Atmel joins NXP, ST, Luminary Micro (now TI), and Toshiba as a microcontroller vendor to use the ARM Cortex-M3processor core. As a presumed replacement for some of their ARM 7 based MCU products, Atmel`s first Cortex-M3aims to differentiate from the rest by offering high speed USB functionality, firmware protection, differential input ADC, and 1. 6
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2V core voltage. When asked what differentiates Atmel from the other Cortex competitors, Product Marketing Manager Jacko Wilbrink offered this assesment: "The majority of other Cortex M3-based devices are targeted to low and mid-level data rate applications. We have built an ARM9-type infrastructure around our M3 core, with lots of DMA options, multilayer busses and segmented memories that can support high-end communication from high speed USB, SDIO, MMC and SPI. " Atmel used their experience designing high speed USB for their SAM9 product line and have been able to port the design to the lower power, lower speed Cortex-M3. (For some more technical details on how they were able to do it, read this article ) The SAM3U is currently the only Cortex-M3 design to offer high speed USB. Building on their experience with high speed interfaces in general, the SAM3U also contains SDIO/SD/MMC host and SPI interfaces on-chip. Borrowing from Atmel`s experience in smart card market, the SAM3U also features an on chip memory protection unit (MPU) and a 128-bit unique ID (for every device) that both can be used to protect the firmware both on-chip, and in an external memory device. As more resources get poured into firmware developement than hardware, protecting the algorithms that make the system work becomes more important. The added security might be just enough to dissuade a potential counterfeiter. The device also has a high...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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