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AT91 Datasheet(PDF) 1 Page - ATMEL Corporation |
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AT91 Datasheet(HTML) 1 Page - ATMEL Corporation |
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1 / 153 page  1 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 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’s 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. Microcontroller Primary SRAM Bank Secondary SRAM Bank ROM AT91M40800 8K Bytes – – AT91R40807 8K Bytes 128K Bytes – AT91M40807 8K Bytes – 128K Bytes AT91R40008 256K Bytes – – AT91 ARM ® Thumb® Microcontrollers AT91M40800 AT91R40807 AT91M40807 AT91R40008 Rev. 1354D–ATARM–08/02 |
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Similar Description - AT91 |
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