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The AT91SAM7X256C-AU is a microcontroller from Microchip Technology based on the ARM7TDMI core. Below are its key specifications, descriptions, and features:

Manufacturer:

Microchip Technology

Specifications:

• Core: ARM7TDMI (32-bit RISC processor)
• Operating Frequency: Up to 55 MHz
• Flash Memory: 256 KB
• SRAM: 64 KB
• Operating Voltage: 1.8V to 3.6V
• Package: 100-pin LQFP (14x14mm)
• Temperature Range: -40°C to +85°C
• I/O Pins: 32
• Timers:
• Three 16-bit timers
• One 32-bit timer
• Communication Interfaces:
• USB 2.0 Full-Speed Device Port
• USART (2 channels)
• SPI (2 channels)
• TWI (I²C-compatible, 1 channel)
• SSC (Synchronous Serial Controller)
• Analog Features:
• 8-channel 10-bit ADC
• DMA Controller: 4-channel
• Watchdog Timer: Programmable
• Power Management:
• Multiple low-power modes (Idle, Sleep, Backup)
• Debug Interface: JTAG Boundary Scan

Descriptions:

The AT91SAM7X256C-AU is a high-performance microcontroller designed for embedded applications requiring USB connectivity, real-time control, and low-power operation. It integrates 256 KB of Flash and 64 KB of SRAM, making it suitable for complex firmware applications.

Features:

• ARM7TDMI Core with efficient Thumb instruction set
• On-chip USB 2.0 Full-Speed Device with dedicated DMA
• Multiple communication interfaces (USART, SPI, TWI, SSC)
• 10-bit ADC for analog signal processing
• Flexible power management for battery-powered applications
• Industrial temperature range (-40°C to +85°C)
• Robust peripheral set including PWM, timers, and DMA

This microcontroller is commonly used in industrial control, consumer electronics, and USB-enabled embedded systems.