component
STK8321
Public Unreviewedby Ray
SENSORTEK Attitude Sensor/Gyroscope, LGA-12(2x2). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads on click. Unloads when scrolled away or the tab is hidden.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
PCB Footprint
Open full view ↗Loads on click. Unloads when scrolled away or the tab is hidden.
Datasheet
Open in new tab ↗Loads on click. Unloads when scrolled away or the tab is hidden.
README
markdownSTK8321
SENSORTEK · Attitude Sensor/Gyroscope · LGA-12(2x2)
STK8321 from SENSORTEK, in a LGA-12(2x2). 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 | SA0/SDO | bidirectional | In I2C mode, selects the 7-bit slave address (SA0=1 → 0x1F, SA0=0 → 0x0F). In 4-wire SPI mode, serves as the Serial Data Output (SDO); not connected in 3-wire SPI mode (recommended to pull SDO up to VDDIO or down to GND via 10 kΩ). |
| 2 | SDA/SDI/SDIO | bidirectional | Serial data. Open-drain SDA in I2C mode, SDI (data input) in 4-wire SPI, bidirectional SDIO in 3-wire SPI. Requires external pull-up to VDDIO when used as I2C SDA. |
| 3 | VDDIO | power_in | Digital interface supply voltage. Operating range 1.62 V to 3.6 V (typ 2.6 V). Decouple with 0.1 µF to GNDIO. |
| 4 | RES | input | Reserved. Recommended to tie to GND. |
| 5 | INT1 | output | Programmable interrupt output 1. Can be configured push-pull or open-drain, active-high or active-low (via INTCFG1 0x20). Any interrupt source (new data, any-motion/slope, significant motion, FIFO watermark/full) can be routed here through INTMAP2 (0x1A). |
| 6 | INT2 | output | Programmable interrupt output 2. Same configurability as INT1 (push-pull/open-drain, active polarity); independent interrupt-source routing via INTMAP2. |
| 7 | VS | power_in | Analog/core supply voltage. Operating range 1.7 V to 3.6 V (typ 2.6 V). Decouple with 10 µF (Cs) to GND close to the device. |
| 8 | GNDIO | power_in | Digital interface ground. Must be connected to ground; return path for VDDIO. |
| 9 | GND | power_in | Analog/core ground. Must be connected to ground; return path for VS. |
| 10 | /CS | input | Interface-select and SPI chip-select. Tie high (to VDDIO) to enable I2C mode; drive low to enable SPI mode and select the device for a SPI transaction. |
| 11 | NC | unconnected | Not internally connected. Leave floating or tie to ground. |
| 12 | SCL/SCK | input | Serial clock. Open-drain SCL in I2C mode (external pull-up to VDDIO required, up to 400 kHz Fast Mode). SCK in SPI mode (up to 8 MHz, CPOL/CPHA 00 or 11 auto-detected on /CS falling edge). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SENSORTEK |
| Package | LGA-12(2x2) |
| Category | Sensor |
| Pins | 12 |
CAD (KiCad official)
- Symbol:
STK8321 - Footprint:
Package_LGA:LGA-12_2x2mm_P0.5mm - 3D model: LGA-12(2x2) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SENSORTEK datasheet (38 pp, sha256
34fa58754c0eb800, 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).