AT91 Family AT91R Series Microcontrollers ARM Microcontrollers:

The AT91R Series is a subset of the Atmel AT91 16/32-bit microcontroller family, which is based on the ARM7TDMI processor core. This processor has a high-performance 32-bit RISC architecture with a high-density 16-bit instruction set and very low power consumption.

• Max CPU Speed 75 MZ
• SRAM: Up to 256KB, ROM: Up to 128KB
• Interfaces: USARTs.
• Programmable Watchdog Timer
• 16-bit Timer/Counter
• Advanced Power-saving Features
• Fully Programmable External Bus Interface (EBI)
• 8-level Priority, Individually Maskable, Vectored Interrupt Controller
• 32 Programmable I/O Lines
• Applications: Power Regulators, Battery Capacity Monitoring, Motor Control And Power Applications