This tutorial is about introduction to ARM7 LPC Microcontroller. This guide will help you to understand details of GPIO in LPC Microcontroller. PWM in ARM LPC Pulse Width Modulation (PWM) is a technique used to vary the width of the pulse while keeping its frequency constant. It can also be. There are various development environments available in the market for ARM processors. Some of these are mentioned below: CrossWorks.

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This enables the companies to develop their own processors compliant with the ARM instruction set architecture. Similarly, all major semiconductor manufacturers like Atmel, Samsung, TI etc. ARM7 is most successful and widely used processor family in embedded system applications. ARM7 is excellent to get start with in terms of resources available on internet and quality documentation provided by NXP.

How to Start Programming for ARM7 Based LPC2148 Microcontroller

It suits perfectly for beginners to get in-depth idea about hardware and software implementation. I request you to hold user manual while reading these tutorials.

This memory is more than enough for almost all applications. The LPC has kB flash memory.

This memory may used for both lpc21488 and data storage. The flash memory can be programmed by various ways. When the LPC on chip bootloader is used, kB of flash memory lpc2184 available for user code.


It may be accessed as 8-bit, bit and bits. Understanding what is IO Ports and how to use them is very important. IC with some pins.

Ports are named as P0 and P1. Pins of each port labeled as Px. Each pin can perform multiple functions.

Pins 0 through 15 of port 1 are not available. The Current State of the GPIO configured port pins can always be read from this register, regardless of pin direction.

ARM7 Inside | ARM7-LPC

This register controls the state of output pins. Writing ones produces lows at the corresponding port pins and clears the corresponding bits in the IOSET register. Writing zeroes has no effect.

Writing ones produces highs at the corresponding port pins. Port 0 has 32 pins P0. Each pin can have multiple functions. It will not affect other pins. Once the use of above all registers is perfectly understood, you are good to go with amr7.

Now, using these steps given here, lpd2148 to write basic program on your own and once it is done, compare with the basic program given here.

You can write this program using various techniques. We have given the most basic option for you. Feel free to leave comment….!!!!


Your tutorial presentation is very nice. Please correct the mistake in the following sentence you have given. Hi Sumathi Thank You for pointing out typo, I appreciate your time!!!

Introduction to ARM7 LPC Microcontroller

Correction has been made. Please have a look once. If anything more then please let me know… I wish you good time. One more mistake is here.

Presentation is really good. Apart from this procedure to interface external Flash remains same among all other MCUs. I will let you know if in case i write an article which will help you somehow to make your things done.

Home as well as Industrial Automation 2.

Introduction to ARM7 Based Microcontroller (LPC2148)

Yes, add me to your mailing list. The number of GPIOs actually available depends on the use of alternate functions. Blink LEDs connected on pins P0. Next Learn Microcontroller Programming. Login Username Password Remember Me. Register Username Email Yes, add me to your mailing list. Register Lost your password?