# GN1623L100

**GN Semic** · LCD Drivers · LQFP-100

GN1623L100 from GN Semic, in a LQFP-100. 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 | CS | input | Chip select with internal pull-up; the communication interface is enabled when this pin is low. |
| 2 | RD | input | Serial read control input with internal pull-up; data is output on the falling edge. |
| 3 | WR | input | Serial write control input with internal pull-up; input data is latched on the rising edge. |
| 4 | DATA | bidirectional | Serial data input/output port with internal pull-up. |
| 5 | VSS | power_in | Ground (地). |
| 6 | OSCI | input | Leave floating when using the internal clock; with an external clock it can be driven by a clock signal or connected to a 32.768 kHz crystal between OSCI and OSCO. |
| 7 | OSCO | output | When an external crystal is used, connect a 32.768 kHz crystal between OSCI and OSCO. |
| 8 | VDD | power_in | Positive supply; the operating voltage range is 2.7 V to 5.5 V. |
| 9 | VLCD | input | LCD operating voltage input; the LCD operating voltage is adjusted through this pin. |
| 10 | IRQ | output | Time-base or WDT overflow output using an NMOS open-drain structure. |
| 11 | BZ | output | Buzzer drive output providing a 2 kHz or 4 kHz frequency signal to drive a buzzer directly. |
| 12 | BZ | output | Second buzzer drive output of the BZ/BZ pair providing a 2 kHz or 4 kHz frequency signal to drive a buzzer directly. |
| 13 | T1 | input | Marked as not connected (不连接) in the pin table; no function is assigned. |
| 14 | T2 | input | Marked as not connected (不连接) in the pin table; no function is assigned. |
| 15 | T3 | input | Marked as not connected (不连接) in the pin table; no function is assigned. |
| 16 | COM0 | output | LCD common driver output COM0. |
| 17 | COM1 | output | LCD common driver output COM1. |
| 18 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 19 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 20 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 21 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 22 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 23 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 24 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 25 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 26 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 27 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 28 | COM2 | output | LCD common driver output COM2. |
| 29 | COM3 | output | LCD common driver output COM3. |
| 30 | COM4 | output | LCD common driver output COM4. |
| 31 | COM5 | output | LCD common driver output COM5. |
| 32 | COM6 | output | LCD common driver output COM6. |
| 33 | COM7 | output | LCD common driver output COM7. |
| 34 | SEG0 | output | LCD segment driver output SEG0. |
| 35 | SEG1 | output | LCD segment driver output SEG1. |
| 36 | SEG2 | output | LCD segment driver output SEG2. |
| 37 | SEG3 | output | LCD segment driver output SEG3. |
| 38 | SEG4 | output | LCD segment driver output SEG4. |
| 39 | SEG5 | output | LCD segment driver output SEG5. |
| 40 | SEG6 | output | LCD segment driver output SEG6. |
| 41 | SEG7 | output | LCD segment driver output SEG7. |
| 42 | SEG8 | output | LCD segment driver output SEG8. |
| 43 | SEG9 | output | LCD segment driver output SEG9. |
| 44 | SEG10 | output | LCD segment driver output SEG10. |
| 45 | SEG11 | output | LCD segment driver output SEG11. |
| 46 | SEG12 | output | LCD segment driver output SEG12. |
| 47 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 48 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 49 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 50 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 51 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 52 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 53 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 54 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 55 | SEG13 | output | LCD segment driver output SEG13. |
| 56 | SEG14 | output | LCD segment driver output SEG14. |
| 57 | SEG15 | output | LCD segment driver output SEG15. |
| 58 | SEG16 | output | LCD segment driver output SEG16. |
| 59 | SEG17 | output | LCD segment driver output SEG17. |
| 60 | SEG18 | output | LCD segment driver output SEG18. |
| 61 | SEG19 | output | LCD segment driver output SEG19. |
| 62 | SEG20 | output | LCD segment driver output SEG20. |
| 63 | SEG21 | output | LCD segment driver output SEG21. |
| 64 | SEG22 | output | LCD segment driver output SEG22. |
| 65 | SEG23 | output | LCD segment driver output SEG23. |
| 66 | SEG24 | output | LCD segment driver output SEG24. |
| 67 | SEG25 | output | LCD segment driver output SEG25. |
| 68 | SEG26 | output | LCD segment driver output SEG26. |
| 69 | SEG27 | output | LCD segment driver output SEG27. |
| 70 | SEG28 | output | LCD segment driver output SEG28. |
| 71 | SEG29 | output | LCD segment driver output SEG29. |
| 72 | SEG30 | output | LCD segment driver output SEG30. |
| 73 | SEG31 | output | LCD segment driver output SEG31. |
| 74 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 75 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 76 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 77 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 78 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 79 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 80 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 81 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 82 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 83 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |
| 84 | SEG32 | output | LCD segment driver output SEG32. |
| 85 | SEG33 | output | LCD segment driver output SEG33. |
| 86 | SEG34 | output | LCD segment driver output SEG34. |
| 87 | SEG35 | output | LCD segment driver output SEG35. |
| 88 | SEG36 | output | LCD segment driver output SEG36. |
| 89 | SEG37 | output | LCD segment driver output SEG37. |
| 90 | SEG38 | output | LCD segment driver output SEG38. |
| 91 | SEG39 | output | LCD segment driver output SEG39. |
| 92 | SEG40 | output | LCD segment driver output SEG40. |
| 93 | SEG41 | output | LCD segment driver output SEG41. |
| 94 | SEG42 | output | LCD segment driver output SEG42. |
| 95 | SEG43 | output | LCD segment driver output SEG43. |
| 96 | SEG44 | output | LCD segment driver output SEG44. |
| 97 | SEG45 | output | LCD segment driver output SEG45. |
| 98 | SEG46 | output | LCD segment driver output SEG46. |
| 99 | SEG47 | output | LCD segment driver output SEG47. |
| 100 | NC | unconnected | Marked NC in the LQFP100 pin diagram; no function is assigned. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | GN Semic |
| Package | LQFP-100 |
| Category | LED Drivers |
| Pins | 100 |

## 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 (absolute maximum) | VDD | -0.3 |  | 7 | V |  | 5 |
| Operating temperature (ambient) | Tamb | -40 |  | 105 | °C |  | 5 |
| Storage temperature | Tstg | -50 |  | 125 | °C |  | 5 |
| Soldering temperature (LQFP) | TL |  |  | 260 | °C | 10 s | 5 |
| Operating voltage | VDD | 2.7 |  | 5.5 | V |  | 6 |
| System clock (internal RC oscillator) | fSYS1 | 24 | 32 | 40 | kHz | 5V, internal RC oscillator | 7 |
| System clock (external clock source) | fSYS2 |  | 32 |  | kHz | external clock source | 7 |
| LCD frame frequency (internal RC oscillator) | fLCD1 | 70 | 85 | 100 | Hz | 5V, internal RC oscillator | 7 |
| LCD frame frequency (external clock source) | fLCD2 |  | 85 |  | Hz | external clock source | 7 |
| Serial data clock (WR) | fCLK1 |  |  | 150 | kHz | 3V, duty cycle 50% | 7 |
| Serial data clock (WR) | fCLK1 |  |  | 300 | kHz | 5V, duty cycle 50% | 7 |
| Serial data clock (RD) | fCLK2 |  |  | 75 | kHz | 3V, duty cycle 50% | 7 |
| Serial data clock (RD) | fCLK2 |  |  | 150 | kHz | 5V, duty cycle 50% | 7 |
| WR input pulse width (write mode) | tCLK | 3.34 |  | 125 | us | 3V, write mode | 7 |
| RD input pulse width (read mode) | tCLK | 6.67 |  |  | us | 3V, read mode | 7 |
| WR input pulse width (write mode) | tCLK | 1.67 |  | 125 | us | 5V, write mode | 7 |
| RD input pulse width (read mode) | tCLK | 3.34 |  |  | us | 5V, read mode | 7 |
| Serial data clock rise/fall time | tr,tf |  | 120 | 160 | ns | Figure 1 | 7 |
| Serial data to WR/RD clock setup time | tsu | 60 | 120 |  | ns | Figure 2 | 7 |
| Serial data to WR/RD clock hold time | th | 1000 | 1200 |  | ns | Figure 2 | 7 |
| CS to WR/RD clock setup time | tsu1 | 500 | 600 |  | ns | Figure 3 | 7 |
| CS to WR/RD clock hold time | th1 | 1000 | 1200 |  | ns | Figure 3 | 7 |
| Serial interface reset pulse width | tCS | 700 | 800 |  | ns | CS | 7 |
| Buzzer frequency (2 kHz setting) | fTONE | 1.5 | 2 | 2.5 | kHz | 5V, internal RC oscillator | 7 |
| Buzzer frequency (4 kHz setting) | fTONE | 3 | 4 | 5 | kHz |  | 7 |
| VDD OFF time | tOFF | 20 |  |  | ms | VDD falls to 0 V | 7 |
| VDD rise slew rate | tSR |  | 0.05 |  | V/ms |  | 7 |
| Reset delay time | tRSTD |  | 1 |  | ms |  | 7 |
| Pull-up resistance (DATA, WR, CS, RD) |  | 100 | 200 | 300 | kΩ | 3V, DATA, WR, CS, RD | 6 |
| Pull-up resistance (DATA, WR, CS, RD) |  | 50 | 100 | 150 | kΩ | 5V, DATA, WR, CS, RD | 6 |

## CAD (KiCad official)

- Symbol: `GN1623L100`
- Footprint: `Package_QFP:LQFP-100_14x14mm_P0.5mm`
- 3D model: LQFP-100 (KiCad packages3D, STEP)
- 3D model files: `gn1623l100-etched.step` / `gn1623l100-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `gn1623l100.step` / `gn1623l100.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [GN Semic datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603071248763138048) (14 pp, sha256 `459b989e3fa16ff2`, 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`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/gn1623l100-datasheet.pdf)