AT91SAM7S256D-AU

Product Overview

Category

AT91SAM7S256D-AU belongs to the category of microcontrollers.

Use

This microcontroller is widely used in various electronic devices and systems for controlling and processing data.

Characteristics

• High-performance 32-bit ARM7TDMI-S RISC architecture
• Clock frequency up to 55 MHz
• 256KB Flash memory and 64KB SRAM
• Multiple communication interfaces (UART, SPI, I2C)
• Analog-to-digital converter (ADC)
• Real-time clock (RTC)
• Low power consumption
• Small form factor

Package

AT91SAM7S256D-AU is available in a compact LQFP package.

Essence

The essence of this microcontroller lies in its powerful processing capabilities and versatile features, making it suitable for a wide range of applications.

Packaging/Quantity

AT91SAM7S256D-AU is typically packaged in reels or trays, with a quantity of 250 units per reel/tray.

Specifications

• Architecture: ARM7TDMI-S
• Clock Frequency: Up to 55 MHz
• Flash Memory: 256KB
• SRAM: 64KB
• Communication Interfaces: UART, SPI, I2C
• ADC Resolution: 10-bit
• Operating Voltage: 3.3V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The AT91SAM7S256D-AU microcontroller has a total of 100 pins, which are assigned to various functions such as GPIO, communication interfaces, timers, and power supply. The detailed pin configuration can be found in the product datasheet.

Functional Features

1. High Performance: The ARM7TDMI-S core provides efficient processing capabilities, enabling fast execution of instructions and efficient data handling.
2. Versatile Communication Interfaces: The microcontroller supports UART, SPI, and I2C interfaces, allowing seamless integration with other devices and systems.
3. Ample Memory: With 256KB of Flash memory and 64KB of SRAM, the microcontroller can store program code and data efficiently.
4. Analog-to-Digital Conversion: The built-in ADC enables accurate conversion of analog signals into digital values, facilitating sensor interfacing and data acquisition.
5. Real-Time Clock: The integrated RTC provides accurate timekeeping functionality, essential for applications requiring precise timing.
6. Low Power Consumption: The microcontroller is designed to operate with minimal power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages

• Powerful processing capabilities
• Versatile communication interfaces
• Ample memory for program and data storage
• Accurate analog-to-digital conversion
• Real-time clock for precise timing
• Low power consumption for energy efficiency

Disadvantages

• Limited availability of alternative models
• Relatively higher cost compared to some other microcontrollers in the market

Working Principles

AT91SAM7S256D-AU operates based on the ARM7TDMI-S architecture, which executes instructions fetched from the Flash memory. The microcontroller interacts with external devices through its communication interfaces, enabling data exchange. It utilizes the internal memory for storing program code and data. The analog-to-digital converter converts analog signals into digital values, which can be processed by the microcontroller. The real-time clock ensures accurate timing for time-sensitive applications.

Detailed Application Field Plans

AT91SAM7S256D-AU finds applications in various fields, including but not limited to: - Industrial automation - Consumer electronics - Automotive systems - Medical devices - Internet of Things (IoT) devices - Robotics

Detailed and Complete Alternative Models

While AT91SAM7S256D-AU is a highly capable microcontroller, there are alternative models available in the market that offer similar functionalities. Some notable alternatives include: - STM32F103C8T6 - PIC18F4550 - MSP430G2553 - LPC1768

These alternative models provide comparable features and performance, allowing developers to choose the most suitable microcontroller for their specific application requirements.

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