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AT91R40008_05 Datasheet, PDF (1/20 Pages) ATMEL Corporation – AT91 ARM Thumb Microcontrollers | |||
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Features
⢠Incorporates the ARM7TDMI® ARM® Thumb® Processor Core
â High-performance 32-bit RISC Architecture
â High-density 16-bit Instruction Set
â Leader in MIPS/Watt
â Little-endian
â EmbeddedICE⢠(In-circuit Emulation)
⢠8-, 16- and 32-bit Read and Write Support
⢠256K Bytes of On-chip SRAM
â 32-bit Data Bus
â Single-clock Cycle Access
⢠Fully-programmable External Bus Interface (EBI)
â Maximum External Address Space of 64M Bytes
â Up to Eight Chip Selects
â Software Programmable 8/16-bit External Data Bus
⢠Eight-level Priority, Individually Maskable, Vectored Interrupt Controller
â Four External Interrupts, Including a High-priority, Low-latency Interrupt Request
⢠32 Programmable I/O Lines
⢠Three-channel 16-bit Timer/Counter
â Three External Clock Inputs
â Two Multi-purpose I/O Pins per Channel
⢠Two USARTs
â Two Dedicated Peripheral Data Controller (PDC) Channels per USART
⢠Programmable Watchdog Timer
⢠Advanced Power-saving Features
â CPU and Peripheral Can be Deactivated Individually
⢠Fully Static Operation
â 0 Hz to 75 MHz Internal Frequency Range at VDDCORE = 1.8V, 85°C
⢠2.7V to 3.6V I/O Operating Range
⢠1.65V to 1.95V Core Operating Range
⢠Available in 100-lead TQFP Package
⢠-40° C to +85° C Temperature Range
AT91
ARM® Thumb®
Microcontrollers
AT91R40008
Electrical
Characteristics
1. Description
The AT91R40008 microcontroller is a member of the Atmel AT91 16-/32-bit microcon-
troller 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. Furthermore, it features 256K bytes of on-chip
SRAM and a large number of internally banked registers, resulting in very fast excep-
tion handling, and making the device ideal for real-time control applications.
The AT91R40008 microcontroller features a direct connection to off-chip memory,
including Flash, through the fully-programmable External Bus Interface (EBI). An
8-level priority vectored interrupt controller, in conjunction with the Peripheral Data
Controller, significantly improves the real-time performance of the device.
The device is manufactured using Atmelâs high-density CMOS technology. By com-
bining the ARM7TDMI processor core with a large, on-chip, high-speed SRAM and a
wide range of peripheral functions on a monolithic chip, the AT91R40008 is a powerful
microcontroller that offers a flexible and high-performance solution to many compute-
intensive embedded control applications.
1795EâATARMâ12-Dec-05
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