, individually addressable 24-bit RGB pixel IC that self-clocks its data line in the style of the WS2812 family.
Specifications
| Clock Type | Data-Only |
| Color Resolution | 8 Bits |
| Physical Package | SOP8 |
| RGB | Yes |
| RGBW | No |
| Output Pixel Voltage | 5 - 24V |
| PWM Rate | 666Hz |
| Suitable Camera | Up to 23fps |
| Redundant Data Line | No |
Strengths
- Single-wire, self-clocking control: only data and power are routed, with no clock conductor to run, terminate, or fault, which simplifies cabling and connectors on long pixel runs.
- Integrated per-pixel IC delivering standard 24-bit RGB (8 bits per channel) with full individual addressability for smooth gradients and animation.
- Wide 5 to 24V pixel supply window: driving at a higher voltage reduces voltage drop and colour shift over long runs compared with 5V-only parts.
Limitations
- As a single-wire self-clocking protocol it is timing-sensitive: data-line length and signal integrity matter, and with no redundant data line a single failed pixel or joint drops everything downstream of it.
- 8-bit per-channel depth and a 666Hz PWM rate are adequate and camera-safe up to about 23fps, but leave little margin for high-frame-rate or slow-shutter cinematography, where higher-refresh parts are the better choice.
Overview
The TM1903 is a data-only, single-wire addressable RGB pixel driver in an SOP8 package. Each IC recovers timing from one data line (no separate clock conductor), latches 8 bits per channel for 24-bit colour, and forwards the remaining stream to the next pixel down the chain. It operates across a 5 to 24V pixel supply and runs a 666Hz PWM rate, comfortably flicker-free for the cameras it targets (up to 23fps). It is commonly attributed to Titan Micro Electronics. ENTTEC is not affiliated with Titan Micro Electronics.
Compatible ENTTEC controllers
Sku: 71521
Sku: 73539
Sku: 70067
Sku: 70068
Sku: 73-545
Sku: 73924
ENTTEC has been engineering lighting control in Australia since 1999, and shipping LED pixel controllers since the original Pixelator in 2014.