The At91r40008 Datasheet is the key to understanding and utilizing the Atmel (now Microchip Technology) AT91R40008 microcontroller. This comprehensive document provides detailed specifications, pin configurations, memory maps, and functional descriptions necessary for engineers and hobbyists to design and implement embedded systems based on this powerful ARM7TDMI processor.
Decoding the At91r40008 Datasheet Essential Information
The At91r40008 Datasheet is much more than just a list of numbers; it’s a complete reference manual that guides developers through every aspect of the microcontroller. It details crucial electrical characteristics such as voltage ranges, current consumption, and timing specifications. This information is vital for ensuring the stability and reliability of any application. Understanding these parameters is fundamental to preventing hardware failures and optimizing power consumption. For example, the datasheet clearly defines the operating temperature range, which is a crucial design consideration for industrial applications. Without careful attention to these details, you risk creating a system that is unreliable or even completely non-functional.
A significant portion of the datasheet is devoted to describing the microcontroller’s peripherals. This includes details about:
- Timers/Counters
- UARTs (Universal Asynchronous Receiver/Transmitters)
- SPI (Serial Peripheral Interface)
- ADC (Analog-to-Digital Converter)
- PWM (Pulse-Width Modulation) controllers
These peripherals are the building blocks of most embedded systems, enabling the microcontroller to interact with the external world. The datasheet provides detailed register maps and programming information for each peripheral, allowing developers to configure and control them effectively. The presence of such detailed information significantly reduces development time and minimizes potential errors.
The At91r40008 datasheet also covers essential aspects like memory organization, interrupt handling, and debugging features. The memory map clearly outlines the address ranges for different memory regions, including flash memory, SRAM, and peripheral registers. The interrupt controller section explains how to configure and prioritize interrupts from various sources, enabling the microcontroller to respond quickly and efficiently to external events. The debugging section details available debugging interfaces and techniques, which are invaluable for identifying and resolving software bugs.
Here’s a simple representation of a part of a memory address map (this is just an example and not necessarily accurate to the actual device):
| Address Range | Memory Type |
|---|---|
| 0x00000000 - 0x000FFFFF | Flash Memory |
| 0x00100000 - 0x0010FFFF | SRAM |
In short, the datasheet is the single source of truth for all information related to the At91r40008.
For a deeper understanding of the At91r40008 microcontroller and to start your project, consult the official At91r40008 Datasheet. This document contains all the technical details you need to effectively utilize this powerful ARM7TDMI processor.