AT91R40807

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)
• 136K Bytes On-chip SRAM
32-bitData 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
• Fully Static Operation:
0 Hz to 33 MHz Internal Frequency Range at 3.0V, 85°C
• 1.8V to 3.6V Operating Range
• -40°C to +85°C Temperature Range
• Available in a 100-lead TQFP Package



Pinout




Description

The AT91R40807 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. 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 AT91R40807 microcontroller 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, 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 AT91R40807 is a powerful microcontroller that offers a flexible and high-performance solution to many computeintensive embedded control applications.