Author: Neil Salmon

EEPROM (Electrically Erasable Programmable Read-Only Memory) is a type of non-volatile memory used in computers and other electronic devices to store small amounts of data that must be saved when power is removed, like calibration tables or device configuration. Unlike EPROM chips that had to be removed and reprogrammed with specialized equipment, EEPROMs can be

Setting up external SPI memory with an ARM Cortex-M3 microcontroller provides additional non-volatile storage space for data and code. The key steps are configuring the SPI peripheral, connecting the memory chip, initializing the memory, and accessing it in software. With some configuration, external SPI memory can be used as executable program memory or for data

The ARM Cortex-M processors are designed to operate with little endian data by default. However, they can be configured to work with big endian data as well through changes to the register settings and data access methods. This allows flexibility in integrating Cortex-M cores into systems that need to work with mixed endianness data. Overview

The ARM Cortex-M3 is a 32-bit processor core licensed by Arm Holdings. It is part of the Cortex-M series of microcontrollers and is designed for embedded applications requiring high performance and low power consumption. The Cortex-M3 core has a 3-stage pipeline, uses the Thumb-2 instruction set, and includes features like a Memory Protection Unit, low

The main difference between pre-indexed and post-indexed addressing modes in Arm Cortex M is that in pre-indexed addressing, the offset is added to the base register value first and then the result is used as the address for the memory access operation. In post-indexed addressing, the value in the base register is used directly as

The ARM Cortex-M3 processor has a 32-bit address bus, which means it can address up to 2^32 (4 gigabytes) of memory. The 32-bit address space is a key architectural feature of the Cortex-M3 and provides flexibility for system designers to incorporate adequate amounts of memory for their applications. Overview of the ARM Cortex-M3 Processor The

When selecting an STM32F1 microcontroller based on the Cortex-M3 core for a project, one of the key considerations is the density option. STM32F1 MCUs are available in different flash memory and SRAM sizes depending on the density option. This determines how much code can be stored and executed directly from flash memory versus needing to

The ARM Cortex M3 processor has limited built-in support for floating point operations. While the Cortex M3 CPU core itself does not contain floating point hardware, the processor includes an optional coprocessor interface that allows a floating point coprocessor to be added. This provides Cortex M3 based microcontrollers with the ability to perform floating point

The ARM Cortex M3 processor implements atomic 32-bit writes, meaning writes of 32-bit values are guaranteed to complete without interruption. This ensures data integrity when writing to memory-mapped peripherals or shared memory locations. Introduction to Atomicity Atomicity refers to whether an operation can be interrupted midway through its execution. An atomic operation will either complete

The Cortex-M1 processor from ARM is an exciting new chip for embedded and IoT developers. The DesignStart program gives developers early access to the Cortex-M1 to start building and testing designs. If you’re just getting started with Cortex-M1 DesignStart, here are some tips to help you get up and running quickly. 1. Understand the Basics