ICROCONTROLLERS

AT91 ARM T

HUMB

ICROCONTROLLERS

ARM

HUMB

Image: Studio Cadrage/Postscriptum

System level integration on a
standard product:

Market-leading ARM7TDMITM 32-bit
RISC processor core

Optimal combination of large SRAM,
ROM and Flash memories

Wide choice of on-chip peripherals

Analog functions: 10-bit ADC/DAC

Low risk, low cost, rapid time-to-market

High performance for compute-
intensive applications:

On-chip 32-bit architecture

3-stage instruction pipeline for high
instruction throughput

Single-cycle memory access via EBI

Hardware multiplier-plus-barrel shifter
gives DSP capability

PDC channels (on-chip DMA) free the
processor for the application

Low power for hand-held
applications:

ARM7TDMI processor is industry leader
in MIPS/Watt

Advanced power management provides
idle mode and disables clocks on
unused peripherals

Optimized for real-time applications:

Low-latency Advanced Vectored
Interrupt Controller

Banked registers for separate stacks
and call/returns in interrupt modes

Wide choice of Real Time Operating
Systems

Extensive application development
tools and support for rapid, low-risk
software development

Widely used in:

Mobile phone accessories

Networking (Ethernet, BluetoothTM
systems, etc.)

GPS, PDA and MP3 players

Internet appliances

Fingerprint recognition

Telecom linecards, base stations and
modems

Medical applications

The AT91 Product Family

The best combination of
low-power consumption,
32-bit performance and
16-bit system cost.

Š Atmel Corporation 2001

Atmel and the Atmel logo are registered
trademarks of Atmel Corporation. ARM,
the ARM-powered logo, ARM7TDMI and
Thumb are trademarks and registered
trademarks of ARM Ltd.

Other terms and product names
may be trademarks of others.

All figures in this brochure are
for illustrative purposes only.
See Atmel data books for definitive
figures and for applicable limitations and
warranties.

0749G-09/01/6M

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Japan

Tel : (+81) 3 3523 3551

Fax : (+81) 3 3523 7581

E-mail

literature@atmel.com

Web Site

http://www.atmel.com

AT91

ARM T

HUMB

ICROCONTROLLERS

Atmel's AT91 series provides the optimal combination of processing power, on-
chip peripherals and memory blocks for demanding real-time applications that
require high performance on a tight power budget. Its wide range of Real Time
Operating Systems and sophisticated application development tools minimize the
risk and time taken to bring new applications to the market. As a standard product
it eliminates the cost and risks of custom IC development. However its modular
design means that application-specific variants can be rapidly developed.

AT91 Architecture

The AT91 series is built around the

industry-leading ARM7TDMI 32-bit RISC
processor core. Variants in the product
range provide the optimal combination of
memory - SRAM, ROM or Flash - for
each application. The External Bus
Interface provides a rapid, flexible
means of connecting additional
memory and application-specific
peripheral devices.

Two key features

significantly enhance the
AT91's real-time
performance. The
Advanced Interrupt
Controller substantially
reduces the processor
overhead in handling internal

and external
interrupts.

The multiple Peripheral

Data Controller channels
allow blocks of data to be
transferred directly between
memory and serial

peripherals without processor intervention.

The peripherals are configurable, and

easily programmable. The extensive
range includes a full-duplex USART, an
SPI operating in master or slave mode,
and a Timer/Counter providing frequency
measurement, event counting, interval
measurement, PWM, etc.

Power Management

The Advanced Power

Management system ensures

that power consumption is

kept to a minimum

under all conditions
of operation. The

processor can be put

in idle mode, and

individual

peripherals

can be disabled

if they are not

used. The fully static

design means that the

clock can be run

extremely slowly, down to zero Hertz

if necessary, to reduce

power consumption to an

absolute minimum.

AT91 Development Tools

Atmel's AT91 series

microcontrollers are fully
supported by state-of-the art
development tools including
C-compilers, Assemblers,
Real Time Operating
Systems and software debug
tools. These are provided by
accredited third-party suppliers.
Low-cost evaluation kits are available for
the entire AT91 range. These
kits provide convenient entry
points for application
developers.

Part Number

FLA

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es)

ask R

(
B

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(

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lti-

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ocessor

I
/
F

16-

t
Ti

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SPI +

PDC

USART

PDC

10-

t
A

10-

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D

I/O

Pin

cc (

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ax C

l
ock

eed

)

ackage(

AT91M40800

1.8-3.6

TQFP100

AT91F40816

2.7-3.6

BGA120

AT91R40807

136K

1.8-3.6

TQFP100

AT91FR4081

136K

2.7-3.6

BGA120

AT91R40008

256K

1.65-3.6

TQFP100

AT91M40807

128K

1.8-3.6

TQFP100

AT91M43300

115

2.7-3.6

BGA144

AT91M63200

144

2.7-3.6

TQFP176

AT91M42800A

108

2.7-3.6

TQFP144

BGA144

AT91M55800A

137

2.7-3.6

TQFP176

BGA176

AT91RM3400

256K

96K

100 1.65-3.6

TQFP100

Part Number AT91