Part: ICM-42688-P from InvenSense

Type: 6-axis MEMS MotionTracking Device

Key Specs:

• Gyroscope Noise: 2.8 mdps/Hz
• Accelerometer Noise: 70 μg/Hz
• Gyroscope Full-scale range: ± 15.6/31.2/62.5/125/250/500/1000/2000 dps
• Accelerometer Full-scale range: ± 2/4/8/16 g
• VDD Operating Range: 1.71V to 3.6V
• VDDIO Operating Range: 1.71V to 3.6V
• Low-Noise mode 6-axis current consumption: 0.88 mA
• FIFO Size: 2 kB
• Gyroscope Data Format (FIFO): 19-bits
• Accelerometer Data Format (FIFO): 18-bits

Features:

• Combines 3-axis gyroscope and 3-axis accelerometer
• Configurable host interface: I3CSM, I2C, SPI
• 2 programmable interrupts with ultralow-power wake-on-motion support
• Supports highly accurate external clock input
• Industry first 20-bits data format support in FIFO
• InvenSense on-chip APEX Motion Processing engine for gesture recognition, activity classification, and pedometer
• Programmable digital filters
• Embedded temperature sensor
• APEX Motion Functions: Pedometer, Tilt Detection, Tap Detection, Wake on Motion, Raise to Wake/Sleep, Significant Motion Detection
• Host interface speeds: 12.5 MHz I3CSM, 1 MHz I2C, 24 MHz SPI

Applications:

• AR/VR Controllers
• Head Mounted Displays
• Wearables
• Sports
• Robotics
• IoT Applications

Package:

• 2.5x3mm 14-Pin LGA

• Gyroscope Noise: 2.8 mdps/Hz & Accelerometer Noise: 70 μg/Hz
  • o Low-Noise mode 6-axis current consumption of 0.88 mA
• User selectable Gyro Full-scale range (dps): ± 15.6/31.2/62.5/125/250/500/1000/2000
• User selectable Accelerometer Full-scale range (g): ± 2/4/8/16
• User-programmable digital filters for gyro, accel, and temp sensor
• APEX Motion Functions:
  • o Pedometer, Tilt Detection, Tap Detection
  • o Wake on Motion, Raise to Wake/Sleep, Significant Motion Detection
• Host interface: 12.5 MHz I3CSM, 1 MHz I²C, 24 MHz SPI

• AR/VR Controllers
• Head Mounted Displays
• Wearables
• Sports
• Robotics
• IoT Applications

ICM-42688-P LGA-14 Pinout

Notes

• CLKIN: External clock input for RTC; supports 31–50 kHz clock for improved ODR accuracy and reduced temperature sensitivity.
• SCL/SCLK: Dual-function pin; acts as I²C clock (SCL) or SPI clock (SCLK) depending on interface mode.
• SDA/SDIO: Dual-function pin; acts as I²C data line (SDA) or SPI 3-wire data I/O (SDIO).
• SDO/SA0: In 4-wire SPI mode, functions as SPI data output (SDO). In I²C mode, selects slave address (SA0).
• CS: SPI chip select; active low. Not used in I²C or I3C modes.
• INT1 & INT2: Programmable interrupt outputs; can be configured for various motion events (wake-on-motion, tap detection, pedometer, etc.).
• VDDIO & VDD: Separate supply rails allow independent voltage levels (both 1.71–3.6 V range).
• AP_VDD: Dedicated supply for APEX motion co-processor.
• GND: Four ground pins (pins 2, 10, 12, 14) for robust grounding.

Typical Operating Circuit of section 4.2, VDD = 1.8 V, VDDIO = 1.8 V, TA=25°C, unless otherwise noted.

Table 3. D.C. Electrical Characteristics

Notes:

1. Guaranteed by design.

2. Derived from validation or characterization of parts, not tested in production.

Stress above those listed as "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these conditions is not implied. Exposure to the absolute maximum ratings conditions for extended periods may affect device reliability.

Table 9. Absolute Maximum Ratings

Document Number: DS-000347 Revision: 1.6