ET6226M from UMW, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	GR1	output	Grid 1 (bit) LED low-side drive output; also used as keyboard scanning output for column/grid 1. Bit drive current is at least 150 mA.
2	CLK	input	Serial clock input for the two-wire bus interface. Internal pull-up resistor. Data on DAT is sampled while CLK is high; DAT transitions occur while CLK is low.
3	DAT	bidirectional	Serial data input/output for the two-wire bus interface. Open-drain style output (built-in drain-mode pull-on). Carries command, display data, and returned key codes.
4	GND	power_in	Ground reference pin (0 V) for the device.
5	GR2	output	Grid 2 (bit) LED low-side drive output; also used as keyboard scanning output. Bit drive current is at least 150 mA.
6	GR3	output	Grid 3 (bit) LED low-side drive output; also used as keyboard scanning output. Bit drive current is at least 150 mA.
7	GR4	output	Grid 4 (bit) LED low-side drive output; also used as keyboard scanning output. Bit drive current is at least 150 mA.
8	SG1/KS1	bidirectional	Segment 1 LED high-side drive output (>=25 mA); also used as key-scan input row 1 during keyboard scanning, active-high with internal pull-down.
9	SG2/KS2	bidirectional	Segment 2 LED high-side drive output (>=25 mA); also used as key-scan input row 2, active-high with internal pull-down.
10	VCC	power_in	Positive supply pin. Operating range 3.0 V to 5.5 V. Absolute maximum -0.5 V to 6.5 V; max supply current ICC = 150 mA.
11	SG3/KS3	bidirectional	Segment 3 LED high-side drive output (>=25 mA); also used as key-scan input row 3, active-high with internal pull-down.
12	SG4/KS4	bidirectional	Segment 4 LED high-side drive output (>=25 mA); also used as key-scan input row 4, active-high with internal pull-down.
13	SG5/KS5	bidirectional	Segment 5 LED high-side drive output (>=25 mA); also used as key-scan input row 5, active-high with internal pull-down.
14	SG6/KS6	bidirectional	Segment 6 LED high-side drive output (>=25 mA); also used as key-scan input row 6, active-high with internal pull-down.
15	SG7/KS7	bidirectional	Segment 7 LED high-side drive output (>=25 mA); also used as key-scan input row 7, active-high with internal pull-down.
16	DP/KP	output	Segment/Bit output - LED segment drive output (typically the decimal point in 7-segment mode) or the 8th segment in 8-segment mode; also serves as keyboard-symbol output. Function depends on the 7-segment vs 8-segment mode selection register bit.

Key specifications

Parameter	Value
Manufacturer	UMW
Package	SOP-16
Category	LED-drv
Pins	16

CAD (KiCad official)

Symbol: ET6226M
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`et6226m.step`	217 KB	You want the bare part, or you mark your own boards.
`et6226m-etched.step`	2.0 MB	You want the part with `ET6226M` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 508 faces against 267 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: UMW datasheet (14 pp, sha256 bc228d99341777a6, retrieved 2026-08-17, tier: lcsc)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF