component
BMI325
Public Made by Adomby adom
Bosch Sensortec Accelerometers, LGA-14(2.5x3). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownBMI325
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
Same part, different packaging or reel option.
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)
- 3D model files:
bmi325-etched.step/bmi325-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bmi325.step/bmi325.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Bosch Sensortec datasheet (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).