Description

The AT91M40400 is a member 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)

• 4K Bytes Internal RAM

• 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

• Low-power Idle Mode

• Fully Static Operation: 0 Hz to 33 MHz

• 2.7V to 3.6V Operating Range

• Available in a 100-lead TQFP Package