JSD AT91R40008-66AU Integrated Circuits Ic Chips Electronic Component FPGA Board Microcontroller

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 Request

• 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

• Available in 100-lead TQFP Package

• -40° C to +85° C Temperature Range 1. Description 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.