Author: Scott Allen

The ARM Cortex-M0 is an ultra low power 32-bit RISC processor core designed for microcontroller applications. It implements the ARMv6-M architecture and includes built-in exception handling for faults and interrupts. The Cortex-M0 handles exceptions through the use of the Nested Vectored Interrupt Controller (NVIC) and the processor’s exception model. ARMv6-M Exception Model The ARMv6-M architecture

The ARM architecture defines a set of exceptions that can occur during program execution. These exceptions, also known as interrupts, allow the processor to handle events and transfer control to specific software routines to deal with these events. Some key things to know about exceptions in ARM architecture: Types of Exceptions There are several different

The Cortex-M is a family of ARM processor cores designed specifically for microcontroller applications. One of the key features of Cortex-M cores is their support for exceptions and interrupts. An exception is an unexpected event that disrupts the normal flow of instruction execution in a processor. When an exception occurs, the processor immediately stops what

Big endian and little endian are two different byte ordering methods used in computing. Specifically, big endian and little endian refer to the order in which bytes are stored in computer memory. The terms come from Jonathan Swift’s 1726 satirical novel Gulliver’s Travels, in which a war breaks out over whether soft boiled eggs should

Little endian is a memory architecture where the least significant byte of a word is stored at the smallest memory address and the most significant byte at the largest memory address. In little endian architecture, data is stored in memory from the least significant byte to the most significant byte. Byte Ordering in Memory In

The ARM Cortex-M33 is a little endian processor. This means that in memory, it stores the least significant byte of a multi-byte value in the lowest byte address and the most significant byte in the highest byte address. So for a 32-bit integer like 0x12345678, it would be stored in memory as 0x78563412. Understanding Endianness

Endianness refers to the byte ordering and memory layout convention used by a processor architecture to store data in memory. It determines how sequence of bytes are interpreted as larger data types like words, double words etc. The ARM processor supports both big-endian and little-endian memory layouts. By default, ARM uses little-endian format. Big Endian

ARM Cortex processors can operate in either little endian or big endian mode. The endianness is configurable in software, so ARM Cortex supports both endian formats. This gives developers flexibility in choosing the appropriate endianness for their application. What is Endianness? Endianness refers to the order in which bytes are arranged in computer memory for

The Arm Cortex-M4 is a 32-bit processor core designed for embedded and IoT applications requiring low power consumption and high performance. It offers speeds up to 150 MHz and is capable of reaching 1.25 DMIPS/MHz. This translates to real-world clock speeds of 80-150 MHz and performance in the range of 100-187 DMIPS. Key Speed and

The key differences between the ARM Cortex-M3 and Cortex-M4 microcontrollers are in their core designs, with the M4 having additional features for digital signal processing (DSP) and floating point arithmetic. The Cortex-M4 also supports more interrupts and has a higher clock speed. Overview of ARM Cortex-M3 The ARM Cortex-M3 is a 32-bit RISC processor core