component
GN1621S28
Public Made by Adomby adom
GN Semic LCD Drivers, SOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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Datasheet
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README
markdownGN1621S28
GN Semic · LCD Drivers · SOP-28
GN1621S28 from GN Semic, in a SOP-28. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 2 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 3 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 4 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 5 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 6 | /CS | input | Chip select, active low; when held high, data and command transfers are invalid and the serial interface is reset, and it must be pulsed high to initialize before a mode command or mode change. |
| 7 | /WR | input | Write clock input; data, address and command on DATA are written into the GN1621 on the rising edge of /WR. |
| 8 | DATA | bidirectional | Serial data input/output for read and write data and for write commands; requires an external pull-up resistor. |
| 9 | VSS | power_in | System ground. |
| 10 | VLCD | power_in | LCD power supply input used to set the LCD operating voltage; VLCD must be lower than VDD. |
| 11 | VDD | power_in | System power supply positive; operating voltage is 2.0 V to 5.5 V per the DC electrical table. |
| 12 | COM0 | output | LCD common drive output (COM0); 2, 3 or 4 commons are selectable by command. |
| 13 | COM1 | output | LCD common drive output (COM1); 2, 3 or 4 commons are selectable by command. |
| 14 | COM2 | output | LCD common drive output (COM2); 2, 3 or 4 commons are selectable by command. |
| 15 | COM3 | output | LCD common drive output (COM3); 2, 3 or 4 commons are selectable by command. |
| 16 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 17 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 18 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 19 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 20 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 21 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 22 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 23 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 24 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 25 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 26 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 27 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
| 28 | SEG | output | LCD segment drive output; the segment index for this pin is not stated in the text. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | GN Semic |
| Package | SOP-28 |
| Category | LED Drivers |
| Pins | 28 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply voltage (VSS referenced) | -0.3 | 5.5 | V | VSS-0.3V~VSS+5.5V, referenced to VSS | 12 | ||
| Input voltage | -0.3 | V | VSS-0.3V~VDD+0.3V; min referenced to VSS, max is VDD+0.3V | 12 | |||
| 工作温度 (operating temperature) | -40 | 85 | ℃ | 12 | |||
| 储存温度 (storage temperature) | -50 | 125 | ℃ | 12 | |||
| 工作电压 (operating voltage) | VDD | 2 | 5.5 | V | 12 | ||
| 工作电流 (operating current) | IDD | 170 | uA | 不带负载，片内RC振荡器; VDD=3V | 12 | ||
| 工作电流 (operating current) | IDD | 220 | uA | 不带负载，片内RC振荡器; VDD=5V | 12 | ||
| 工作电流 (operating current) | IDD | 60 | uA | 不带负载，晶振; VDD=3V | 12 | ||
| 工作电流 (operating current) | IDD | 100 | uA | 不带负载，晶振; VDD=5V | 12 | ||
| 工作电流 (operating current) | IDD | 70 | uA | 不带负载，外部时钟源; VDD=3V | 12 | ||
| 工作电流 (operating current) | IDD | 140 | uA | 不带负载，外部时钟源; VDD=5V | 12 | ||
| 待机电流 (standby current) | ISTB | 0.1 | uA | 不带负载，省电模式; VDD=3V | 12 | ||
| 待机电流 (standby current) | ISTB | 0.3 | uA | 不带负载，省电模式; VDD=5V | 12 | ||
| 低电平输入电压 (low-level input voltage) | IL | 0 | 0.6 | V | DATA,/WR,/CS,/RD; VDD=3V | 12 | |
| 低电平输入电压 (low-level input voltage) | IL | 0 | 1 | V | DATA,/WR,/CS,/RD; VDD=5V | 12 | |
| 高电平输入电压 (high-level input voltage) | VIH | 2 | 3 | V | DATA,BZ,/BZ,/IRQ; VDD=3V | 12 | |
| 高电平输入电压 (high-level input voltage) | VIH | 3 | 5 | V | DATA,BZ,/BZ,/IRQ; VDD=5V | 12 | |
| Sink current (DATA, BZ, /BZ) | IOL1 | 2 | mA | VOL=0.3V; VDD=3V | 12 | ||
| Sink current (DATA, BZ, /BZ) | IOL1 | 4 | mA | VOL=0.5V; VDD=5V | 12 | ||
| Source current (DATA, BZ, /BZ) | IOH1 | -0.7 | mA | VOH=2.7V; VDD=3V | 12 | ||
| Source current (DATA, BZ, /BZ) | IOH1 | -2 | mA | VOH=4.5V; VDD=5V | 12 | ||
| COM 端漏电流 (COM sink current) | IOL2 | 150 | uA | VOL=0.3V; VDD=3V | 12 | ||
| COM 端漏电流 (COM sink current) | IOL2 | 250 | uA | VOL=0.5V; VDD=5V | 12 | ||
| COM 端源电流 (COM source current) | IOH2 | -120 | uA | VOH=2.7V; VDD=3V | 12 | ||
| COM 端源电流 (COM source current) | IOH2 | -200 | uA | VOH=4.5V; VDD=5V | 12 | ||
| SEG 端漏电流 (SEG sink current) | IOL3 | 120 | uA | VOL=0.3V; VDD=3V | 12 | ||
| SEG 端漏电流 (SEG sink current) | IOL3 | 200 | uA | VOL=0.5V; VDD=5V | 12 | ||
| SEG 端源电流 (SEG source current) | IOH3 | -70 | uA | VOH=2.7V; VDD=3V | 12 | ||
| SEG 端源电流 (SEG source current) | IOH3 | -100 | uA | VOH=4.5V; VDD=5V | 12 | ||
| 系统时钟 片内RC振荡器 (system clock, internal RC oscillator) | fSYS1 | 197 | 256 | 315 | kHz | VDD=3V; -40~85℃ | 13 |
| 串行接口复位脉冲宽度 (serial interface reset pulse width) | tCS | 4 | us | /RS | 13 |
CAD (KiCad official)
- Symbol:
GN1621S28 - Footprint:
Package_SO:SOP-28_8.4x18.16mm_P1.27mm - 3D model: SOP-28 (KiCad packages3D, STEP)
- 3D model files:
gn1621s28-etched.step/gn1621s28-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);gn1621s28.step/gn1621s28.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: GN Semic datasheet (18 pp, sha256
50e474dfb3bd2466, retrieved 2026-10-18, 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: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).