Product Parameters​​

Supply Voltage: VDD: 1.71V-3.6V (Core Power), VDDIO: 1.2V-3.6V (Logic Level)

Communication: I²C (up to 3.4 MHz) / SPI (up to 10 MHz)

Measurement Ranges:

: ppb-level VOC/VSC/CO/H₂ Detection

Temperature: -40°C to +85°C (±0.5°C Accuracy @ 0-65°C)

Humidity: 0-100% RH (±3% Accuracy @ 25°C)

Pressure: 300-1100 hPa (±0.6 hPa Accuracy)

Power Consumption:

1.1µA @ 1Hz Temp/Humidity Mode

90µA Ultra-Low Power (ULP) Mode

3.9mA Standard Scan Mode

Package: 3.0 × 3.0 × 0.93 mm LGA-8 (Lead-Free, RoHS Compliant)

ESD Protection: ≥8 kV Contact Discharge

​​Pin Functions​​

VDD: Core Power Input (1.71V-3.6V), Connect to DC Positive

VDDIO: I/O Level Shifter Power (1.2V-3.6V)

GND: Power Ground

SCL: I²C Clock Line

SDA: I²C Data Line

CS: SPI Chip Select (Active Low)

SDI/SDO: SPI Data Input/Output

SCK: SPI Clock Line

​​FAQ​​

1.
​​Connection Recognition Failure​​

Ensure I²C/SPI mode jumpers are correctly set (default I²C). For SPI, solder CS pin and configure logic level (VDDIO must match host MCU voltage, e.g., 3.3V).

2.
​​Abnormal Readings (e.g., VOC Drift)​​

Enable heating layer via set Heater(320°C, 100ms)to stabilize measurements. Calibrate using BME AI-Studio for specific patterns.

3.
​​Higher Power Consumption Than Specified​​

Activate ULP mode via iaqUpdate()function. Disable unused sensors (e.g., pressure) and reduce I²C/SPI clock frequency to ≤1MHz.