AT91M40400-25C ATMEL Corporation, AT91M40400-25C Datasheet

AT91M40400-25C

Manufacturer Part Number

AT91M40400-25C

Description

16/32-bit Microcontroller, 2.7V to 3.6V Operating Range

Manufacturer

ATMEL Corporation

Datasheet

1.AT91M40400-25C.pdf (116 pages)

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Features

•

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-perfor-

mance 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 applica-

tions.

The AT91M40400 features a direct connection to off-chip memory, including Flash,

through the fully programmable External Bus Interface (EBI). An eight-level priority

vectored interrupt controller, in conjuction with the Peripheral Data Controller signifi-

cantly improve the real-time performance of the device.

The device is manufactured using Atmel’s high density CMOS technology. By combin-

ing the ARM7TDMI microcontroller core with on-chip RAM and a wide range of periph-

eral functions on a monolithic chip, the Atmel AT91M40400 is a powerful microcontrol-

ler that offers a flexible, cost-effective solution to many compute-intensive embedded

control applications.

Incorporates the ARM7TDMI

Fully Programmable External Bus Interface (EBI)

4K Bytes Internal RAM

8-level Priority, Individually Maskable, Vectored Interrupt Controller

32 Programmable I/O Lines

3-channel 16-bit Timer/Counter

2 USARTs

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

– High-performance 32-bit RISC Architecture

– High-density 16-bit Instruction Set

– Leader in MIPS/Watt

– Embedded ICE (In Circuit Emulation)

– Maximum External Address Space of 64M Bytes

– Up to 8 Chip Selects

– Software Programmable 8/16-bit External Databus

– 4 External interrupts, including a High-priority Low-latency Interrupt Request

– 3 External Clock Inputs

– 2 Multi-purpose I/O Pins per Channel

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

™

ARM

Thumb

Processor Core

AT91

ARM

Microcontrollers

AT91M40400

Thumb

Rev. 0768C–10/99

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