M8


Written By: Ehsan Jahandarpour

The Apple M7 (codename Oscar) and M8 are motion co-processors used by Apple Inc. in their mobile devices. Their function is to collect sensor data from integrated accelerometers, gyroscopes and compasses and offload the collecting and processing of sensor data from the main central processing unit (CPU). The M7 was introduced in September 2013 with the iPhone 5S and the updated version, M8 was introduced in September 2014 with the iPhone 6 and also processes data from the barometer that is included in the iPhone 6 and iPad Air 2. Chipworks found that the M7 most likely is a NXP LPC1800 based microcontroller called LPC18A1. It uses an ARM Cortex-M3 core with a customised packaging and naming scheme indicating that it is for an Apple customized part. iFixit have identified the M8 in the iPhone 6 to be an NXP device with a very similar name, the LPC18B1.