# SC18IM704PWJ

**NXP Semicon** · Interface - Specialized · TSSOP-16

SC18IM704PWJ from NXP Semicon, in a TSSOP-16. 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 | SDA | bidirectional | I2C-bus data pin. |
| 2 | SCL | output | I2C-bus clock output. |
| 3 | GPIO6 | bidirectional | Programmable I/O pin which must be pulled HIGH with a resistor and must not be held LOW at power on or reset. |
| 4 | RESET | input | Hardware reset input. |
| 5 | GPIO7 | bidirectional | Programmable I/O pin. |
| 6 | GPIO3 | bidirectional | Programmable I/O pin. |
| 7 | GPIO2 | bidirectional | Programmable I/O pin. |
| 8 | GPIO4 | bidirectional | Programmable I/O pin. |
| 9 | GPIO0 | bidirectional | Programmable I/O pin. |
| 10 | RX | input | RS-232 receive input and wake-up; the command 0x5A 0xA5 puts the device into Deep Power-down mode, which it exits when RX is driven LOW. |
| 11 | TX | output | RS-232 transmit output. |
| 12 | VDD | power_in | Power supply. |
| 13 | VSS | power_in | Ground. |
| 14 | GPIO5 | bidirectional | Programmable I/O pin. |
| 15 | VREFP | input | Connect to VDD. |
| 16 | GPIO1 | bidirectional | Programmable I/O pin. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | NXP Semicon |
| Package | TSSOP-16 |
| Category | Communication Interface Chip/UART/485/232 |
| Pins | 16 |

## CAD (KiCad official)

- Symbol: `SC18IM704PWJ`
- Footprint: `Package_SO:TSSOP-16_4.4x5mm_P0.65mm`
- 3D model: TSSOP-16 (KiCad packages3D, STEP)
- 3D model files: `sc18im704pwj-etched.step` / `sc18im704pwj-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sc18im704pwj.step` / `sc18im704pwj.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [NXP Semicon datasheet](https://www.nxp.com/docs/en/data-sheet/SC18IM704PWJ.pdf) (28 pp, sha256 `6063b8045a9419c3`, retrieved 2026-10-28, tier: manufacturer)
- **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/sc18im704pwj-datasheet.pdf)