AT91R40008-66AU

The AT91R40008 microcontroller 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-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 exception 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 Atmel’s high-density CMOS technology. By combining 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 computeintensive embedded control applications.

Key features

• Incorporates the ARM7TDMI ARM Thumb Processor Core
• High-performance 32-bit RISC Architecture
• High-density 16-bit Instruction Set
• Leader in MIPS/Watt
• Little-endian
• EmbeddedICE (In-circuit Emulation)
• 8-, 16- and 32-bit Read and Write Support
• 256K Bytes of On-chip SRAM
• 32-bit Data Bus
• Single-clock Cycle Access
• Fully Programmable External Bus Interface (EBI)
• Maximum External Address Space of 64M Bytes
• Up to Eight Chip Selects
• Software Programmable 8/16-bit External Data Bus
• Eight-level Priority, Individually Maskable, Vectored Interrupt Controller
• Four External Interrupts, including a High-priority, Low-latency Interrupt Requ
• 32 Programmable I/O Lines
• Three-channel 16-bit Timer/Counter
• Three External Clock Inputs
• Two Multi-purpose I/O Pins per Channel
• Two USARTs
• Two Dedicated Peripheral Data Controller (PDC) Channels per USART
• Programmable Watchdog Timer
• Advanced Power-saving Features
• CPU and Peripheral Can be Deactivated Individually
• Fully Static Operation
• 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
• - 40° C to ± 85° C Temperature Range
• Available in 100-lead LQFP Package (Green)