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Description

The AT91X40 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. In addition, a large number of internally banked registers result in very fast exception handling, making the device ideal for real-time control applications.

Features

? Incorporates the ARM7TDMI? ARM? Thumb? Processor Core

– High-performance 32-bit RISC Architecture

– High-density 16-bit Instruction Set

– Leader in MIPS/Watt

– Embedded ICE (In-Circuit Emulation)

? On-chip SRAM and/or ROM

– 32-bit Data Bus

– Single-clock Cycle Access

? Fully Programmable External Bus Interface (EBI)

– Maximum External Address Space of 64M Bytes

– Up to 8 Chip Selects

– Software Programmable 8/16-bit External Databus

? 8-level Priority, Individually Maskable, Vectored Interrupt Controller

– 4 External Interrupts, Including a High-priority Low-latency Interrupt Request

? 32 Programmable I/O Lines

? 3-channel 16-bit Timer/Counter

– 3 External Clock Inputs

– 2 Multi-purpose I/O Pins per Channel

? 2 USARTs

– 2 Dedicated Peripheral Data Controller (PDC) Channels per USART

? Programmable Watchdog Timer

? Advanced Power-saving Features

– CPU and Peripheral Can be Deactivated Individually

? Available in a 100-lead TQFP Package