AT91SAM9XE256-CU

Product Overview

• Category: Microcontroller
• Use: Embedded systems, Internet of Things (IoT) devices, industrial automation
• Characteristics: High-performance, low-power consumption, integrated peripherals
• Package: 144-pin LQFP (Low-profile Quad Flat Package)
• Essence: ARM926EJ-S core-based microcontroller

Specifications

• Processor: ARM926EJ-S core running at up to 400 MHz
• Memory: 256 KB embedded SRAM, 64 KB ROM, external memory interface
• Peripherals: USB 2.0, Ethernet MAC, LCD controller, UART, SPI, I2C, PWM, ADC
• Operating Voltage: 1.65V to 3.6V
• Operating Temperature: -40°C to +85°C
• Package Dimensions: 20mm x 20mm x 1.4mm

Pin Configuration

The AT91SAM9XE256-CU microcontroller has a total of 144 pins. The pin configuration is as follows:

• Pins 1-10: Power supply and ground pins
• Pins 11-30: General-purpose input/output (GPIO) pins
• Pins 31-50: Analog-to-digital converter (ADC) pins
• Pins 51-70: Serial peripheral interface (SPI) pins
• Pins 71-90: Inter-integrated circuit (I2C) pins
• Pins 91-110: Universal asynchronous receiver-transmitter (UART) pins
• Pins 111-130: Pulse-width modulation (PWM) pins
• Pins 131-144: Miscellaneous pins (USB, Ethernet, etc.)

Functional Features

• High-performance ARM926EJ-S core for efficient processing
• Integrated peripherals for easy system integration
• Low-power consumption for extended battery life
• USB and Ethernet connectivity for communication purposes
• LCD controller for graphical user interface (GUI) applications
• Multiple serial communication interfaces (UART, SPI, I2C)
• Analog-to-digital converter (ADC) for sensor interfacing
• Pulse-width modulation (PWM) for precise control of motors and actuators

Advantages and Disadvantages

Advantages

• High processing power for demanding applications
• Integrated peripherals reduce external component count
• Low-power consumption extends battery life in portable devices
• Wide operating temperature range suitable for industrial environments
• Compact package size allows for space-constrained designs

Disadvantages

• Limited on-chip memory may require external memory expansion
• Lack of built-in wireless connectivity (Wi-Fi, Bluetooth, etc.)
• Higher cost compared to lower-end microcontrollers

Working Principles

The AT91SAM9XE256-CU microcontroller operates based on the ARM926EJ-S core architecture. It executes instructions fetched from its internal memory or external memory through the memory interface. The integrated peripherals allow the microcontroller to interact with various external devices and sensors. The processor's clock speed determines the execution speed of instructions, while the voltage supply ensures stable operation.

Application Field Plans

The AT91SAM9XE256-CU microcontroller finds applications in various fields, including:

1. Industrial automation: Control systems, robotics, and process monitoring
2. Internet of Things (IoT): Smart home devices, environmental monitoring
3. Automotive: Infotainment systems, engine control units (ECUs)
4. Medical devices: Patient monitoring, diagnostic equipment
5. Consumer electronics: Home appliances, wearable devices

Alternative Models

• AT91SAM9G25-CU: Similar features but lower memory capacity
• AT91SAM9X35-CU: Higher performance with additional features
• AT91SAM9G45-CU: Enhanced graphics capabilities for display-intensive applications

Note: This entry has a total of 452 words.