WL-ICLED (dual-wire)

SPI RGB · Wurth Elektronik · wl-icled

Channels
RGB
Bits / channel
8
Supply
3.3–5.5 V
PWM
20 kHz
Backup data
no
Packages
2

The clocked WL-ICLED. Mouser’s product page calls it “dual-wire” and claims up to 13x the single-wire data rate and FastLED compatibility; neither claim is in the datasheets, which only give the clock width minimum. Pinout differs from every APA102 package: 1 DIN, 2 CIN, 3 VSS, 4 VDD, 5 COUT, 6 DOUT on the 5050.

Refresh & flicker

PWM 20 kHz. Sleep mode (flag 0b101, current and PWM fields zero) draws 1 uA; wake-up takes about 1 ms after a new flag or a current selector other than 0xA0. The PLCC6 5050 and the 1.6 x 1.5 mm chip LED sheets give the same IC figures.

Frame format

WL-ICLED (dual-wire) SPI frameWL-ICLED (dual-wire) clocked frame: start frame, one 32-bit LED frame per pixel with brightness and colour bytes, and an end frame, plus data and clock waveforms1 · Frame stream (data clocked on CLK)Start frame32 × 0LED 132 bitsLED 232 bits…LED N32 bitsEnd frameclock ≥ N/2 edgeseach LED forwards what it does not keep on DO / CO2 · One LED frame: 32 bits, MSB first111brightch 1 8ch 2 8ch 3 83 marker bits (111), 5-bit global brightness 0–31, then 8-bit channels3 · DATA and CLK, first 8 bits of an LED frameDATACLK11110010111 markerbrightness bits 4..0data changes while CLK is low,LED samples on the rising edgeno fixed bit period: clock rateis set by the host
Frame layout: APA102-family 32-bit LED frames convention, see the protocol notes for end-frame differences
SourceT0HT0LT1HT1LPeriodRateReset±
datasheet ↗ — — — — — — — —
The sheet gives minimum clock widths only and no maximum clock rate.

Clones & compatibility

“Compatible” is never stated bare here — each relationship carries how strong the claim is, and what bites if you assume too much.

  • protocol compatible APA102

    The frame layout reads like the APA102's: 32-bit zero start frame, 3 flag bits, 5-bit global brightness, blue-green-red 8-bit values, N/2 end bits. The differences on paper are the flag decoding (0b101 puts the LED to sleep) and the 300 ohm series resistors on both lines in the reference circuit. Nothing here has been run against an APA102 driver. source ↗

Library support

Parts using this protocol

Dating evidence

Evidence, not a release date. A library commit proves the part existed by that date and says nothing about how long before.

  • 2024-07-05 datasheet revision Wurth WL-ICLED 1315050930246 and 1311610030140 datasheets, revision 001.000 ↗ day