Author: Scott Allen

The Cortex-M33 and Cortex-M23 are 32-bit processor cores designed by ARM for microcontroller applications. Both utilize the ARMv8-M architecture and include features for security, digital signal processing, and floating point math. However, there are some key differences between the two cores: Main Differences The Cortex-M33 includes the ARMv8-M Security Extension, TrustZone technology, and support for

The Cortex-M55 and Cortex-M7 are both 32-bit microcontroller cores designed by ARM for embedded and IoT applications. The main differences between the two cores come down to performance, features, and intended use cases. In brief, the Cortex-M7 is the higher performance and more capable core, while the Cortex-M55 is optimized for power efficiency. The M7

Context switching refers to the process of storing and restoring the state or context of a processor when switching between executing multiple tasks or processes. In Arm Cortex processors, context switching enables multitasking by allowing the processor to pause execution of one task, save its context, and resume another task from where it left off.

Switching between different execution contexts is an important concept on Cortex-M processors. When an interrupt occurs, the processor automatically switches from thread mode to handler mode to execute the interrupt service routine (ISR). The ISR needs to run quickly and return control back to the original context. However, there may be cases where the ISR

The ARM Cortex series of processors utilize a number of special purpose registers that allow for customized control and monitoring of the processor’s operation. These registers give developers and engineers visibility into the internal workings of the processor and enable optimization of performance, power usage, and functionality. Program Counter The program counter (PC) register contains

The control register inside the Cortex-M processor core serves a critical role in configuring and controlling the operation of the processor. This register allows software to enable/disable certain processor features, control power modes, set stack pointers, handle exceptions, and more. Having fine-grained control over the processor’s operation is essential for building high-performance yet energy-efficient embedded

The ARM Cortex-M processors are a series of 32-bit microcontroller units designed by ARM Holdings. As RISC architectures, Cortex-M CPUs have a simplified set of instructions that operate on a wide set of general purpose registers. The number of general purpose registers in Cortex-M processors can vary depending on the specific model, but tends to

Cache memory in ARM processors refers to small, fast memory units integrated into the processor that store frequently accessed data and instructions to improve performance. The cache sits between the CPU and main memory and serves as a temporary staging area, keeping data that the CPU will likely need again in the near future. This