# NCA1021-Q1SPR

**NOVOSENSE(纳芯微)** · LIN Transceivers · SOP-8

NCA1021-Q1SPR from NOVOSENSE(纳芯微), in a SOP-8. 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 | RXD | output | Receive data output (open-drain); active LOW after a wake-up event. |
| 2 | SLP_N | input | Sleep control input (active LOW); controls inhibit output and resets wake-up source flag on TXD and wake-up request on RXD. |
| 3 | WAKE_N | input | Local wake-up input (active LOW); negative edge triggered. |
| 4 | TXD | input | Transmit data input; active LOW output after a local wake-up event. |
| 5 | GND | power_in | Ground. |
| 6 | LIN | bidirectional | LIN bus line input/output. |
| 7 | VBAT | power_in | Battery supply voltage. |
| 8 | INH | output | Battery related inhibit output for controlling an external voltage regulator; active HIGH after a wake-up event. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | NOVOSENSE(纳芯微) |
| Package | SOP-8 |
| Category | Interface |
| Pins | 8 |

## CAD (KiCad official)

- Symbol: `NCA1021-Q1SPR`
- Footprint: `Package_SO:SOIC-8_3.9x4.9mm_P1.27mm`
- 3D model: SOP-8 (KiCad packages3D, STEP)
- 3D model files: `nca1021-q1spr-etched.step` / `nca1021-q1spr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `nca1021-q1spr.step` / `nca1021-q1spr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [NOVOSENSE(纳芯微) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836447961550848) (22 pp, sha256 `4a4c6d1a38ca284c`, retrieved 2026-10-18, tier: lcsc)
- **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/nca1021-q1spr-datasheet.pdf)