ARM Cortex-M33

The ATM33 Series is built upon the ARM® Cortex®-M33F processor core (a variant of the ARM® Cortex®-M33) which is the first Armv8-M processor designed to address embedded and IoT markets that require highly efficient security and digital signal control. The implementation by Atmosic offers floating point and DSP functionality over that of the standard M33 processor core.

The Armv8-M introduces TrustZone which forms the foundation of security for embedded and IoT applications. The processor also has specific features to increase processing at the endpoint providing a 20% increase in performance over the Cortex-M4. Furthermore, it offers a Digital Signal Processing (DSP) extension, a Floating-point Unit (FPU), a coprocessor interface to offload compute-intensive operations, and Arm Custom Instructions (ACI) to speed up specific operations.


The ARM Cortex-M33F is a Cortex-M33 variant that provides a floating-point unit (FPU), to meet high precision calculation requirements in certain applications. For example, The CGM (Continuous Glucose Monitoring) medical wearable application.

The Cortex-M33F is an ideal blend of real-time determinism, efficiency, and security. It is for this reason Atmosic has selected the new Arm Cortex-M33F over alternative cores to power its IoT wireless solutions.

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