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ABOC HBGR32L two-wire IC (18 mA)

SPI RGB · American Bright Optoelectronics · aboc

Channels
RGB
Bits / channel
8
Supply
4.5–5.5 V
PWM
20 kHz
Backup data
no
Packages
1

Datasheets disagree on the colour order inside the 32-bit LED frame. BB- HBGR32L-3-TRB-8 Ver2.0 (p4) draws ‘Sign / Global / Red / Blue / Green’ and ‘R7R6…R1R0 B7B6…B1B0 G7G6…G1G0’; BL-HBGR32L-3-TRB-8 Ver2.2 (p4) draws ‘BLUE / Green / Red’ and ‘B7…B0 G7…G0 R7…R0’, which is also the ‘BGR’ of the part number. They also disagree on VIH (3.0 V against 0.7 x VCC) and on the reliability failure criterion (Iv below S x 0.7 against S x 0.5). The BB sheet is the later revision (2021-04-07) but carries the lower version number (2.0) against BL 2.2 (2021-03-31).

Refresh & flicker

Constant-current 18 mA per channel (17-19 mA), 5-bit global brightness (32 steps of 1/31) and 8-bit grey scale per colour; self-detection signal and an option of positive or negative output (‘Choose positive output or negative output RGB tri-color LED output’). DIN high level: 3.0 V min on the BB- sheet, 0.7 x VCC on the BL- sheet.

Frame format

ABOC HBGR32L two-wire IC (18 mA) SPI frameABOC HBGR32L two-wire IC (18 mA) 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 ↗ — — — — — — — —
Clock and data: no bit timing. Clock 0-5 MHz typical, 15 MHz maximum; clock high and low width >=30 ns, data set-up >=10 ns, data hold >=5 ns; PWM 20 kHz; static 0.5 mA; output 17 / 18 / 19 mA. Frame (p4): 32 zero bits start, per LED ‘111’ + 5-bit global brightness + three 8-bit values, 32 one bits end frame.

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 is APA102-shaped (32 zero bits, 111 + 5-bit brightness + three 8-bit values, 32 one bits) and the sheet shows the same SDI/CKI waveform. The two sheets disagree about the colour order, and neither names APA102, so only the frame structure is compared. source ↗

Library support

Not checked against FastLED, Adafruit or WLED 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.

  • 2017-11-09 datasheet revision Bright LED BL-HBGR32L-3-TRB-8 revision table: 'Initial Released 1.0 2017/11/9' ↗ day