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AT91X40 Datasheet

  • AT91X40

  • AT91 ARM Thumb Microcontrollers

  • 153頁

  • ATMEL   ATMEL

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Features
鈥?/div>
Incorporates the ARM7TDMI
鈩?/div>
ARM
廬
Thumb
廬
Processor Core
鈥?High-performance 32-bit RISC Architecture
鈥?High-density 16-bit Instruction Set
鈥?Leader in MIPS/Watt
鈥?Embedded ICE (In-Circuit Emulation)
On-chip SRAM and/or ROM
鈥?32-bit Data Bus
鈥?Single-clock Cycle Access
Fully Programmable External Bus Interface (EBI)
鈥?Maximum External Address Space of 64M Bytes
鈥?Up to 8 Chip Selects
鈥?Software Programmable 8/16-bit External Databus
8-level Priority, Individually Maskable, Vectored Interrupt Controller
鈥?4 External Interrupts, Including a High-priority Low-latency Interrupt Request
32 Programmable I/O Lines
3-channel 16-bit Timer/Counter
鈥?3 External Clock Inputs
鈥?2 Multi-purpose I/O Pins per Channel
2 USARTs
鈥?2 Dedicated Peripheral Data Controller (PDC) Channels per USART
Programmable Watchdog Timer
Advanced Power-saving Features
鈥?CPU and Peripheral Can be Deactivated Individually
Available in a 100-lead TQFP Package
Microcontroller
AT91M40800
AT91R40807
AT91M40807
AT91R40008
Primary SRAM Bank
8K Bytes
8K Bytes
8K Bytes
256K Bytes
Secondary SRAM Bank
鈥?/div>
128K Bytes
鈥?/div>
鈥?/div>
ROM
鈥?/div>
鈥?/div>
128K Bytes
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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AT91
ARM
廬
Thumb
廬
Microcontrollers
AT91M40800
AT91R40807
AT91M40807
AT91R40008
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-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 applications.
The AT91X40 Series 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 conjunction with the Peripheral Data Controller signifi-
cantly improve the real-time performance of the device.
The devices are manufactured using Atmel鈥檚 high-density CMOS technology. By com-
bining the ARM7TDMI processor core with on-chip high-speed memory and a wide
range of peripheral functions on a monolithic chip, the Atmel AT91X40 Series is a fam-
ily of powerful microcontrollers that offer a flexible, cost-effective solution to many
compute-intensive embedded control applications.
Rev. 1354D鈥揂TARM鈥?5/02
1

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