Part Review and Datasheet Update

Thought

flux

Set GND_1's Pin Type to "Ground"
Set GND_1's Pin Description to "Ground"
Set GND_1's Section to "Ground"
Set GND_1's Pin Group to "Ground"
Set GND_1's Pin Orientation to "Bottom"
Set CSB's Pin Type to "Input"
Set CSB's Pin Description to "Chip select"
Set CSB's Section to "Communication"
Set CSB's Pin Group to "SPI/I2C"
Set CSB's Pin Orientation to "Left"
Set SDI's Pin Type to "Bi-Directional"
Set SDI's Pin Description to "Serial data input"
Set SDI's Section to "Communication"
Set SDI's Pin Group to "SPI/I2C"
Set SDI's Pin Orientation to "Left"
Set SCK's Pin Type to "Input"
Set SCK's Pin Description to "Serial clock input"
Set SCK's Section to "Communication"
Set SCK's Pin Group to "SPI/I2C"
Set SCK's Pin Orientation to "Left"
Set SDO's Pin Type to "Bi-Directional"
Set SDO's Pin Description to "Serial data output"
Set SDO's Section to "Communication"
Set SDO's Pin Group to "SPI/I2C"
Set SDO's Pin Orientation to "Left"
Set VDDIO's Pin Type to "Power In"
Set VDDIO's Pin Description to "Interface supply"
Set VDDIO's Section to "Power"
Set VDDIO's Pin Group to "Power"
Set VDDIO's Pin Orientation to "Top"
Set GND_2's Pin Type to "Ground"
Set GND_2's Pin Description to "Ground"
Set GND_2's Section to "Ground"
Set GND_2's Pin Group to "Ground"
Set GND_2's Pin Orientation to "Bottom"
Set VDD's Pin Type to "Power In"
Set VDD's Pin Description to "Analog supply"
Set VDD's Section to "Power"
Set VDD's Pin Group to "Power"
Set VDD's Pin Orientation to "Top"

Thought

flux

Set GND_1's Section to "Power"
Set GND_2's Section to "Power"
Set CSB's Pin Group to "SPI"
Set SDI's Pin Group to "I2C"
Set SCK's Pin Group to "I2C"
Set SDO's Pin Group to "SPI"

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BME690 Part Review

Scope

Reviewed available part information for the current part project: MPN, manufacturer, description, project properties, schematic symbol terminals, footprint assets, pad mapping, and datasheet-derived pin/spec information.

Datasheet source

Existing project Datasheet URL: https://www.bosch-sensortec.com/products/environmental-sensors/gas-sensors/bme690/#documents
Official datasheet PDF identified from Bosch page: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme690-ds001.pdf
Datasheet document: BST-BME690-DS001-04, Bosch Sensortec, 2025.

Because a Datasheet URL was already set, I did not change the project property. Consider updating it to the direct PDF above for easier machine extraction.

Available project information

Project properties

Table

Field	Current value	Review
Manufacturer Part Number	BME690	OK
Manufacturer Name	BOSCH	OK, but datasheet/source branding is Bosch Sensortec GmbH
Part Type	Sensors	OK
Designator Prefix	IC	OK
Datasheet URL	Bosch product documents page	Usable, but direct PDF URL is preferable
Package / Case Code	Not set	Missing; should be set to `LGA-8, 3.0 x 3.0 x 0.93 mm metal lid`
Operating Voltage	Not set	Missing; recommended max operating supply is VDD 3.6 V, VDDIO 3.6 V
Operating Temperature	Not set	Missing; full-accuracy operation range is -40°C to +85°C

Assets

Table

Asset	Status
`BME690 Symbol.svg`	Present; set as thumbnail/default symbol
`BME690.kicad_mod`	Present; set as footprint
`BME690.stp`	Present; set as 3D model

Datasheet-derived key specs

Table

Spec	Datasheet value
Function	4-in-1 air quality/environment sensor for gas, pressure, humidity, and temperature
Package	3.0 mm x 3.0 mm x 0.93 mm metal lid LGA
Pin count	8 pins
Supply voltage VDDIO	1.2 V to 3.6 V
Supply voltage VDD	1.71 V to 3.6 V
Interfaces	I²C up to 3.4 MHz; SPI 3-wire/4-wire up to 10 MHz
Full-accuracy operating range	Pressure: 300–1100 hPa; Humidity: 0–100%; Temperature: -40°C to +85°C
Typical average current	2.2 µA at 1 Hz h/T; 3.1 µA at 1 Hz p/T; 4.2 µA at 1 Hz h/p/T; 50 µA ULP p/h/T/air quality; 0.5 mA LP p/h/T/air quality; 3.1 mA standard gas scan
Humidity accuracy	±3% RH; hysteresis ±1% RH; response time 1 s
Pressure accuracy	Relative ±0.05 hPa; absolute ±0.5 hPa; TCO ±1.3 Pa/K
Temperature accuracy	±0.5°C from 0°C to 65°C
Gas outputs	IAQ, bVOC equivalent, CO₂ equivalent

Datasheet pin table vs schematic symbol

Table

Pin	Datasheet name	Datasheet function	Project terminal	Pin number OK?	Name OK?	Current Pin Type	Recommended Pin Type	Notes
1	GND	Ground	GND_1	Yes	Acceptable; duplicate ground naming	Unspecified	Ground	Should add Pin Description: `Ground`
2	CSB	Chip select	CSB	Yes	Yes	Unspecified	Input	I²C mode requires CSB tied to VDDIO
3	SDI	Serial data input / SDA / 3-wire SDI-SDO	SDI	Yes	Yes	Unspecified	Bi-Directional	Because it is In/Out and maps to I²C SDA
4	SCK	Serial clock input / SCL	SCK	Yes	Yes	Unspecified	Input	Pin Description: `Serial clock input`
5	SDO	Serial data output / address select	SDO	Yes	Yes	Unspecified	Bi-Directional	SPI output; I²C default address select. Could be `Output` if symbol is SPI-focused, but datasheet lists In/Out
6	VDDIO	Digital/interface supply	VDDIO	Yes	Yes	Unspecified	Power In	Pin Description: `Interface supply`
7	GND	Ground	GND_2	Yes	Acceptable; duplicate ground naming	Unspecified	Ground	Should add Pin Description: `Ground`
8	VDD	Analog supply	VDD	Yes	Yes	Unspecified	Power In	Pin Description: `Analog supply`

Symbol findings

Pin count matches datasheet: 8 schematic terminal elements and 8 datasheet pins.
Pin numbers match the datasheet exactly.
Pin names match, except the two GND pins are represented as GND_1 and GND_2 to avoid duplicate designators. This is acceptable, but their displayed pin descriptions should still be Ground.
Main mismatch: all terminals currently have Pin Type: Unspecified. These should be updated for ERC quality.
Missing useful terminal metadata: Pin Description, Section, Pin Group, and Pin Orientation are not set.

Recommended terminal metadata

Table

Terminal	Pin Type	Pin Description	Section	Pin Group	Pin Orientation
GND_1	Ground	Ground	Ground	Ground	Bottom
CSB	Input	Chip select	Communication	SPI/I2C	Left
SDI	Bi-Directional	Serial data input	Communication	SPI/I2C	Left
SCK	Input	Serial clock input	Communication	SPI/I2C	Left
SDO	Bi-Directional	Serial data output	Communication	SPI/I2C	Left
VDDIO	Power In	Interface supply	Power	Power	Top
GND_2	Ground	Ground	Ground	Ground	Bottom
VDD	Power In	Analog supply	Power	Power	Top

Footprint review

Current footprint data

The footprint asset is BME690.kicad_mod. It defines:

Footprint description: 3.0mm x 3.0mm x 0.95mm
SMD rectangular pads, 8 total
Pad size: 0.400 mm x 0.400 mm
Pad coordinates:
- Pin 1: x=+1.2, y=-1.2
- Pin 2: x=+1.2, y=-0.4
- Pin 3: x=+1.2, y=+0.4
- Pin 4: x=+1.2, y=+1.2
- Pin 5: x=-1.2, y=+1.2
- Pin 6: x=-1.2, y=+0.4
- Pin 7: x=-1.2, y=-0.4
- Pin 8: x=-1.2, y=-1.2

Footprint vs datasheet

Pin count: matches, 8 pads.
Pad names/designators: match terminal names/pin numbers by mapping.
Body outline: 3.0 mm x 3.0 mm matches datasheet nominal package size.
Height: footprint description says 0.95 mm; datasheet says 0.93 mm. This is a minor descriptive mismatch only; the 3D model may be more relevant mechanically.
Pad size: 0.40 mm x 0.40 mm matches visible landing-pattern values extracted from the datasheet.
Pad placement: ±1.2 mm and ±0.4 mm grid is consistent with a 3.0 mm package and 1.5 mm half-body reference from the extracted landing-pattern diagram.
Pin numbering orientation: datasheet explicitly notes untypical clockwise numbering in top view. The current KiCad footprint uses pin 1 at +x/-y and then progresses upward on the right side before continuing on the left. This appears consistent with the extracted top-view ordering shown as 1,2,4,3 on one side and 8,7,5,6 on the other side only in OCR-fragment form, but I recommend a visual check against the PDF package drawing because OCR did not preserve the diagram geometry perfectly.

Mismatches / issues to fix

All terminal Pin Types are Unspecified
This is the most important mismatch. It reduces ERC usefulness and should be corrected to Power In / Ground / Input / Bi-Directional based on the datasheet.
Missing Pin Descriptions
The datasheet provides concise functions for every pin. Add these to each terminal.
Missing Package or Case Code property
Recommended value: LGA-8, 3.0 x 3.0 x 0.93 mm metal lid.
Missing Operating Voltage / Operating Temperature properties
Recommended: Operating Voltage = 3.6 V as the max recommended supply; Operating Temperature = -40°C to +85°C.
Datasheet URL is a product-page URL, not the direct PDF
It is valid, but the direct official PDF URL is better for automated extraction: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme690-ds001.pdf.
Footprint descriptive height mismatch
Footprint description says 0.95 mm while datasheet says 0.93 mm. This is minor unless mechanical clearance is tight.
Footprint pin-1 orientation should be visually verified
The pad count, pad size, and general geometry look correct, but the BME690 uses untypical clockwise pin numbering in top view, so a visual confirmation against Picture 14 / Picture 17 in the official PDF is recommended before publishing.

Recommended next actions

Update terminal properties: Pin Type, Pin Description, Section, Pin Group, and Pin Orientation.
Add missing project properties: Package or Case Code, Operating Voltage, Operating Temperature, and optionally Implementation Details.
Optionally update the Datasheet URL property to the direct official PDF URL.
Perform a visual footprint orientation check against Bosch datasheet Picture 14 and Picture 17 before publishing this part.

Scope
Datasheet source
Available project information
Project properties
Assets
Datasheet-derived key specs
Datasheet pin table vs schematic symbol
Symbol findings
Recommended terminal metadata
Footprint review
Current footprint data
Footprint vs datasheet
Mismatches / issues to fix
Recommended next actions

Reviews

Documents

BME690 Part Review

Assets

BME690

BME690 Symbol.svgDefault

kicad_mod

BME690

BME690.kicad_modFootprint

BME690-thumb.png

BME690-thumbThumbnail

stp

BME690

BME690.stp3D Model

Project Name

BME690

Description

Gas, Humidity, Pressure, Temperature Sensor Digital Output The BME690 is a compact 4-in-1 environmental sensor from Bosch Sensortec designed for advanced indoor air-quality monitoring. It integrates gas, humidity, temperature, and barometric pressure sensing into a single low-power MEMS device. The sensor is optimized for battery-powered and high-condensation environments, making it suitable for smart home, industrial, wearable, and IoT applications.

Key Features 4-in-1 environmental sensing: Gas sensing Relative humidity Temperature Barometric pressure Detects: Volatile Organic Compounds (VOCs) Volatile Sulfur Compounds (VSCs) Other air-quality-related gases Supports indoor air quality (IAQ) monitoring Provides: IAQ index bVOC equivalent CO₂ equivalent outputs Improved robustness for high-condensation environments Ultra-small package: 3.0 × 3.0 × 0.93 mm 8-pin metal LGA package Low power consumption suitable for battery-powered devices Interfaces: I²C up to 3.4 MHz SPI up to 10 MHz Wide operating range: Temperature: −40°C to +85°C Humidity: 0–100% RH Pressure: 300–1100 hPa Supply voltage: VDDIO: 1.2 V to 3.6 V VDD: 1.71 V to 3.6 V Humidity accuracy: ±3% RH Temperature accuracy: ±0.5°C Pressure accuracy: ±0.5 hPa absolute Supports AI-based gas classification using Bosch BME AI-Studio Pin-compatible evolution of the BME688 platform Designed for: Smart home devices HVAC systems Air-quality mapping Food freshness monitoring Wearables Industrial sensing applications

#CommonPartsLibrary #Sensor

Properties

Manufac… Number

BME690

Manufac…er Name

BOSCH

Part Type

Sensors

Datasheet URL

mm.digikey.com/Volume0/opasdata/d220001/medias/docus/6476/Bosch%20SensortecBME690_Product%20Flyer1.pdf

Designator Prefix

License

creativecommons.org/licenses/by/4.0/

Symbol Style

parametric-v1

Pricing & Availability

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adrian95 / BME690

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