ICM-42631

@@ -0,0 +1,53 @@+# ICM-42631++**TDK InvenSense** · Accelerometers · LGA-14(2.5x3)++ICM-42631 from TDK InvenSense, in a LGA-14(2.5x3). 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 | AP_SDO/AP_AD0 | bidirectional | AP SPI serial data output (4-wire SPI mode) or I3C/I2C slave address LSB. Pull-up/pull-down disabled by default; configurable via PIN1_PU_EN / PIN1_PD_EN (register 0x0Eh in Bank 3). |+| 2 | AUX1_SDIO/AUX1_SDI | bidirectional | AUX1 SPI serial data I/O (3-wire mode) or AUX1 SPI serial data input (4-wire mode). In single-interface mode, connect to VDDIO or GND. Pull-up configurable via PIN2_PU_EN. |+| 3 | AUX1_SCLK | input | AUX1 SPI serial clock. In single-interface mode, connect to VDDIO or GND. Pull-up configurable via PIN3_PU_EN. |+| 4 | INT1/INT | output | Interrupt 1 output; can be configured as push-pull or open-drain. In single-interface mode INT maps all interrupts to pin 4. Pull-down configurable via PIN4_PD_EN. |+| 5 | VDDIO | power_in | I/O power supply voltage, 1.71 V to 3.6 V DC. Requires a 10 nF X7R bypass capacitor (C3) to GND per typical operating circuit. |+| 6 | GND | power_in | Power supply ground return. |+| 7 | AUX2_CS/RESV | input | In triple-interface mode: AUX2 SPI chip select (active low). In single/dual-interface mode: RESV - must be connected to GND. Pull-up disabled by default in single/dual mode and enabled by default in triple mode. |+| 8 | VDD | power_in | Core analog supply voltage, 1.71 V to 3.6 V DC. Requires 0.1 µF (C1) and 2.2 µF (C2) X7R bypass capacitors to GND per typical operating circuit. |+| 9 | INT2/FSYNC/AUX2_SDIO | bidirectional | In single/dual-interface mode: INT2 interrupt output (push-pull or open-drain), or FSYNC frame sync input (tie to GND if unused). In triple-interface mode: AUX2 SPI serial data I/O. PIN9_AUX2_PD_EN must be 0 when triple-interface mode is used. |+| 10 | AUX1_CS/NC | input | AUX1 SPI chip select (active low) in dual- and triple-interface modes. Not connected in single-interface mode. Pull-up enabled by default in single-interface mode and disabled in dual/triple-interface mode; configurable via PIN10_PU_EN. |+| 11 | AUX1_SDO/AUX2_SCLK | bidirectional | In dual-interface mode: AUX1 SPI serial data output (4-wire); NC when 3-wire is used for AUX1. In triple-interface mode: AUX2 SPI serial clock. In single-interface mode: connect to VDDIO or NC. Pull-up configurable via PIN11_PU_EN. |+| 12 | AP_CS | input | AP SPI chip select (active low) when the host interface is SPI. Connect to VDDIO when using the I3C/I2C interface. Pull-up enabled by default; configurable via PIN12_PU_EN / PIN12_PD_EN. |+| 13 | AP_SCL/AP_SCLK | input | AP I3C/I2C serial clock (AP_SCL) or AP SPI serial clock (AP_SCLK), selected by host interface mode. Supports 12.5 MHz I3C, 1 MHz I2C, and 24 MHz SPI. Pull-up/pull-down configurable via PIN13_PU_EN / PIN13_PD_EN. |+| 14 | AP_SDA/AP_SDIO/AP_SDI | bidirectional | AP I3C/I2C serial data (AP_SDA), AP SPI serial data I/O (AP_SDIO, 3-wire), or AP SPI serial data input (AP_SDI, 4-wire), selected by host interface mode. Pull-up/pull-down configurable via PIN14_PU_EN / PIN14_PD_EN. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | TDK InvenSense |+| Package | LGA-14(2.5x3) |+| Category | Sensor |+| Pins | 14 |++## Ordering variants++- `ICM-42631`++## CAD (KiCad official)++- Symbol: `ICM-42631`+- Footprint: `Package_LGA:Bosch_LGA-14_3x2.5mm_P0.5mm`+- 3D model: LGA-14(2.5x3) (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [TDK InvenSense datasheet](docs/icm-42631-datasheet.pdf) (134 pp, sha256 `3456fbe839202657`, retrieved 2026-08-17, tier: lcsc)+- **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](docs/icm-42631-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "icm-42631",+  "version": "0.1.0",+  "type": "component",+  "description": "TDK InvenSense Accelerometers, LGA-14(2.5x3). Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "sensor",+    "icm-42631"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "icm-42631.kicad_sym",+    "icm-42631.kicad_mod",+    "icm-42631.glb",+    "icm-42631.step",+    "icm-42631.lbr",+    "docs/hero.png",+    "docs/icm-42631-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file