BMI325

@@ -0,0 +1,53 @@+# BMI325++**Bosch Sensortec** · Accelerometers · LGA-14(2.5x3)++BMI325 from Bosch Sensortec, 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 | SDO | bidirectional | SPI 4-wire serial data output (SDO). In I²C mode, this pin selects I²C address bit-0 (tie to GND for the default I²C address). Should be left DNC in SPI 3-wire mode. |+| 2 | NC | unconnected | No connect. Leave floating (do not connect). |+| 3 | NC | unconnected | No connect. Leave floating (do not connect). |+| 4 | INT1 | bidirectional | Programmable interrupt pin 1. Used for motion-triggered interrupt output (data ready, tap, orientation, etc.); can be configured as push-pull/open-drain, active-high/low. |+| 5 | VDDIO | power_in | Digital I/O supply voltage. Operating range 1.08 V ... 3.63 V. Independent from analog VDD. A 100 nF decoupling capacitor is recommended. |+| 6 | GNDIO | power_in | Ground reference for the digital I/O supply (VDDIO) domain. |+| 7 | GND | power_in | Ground reference for the digital and analog (VDD) domains. |+| 8 | VDD | power_in | Main analog and digital supply voltage. Operating range 1.71 V ... 3.63 V. A 100 nF decoupling capacitor is recommended. |+| 9 | INT2 | bidirectional | Programmable interrupt pin 2. Second configurable motion/data-ready interrupt output. |+| 10 | NC | unconnected | No connect. Leave floating (do not connect). |+| 11 | NC | unconnected | No connect. Leave floating (do not connect). |+| 12 | CSB | input | Active-low chip select for SPI mode (4-wire or 3-wire). Must be tied to VDDIO to select I²C/I3C interface mode at startup. |+| 13 | SCx | input | Serial clock input. Functions as SCK (SPI serial clock, up to 10 MHz) in SPI modes and as SCL (I²C/I3C serial clock, up to 1 MHz I²C Fm+ / 12.5 MHz I3C) in I²C/I3C mode. |+| 14 | SDx | bidirectional | Serial data pin. SDI (SPI 4-wire input), SDIO (SPI 3-wire bidirectional data), or SDA (I²C/I3C bidirectional data). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Bosch Sensortec |+| Package | LGA-14(2.5x3) |+| Category | Sensor |+| Pins | 14 |++## Ordering variants++- `BMI3250 273 017 029`++## CAD (KiCad official)++- Symbol: `BMI325`+- 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:** [Bosch Sensortec datasheet](docs/bmi325-datasheet.pdf) (239 pp, sha256 `f06c5864abdb2b53`, 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/bmi325-datasheet.pdf)

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