The AT91R40008 microcontroller is a member of the Atmel AT91 16/32-bit microcon-
roller 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-
ion handling, and making the device ideal for real-time control applications.

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