ARM Processors (or Microcontrollers) are a family of powerful CPUs that we have selected an ARM7 TDMI based processor called LPC The NXP (founded by Philips) LPC is an ARM7TDMI-S based high- performance bit RISC Microcontroller MDK-ARM (Microcontroller Development Kit). ASK ARM Project KIT (LPC ). Board Features: ➢ Processor: LPC ➢ 2xSerial ports(One for ISP and other for Serial Communication). ➢ MHz.

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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 xrm 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.

It suits perfectly for beginners aarm 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.

Introduction to ARM (LPC21XX)

The LPC has kB flash memory. This memory may used for both code and data storage. The flash memory can be programmed by various ways. When the LPC on chip bootloader is used, kB of flash memory is available for user code. It may be accessed as 8-bit, bit and lpc21148. 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. 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 programming. Now, using these steps given here, try 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!!! Correction has been made. Please have a look once.

Introduction of LPC ARM microcontroller

If anything more then please let me know… I wish you good time. One more mistake is here.

Presentation is really good. Lcp2148 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. Yes, add me to your mailing list.


The number of GPIOs prkcessor available depends on the use of alternate functions. Blink LEDs connected on pins P0. Next Learn Microcontroller Programming.

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