AT91SAM7S256-MU - Microchip Technology

Manufacturer Part Number

AT91SAM7S256-MU

Manufacturer

Microchip Technology

Introduction

The AT91SAM7S256-MU is a high-performance, embedded microcontroller based on the ARM7TDMI processor, optimized for low-power and high-speed computing needs, specifically designed for a wide range of embedded applications.

Product Features and Performance

Core Processor: ARM7® with 16/32-Bit flexibility

Speed: 55MHz, enabling quick processing and response times

Connectivity: I2C, SPI, SSC, UART/USART, USB for versatile interfacing options

Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT for enhanced functionality

Number of I/O: 32, providing ample connectivity

Program Memory Size: 256KB FLASH, catering to complex programs

RAM Size: 64K x 8, sufficient for intermediate data processing

Voltage Supply (Vcc/Vdd): 1.65V ~ 1.95V, ensuring low power consumption

Data Converters: A/D 8x10b, for interfacing with analog sensors

Oscillator Type: Internal, simplifies circuit design

Operating Temperature: -40°C ~ 85°C, suitable for harsh environments

Mounting Type: Surface Mount, ideal for compact PCB designs

Package / Case: 64-VFQFN Exposed Pad, for efficient heat dissipation

Product Advantages

Integrated USB 2.0 Full Speed Device Port for direct PC communications

Low power consumption enhances battery life in portable applications

Comprehensive set of peripherals allows for high-level system integration

Internal oscillator reduces the need for external components

Key Technical Parameters

Core Size: 16/32-Bit

Speed: 55MHz

Program Memory: 256KB FLASH

RAM: 64KB

Supply Voltage: 1.65V ~ 1.95V

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Brown-out Detect/Reset and POR for reliable operation under variable power conditions

Watchdog Timer (WDT) to ensure system recovery from fault states

Compatibility

Easy integration with various peripherals and external devices through I2C, SPI, SSC, UART/USART, USB interfaces

Application Areas

Industrial control systems

Medical devices

Consumer electronics

Automotive applications

Portable devices

Product Lifecycle

This product is Obsolete, suggesting that designers should consider alternative solutions for new designs

Availability of replacements or upgrades needs to be checked with Microchip Technology for long-term projects

Several Key Reasons to Choose This Product

ARM7® core offers a balance between performance and power consumption

High integration reduces system BOM cost and design complexity

Wide operating temperature range makes it suitable for harsh environment applications

Obsolete status necessitates careful stock management or seeking newer alternatives for future designs

Comprehensive connectivity options enhance interfacing with various digital and analog devices