What is Instruction TCM (ITCM) Memory in Arm Cortex-M series?

Instruction TCM (ITCM) is a small, fast memory region that is located within the Cortex-M processor itself. It allows frequently…

Scott Allen 7 Min Read

Cortex-M3 Instruction Prefetching and Branch Prediction (Explained)

The Cortex-M3 CPU implements an instruction prefetch unit and branch prediction unit to improve performance by reducing stalls due to…

Jamie Kellett 14 Min Read

ARM Cortex-M3 Architecture

The ARM Cortex-M3 is a 32-bit ARM processor core licensed by ARM Holdings. It is aimed at embedded applications requiring…

Elijah Erickson 6 Min Read

Unified vs Separate Memory Address Spaces in ARM Cortex-M

ARM Cortex-M processors can be configured with either a unified or separate memory address space for code and data. The…

David Moore 9 Min Read
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LDR instructions in Arm Cortex-M

The LDR (LoaD Register) instructions in ARM Cortex-M are used to load data from memory into a register. The Cortex-M…

Jeday Schwartz 7 Min Read

How Many Interrupts Are Available in the ARM Cortex-M3/M4?

The number of available interrupts in ARM Cortex-M3 and Cortex-M4 microcontrollers depends on the specific chip implementation. However, the Cortex-M3…

Mike Johnston 8 Min Read

EPSR Register

The EPSR (External Physical State Register) is a 32-bit register present in ARM Cortex processors that indicates the current physical…

Eileen David 8 Min Read

ARM Debug Interface v5 Architecture Specification

The ARM Debug Interface v5 Architecture Specification defines a standard debug interface between ARM processor cores and external debuggers. This…

Graham Kruk 8 Min Read

Does Apple use ARM chips?

Yes, Apple does use ARM-based chips in many of its products including iPhones, iPads, Apple Watches and more recently, Mac…

Jeday Schwartz 6 Min Read

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ARM Programming in C

ARM processors are very popular in embedded systems due to their power efficiency and performance…

What is DSP in ARM processor?

Digital Signal Processing (DSP) refers to processing digital signals using specialized programming and hardware optimizations…

Which microcontroller is better than ESP32?

The ESP32 is an extremely popular WiFi-enabled microcontroller produced by Espressif Systems. With its integrated…

Cortex-M3 Memory Region Shareability and Cache Policies (Explained)

The Cortex-M3 memory system allows configuring memory regions to be shareable or non-shareable between processors. It also allows configuring cache…

Scott Allen 9 Min Read

Exception Handling Differences in Cortex-M and Cortex-R Processors

The key difference in exception handling between Cortex-M and Cortex-R processors is that Cortex-M uses the Nested Vectored Interrupt Controller…

Mike Johnston 9 Min Read

Using GCC to Cross Compile for ARM Cortex M3

Cross compiling with GCC for the ARM Cortex M3 allows developers to build code on a host system like Linux…

Andrew Irwin 7 Min Read

Disabling All Interrupts on ARM Cortex-M0

The ARM Cortex-M0 is an extremely popular 32-bit embedded processor used in a wide range of microcontroller units (MCUs). As…

Holly Lindsey 10 Min Read

Context switches with Cortex-M0 is wrong what to do

Context switching on Cortex-M0 microcontrollers can be problematic due to the limited resources available on these low-cost ARM chips. While…

Andrew Irwin 7 Min Read

Off-chip Memory integration with Cortex-M0

The Cortex-M0 is the smallest and most energy-efficient processor in the Cortex-M series of ARM processors. As an ultra low…

Neil Salmon 15 Min Read

How to Find Valid vs Invalid Addresses for Your Cortex-M3 Microcontroller?

When working with a Cortex-M3 microcontroller, it is crucial to understand how to differentiate between valid and invalid addresses. This…

Eileen David 10 Min Read

Can ARM Cortex-M processors do division?

Yes, ARM Cortex-M processors are capable of performing division operations in hardware. While earlier Cortex-M0 and Cortex-M0+ processors lacked a…

David Moore 8 Min Read

Difference between arm7, arm9, arm11 and arm cortex

The ARM architecture refers to a family of reduced instruction set computing (RISC) processors that are widely used in embedded…

Holly Lindsey 12 Min Read

What is ARM cross-compiler?

An ARM cross-compiler is a compiler that runs on one architecture but produces executable code for a different architecture -…

Scott Allen 7 Min Read

Code vs Data Memory Partitioning in Microcontrollers

Microcontrollers have limited amounts of memory available, so it is important to understand how this memory is partitioned and used.…

Elijah Erickson 12 Min Read
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