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Guiguang GL01H (unnamed IC)

1-wire RGB · Guiguang Light · guiguang

Channels
RGB
Bits / channel
8
Supply
4.5–5.5 V
PWM
1.5 kHz
Backup data
no
Packages
3

The driver in Guiguang’s 5050, 3528 and 6028 “Fantasy colour” (幻彩) LEDs. None of the three sheets names the IC; “01H” appears only in the model number (GL5050RGB01H-T). The sheets are bilingual Chinese and English, dated May 2023, with a “copper bracket” (lead frame) noted for the 5050.

Datasheets disagree on the supply and threshold numbers between package sheets (see the refresh notes); the timing windows are identical across the 5050, 3528 and 6028 sheets. The GL5050 pin diagram numbers pins 1 to 4 on the drawing; the GL3528 drawing labels two pads “1” (a typo for 2 DOUT) while its table is correct.

Refresh & flicker

PWM 1.5 kHz, data rate 800 kHz, forwarding delay 0.16 us typical / 0.30 us maximum (page 5). The 5050 sheet gives a 4.5-5.5 V supply, 3.1 V / 1.5 V input thresholds and 0.45 “uA” quiescent (unit as printed, probably mA); the 3528 sheet gives 4-5.3 V, 2.6 / 1.6 V and 0.5 uA, and the 6028 sheets 3.5-5.5 V, 3.1 / 1.5 V and 0.45 uA. The recorded range is the 5050 sheet’s. The sheet says at least 1024 cascaded pixels at 30 frames per second and a scan frequency of at least 400 Hz.

Timing

Guiguang GL01H (unnamed IC) bit timingGuiguang GL01H (unnamed IC) bit timing: a zero bit is 300 nanoseconds high then 900 low; a one bit is 600 high then 600 low; reset 180 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1200 nsbit 1 period 1200 nsT0H 300 nsT1H 600 nsT0L 900 nsT1L 600 ns"0" bit"1" bit020040060080010001200140016001800200022002400time, ns2 · One frame: 24 bits, most-significant bit firstDIN170110010007100110101700101100bitch 1 · 8 bitsch 2 · 8 bitsch 3 · 8 bitsChannel order not recorded for this protocol · frame = 24 × ~1200 ns ≈ 28.8 µs · example data, first bits 1 0 1 …3 · RESET / latchlast bits of frame 1first bits of frame 2LEDs latch the data they receivedRESET: DIN low ≥ 180 µs (not to scale)4 · Cascade: each DOUT feeds the next DINMCULED 1DINDOUTLED 2DINDOUTLED NDINDOUTLED 1 keeps the first 24 bits, re-shapes the signal and sends the rest out on DOUT;LED 2 keeps the next 24, and so on. The last LED's DOUT is left unconnected.
T0H 300 / T0L 900 · T1H 600 / T1L 600 ns · period 1200 ns · reset 180 µs source: datasheet
SourceT0HT0LT1HT1LPeriodRateReset±
datasheet ↗ 300 ns 900 ns 600 ns 600 ns 1200 ns 833 kHz 180 µs —
Min/typ/max table: T0H 250/300/350 ns, T0L 600/900/950 ns, T1H 550/600/650 ns, T1L 300/600/650 ns, reset at least 180 us. Programs must use a symbol period of at least 1.2 us and keep the low time of a 0 or 1 code under 20 us. 24 bits per LED, high bit first, in RGB order (the sheet says “sent in RGB order” - not the GRB order of most 5050 parts).

Clones & compatibility

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

  • electrically similar SK6812

    Inferred from the printed numbers only; no Guiguang sheet names SK6812 or any IC. The 2015 OPSCO SK6812 table (T0H 300, T0L 900, T1H 600, T1L 600 ns +/-150) sits inside all four GL01H windows, as does the 5050 pin order. But the GL sheets send RGB (SK6812: GRB), reset after 180 us (SK6812: 80 us in 2015, above 200 us in 2025) and a 4.5-5.5 V supply. A GRB controller will swap red and green. source ↗

  • electrically similar Guiguang GL2121 (unnamed IC)

    The GL2121 sheet prints a different timing table (T0H 250 typ / 300 max, T0L 1000 typ, T1H 620-1000, T1L 400 typ ns, reset 80 us) and a 3.5-5.5 V supply; see that protocol. source ↗

  • electrically similar of this Guiguang GL2121 (unnamed IC)

    Same maker, same RGB order and 800 kHz rate, but a different timing table from the 5050 / 3528 / 6028 sheets (T1H 850 against 600 ns typical, T0L 1000 against 900, reset 80 against 180 us) and a lower-voltage supply range.

Library support

Not checked against library source.

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.

  • 2023-05 datasheet revision Guiguang GL5050RGB01H-T specification, release date (发布日期) May 2023 on the cover ↗ month