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GN1622B

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by Ray

GN Semic LCD Drivers, LQFP-64(7x7). Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

GN1622B

GN Semic · LCD Drivers · LQFP-64(7x7)

GN1622B from GN Semic, in a LQFP-64(7x7). 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 /CS input Chip select input (internally pulled up). When /CS is high, GN1622 read/write is inhibited and the serial interface is reset; when /CS is low, data and commands are transferred.
2 NC unconnected Not connected.
3 /RD input Read clock (internally pulled up). Data from RAM is output on the falling edge of /RD.
4 /WR input Write clock (internally pulled up). Data is latched on the rising edge of /WR.
5 DATA bidirectional Serial data line (internally pulled up). Carries address, command, and RAM data bits.
6 VSS power_in Negative power supply / ground reference.
7 OSCI input External clock input. Nominal 32 kHz; on-chip RC oscillator runs at 22-40 kHz otherwise.
8 VDD power_in Positive power supply, 2.7-5.2 V operating range.
9 VLCD input LCD operating (bias) voltage input. Must be lower than VDD; typical application uses ~4 V from a 15 kΩ potentiometer at VDD=5 V.
10 /IRQ output Time-base / WDT overflow output, open-drain. Held low on WDT overflow until cleared.
11 BZ output Buzzer/tone output, non-inverted. Drives 2 kHz or 4 kHz for a piezo buzzer (complementary pair with /BZ).
12 NC unconnected Not connected.
13 /BZ output Buzzer/tone output, inverted. Complementary pair with BZ at 2 kHz/4 kHz.
14 T1 input Test pin (marked 未连接 / leave unconnected in normal operation).
15 T2 input Test pin (leave unconnected in normal operation).
16 T3 input Test pin (leave unconnected in normal operation).
17 COM0 output LCD common driver output 0 (1/8 duty, 1/4 bias).
18 COM1 output LCD common driver output 1.
19 NC unconnected Not connected.
20 COM2 output LCD common driver output 2.
21 COM3 output LCD common driver output 3.
22 COM4 output LCD common driver output 4.
23 COM5 output LCD common driver output 5.
24 COM6 output LCD common driver output 6.
25 COM7 output LCD common driver output 7.
26 SEG0 output LCD segment driver output 0.
27 SEG1 output LCD segment driver output 1.
28 SEG2 output LCD segment driver output 2.
29 SEG3 output LCD segment driver output 3.
30 SEG4 output LCD segment driver output 4.
31 SEG5 output LCD segment driver output 5.
32 SEG6 output LCD segment driver output 6.
33 NC unconnected Not connected.
34 NC unconnected Not connected.
35 NC unconnected Not connected.
36 SEG7 output LCD segment driver output 7.
37 SEG8 output LCD segment driver output 8.
38 SEG9 output LCD segment driver output 9.
39 SEG10 output LCD segment driver output 10.
40 SEG11 output LCD segment driver output 11.
41 SEG12 output LCD segment driver output 12.
42 SEG13 output LCD segment driver output 13.
43 SEG14 output LCD segment driver output 14.
44 SEG15 output LCD segment driver output 15.
45 SEG16 output LCD segment driver output 16.
46 SEG17 output LCD segment driver output 17.
47 SEG18 output LCD segment driver output 18.
48 SEG19 output LCD segment driver output 19.
49 NC unconnected Not connected.
50 NC unconnected Not connected.
51 NC unconnected Not connected.
52 NC unconnected Not connected.
53 SEG20 output LCD segment driver output 20.
54 SEG21 output LCD segment driver output 21.
55 SEG22 output LCD segment driver output 22.
56 SEG23 output LCD segment driver output 23.
57 SEG24 output LCD segment driver output 24.
58 SEG25 output LCD segment driver output 25.
59 SEG26 output LCD segment driver output 26.
60 SEG27 output LCD segment driver output 27.
61 SEG28 output LCD segment driver output 28.
62 SEG29 output LCD segment driver output 29.
63 SEG30 output LCD segment driver output 30.
64 SEG31 output LCD segment driver output 31.

Key specifications

Parameter Value
Manufacturer GN Semic
Package LQFP-64(7x7)
Category LED Drivers
Pins 64

Ordering variants

Same part, different packaging or reel option.

  • GN1622A
  • GN1622B
  • GN1622C

CAD (KiCad official)

  • Symbol: GN1622B
  • Footprint: Package_QFP:LQFP-64_7x7mm_P0.4mm
  • 3D model: LQFP-64(7x7) (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: GN Semic datasheet (17 pp, sha256 bf04bc20ce3a58f6, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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