TM1814 Pixel Protocol
Manufacturer: Titan Micro Electronics
A single-wire, self-clocking RGBW pixel protocol with per-channel constant-current drive and a wide 5 to 32V operating range.
Specifications
| Clock Type | Data-Only |
| Color Resolution | 8 Bits |
| Physical Package | SOP8 |
| RGB | No |
| RGBW | Yes |
| Output Pixel Voltage | 5 - 32V |
| PWM Rate | 1000Hz |
| Suitable Camera | Up to 34fps |
| Redundant Data Line | No |
Strengths
- RGBW output with a dedicated white channel, controlled at 8 bits (256 levels) per channel across all four channels for accurate whites, pastels and tints that a three-channel RGB chip cannot mix directly.
- Wide 5 to 32V output pixel voltage lets integrators run higher-voltage strings, reducing voltage drop and colour shift over longer cable runs, all on a single self-clocking data line with no separate clock conductor.
- Per-channel constant-current drive (a well-established TM1814 feature) holds brightness consistent from pixel to pixel and helps protect the LEDs against supply variation.
Limitations
- Single-wire, self-clocking data is timing-sensitive (WS2812-style), and with no redundant data line a single failed pixel or broken data joint drops every pixel downstream of the fault.
- 1000Hz PWM is comfortably flicker-free to the eye and camera-safe up to about 34fps, but it is a modest refresh rate: it is not intended for very high-speed cinematography beyond that margin, and higher numbers would add little practical benefit here anyway.
- 8-bit per-channel resolution limits fine low-end gradient smoothness compared with higher-bit-depth chips, which can show as banding in slow, very dark fades.
Overview
The TM1814 is a single-wire, self-clocking addressable pixel protocol from Titan Micro Electronics. Unlike RGB-only chips, it drives four channels (RGBW) at 8 bits each, adding a dedicated white output for cleaner pastels and tints. Its wide 5 to 32V output pixel voltage suits higher-voltage strings over longer runs with less voltage drop, and each channel uses constant-current drive for even brightness across a string. At 1000Hz PWM it is comfortably flicker-free to the eye and camera-safe up to about 34fps for typical use. 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.