Evidence-scoped component comparison
ICM-42688-P vs QMI8658 – IMU Migration Checklist
ICM-42688-P and QMI8658 candidates need a sensor migration review covering noise and ranges, interface timing, package/pinout, register map, FIFO, interrupts, drivers and calibration.
Treat QMI8658 as a redesign candidate until exact version, board and software validation are complete.
The final decision depends on your exact suffix, schematic, PCB footprint, firmware, operating conditions and compliance requirements. “Match” below means only the cited topic matched in the reviewed evidence.
Electrical comparison
Compare like-for-like modes and bandwidth/test conditions; headline range alone is insufficient.
Package and mechanical
Check orientation, dimensions, pitch, assembly guidance and reflow constraints.
Pinout comparison
Map supplies, grounds, address/chip-select, clock and interrupt pins explicitly.
Firmware comparison
Rewrite or port initialization, scaling, timestamp/FIFO parsing, interrupt handling and calibration.
Compliance comparison
Verify temperature grade, packing, lifecycle and material documents independently.
Questions engineers and buyers ask
Comparison FAQ
Answers preserve the exact-code and evidence boundary instead of turning a candidate into a compatibility promise.
Can QMI8658 exact version directly replace ICM-42688-P?
No automatic replacement is claimed. Treat QMI8658 as a redesign candidate until exact version, board and software validation are complete. The exact suffix, circuit and operating conditions control the decision.
Which evidence is needed to compare ICM-42688-P and QMI8658 exact version?
Use current manufacturer documents for both exact order codes and cover electrical limits, package drawing, pin functions, firmware behavior and compliance scope. This page cites TDK InvenSense ICM-42688-P product page and QST QMI8658A Datasheet Rev A.
Does this comparison confirm current stock, price or date code?
No. Technical comparison evidence does not prove commercial availability. Quantity, price, date code, packing, lead time and traceability are confirmed in a specific quotation.
Source boundary
Evidence supports the comparison—not current availability.
Do not claim package, pin, register or driver compatibility from similar six-axis functionality; choose the exact QMI8658 version before comparison. Pricing, stock, date code and traceability remain quotation-specific.
3 current manufacturer documents passed the database evidence gate.