ARM7TDMI Block Diagram

Von Neumann Architecture
32-bit Data Bus
32-bit Address Bus
3-stage pipeline
- fetch, decode, execute
37 32-bit registers
32-bit ARM instruction set
16-bit THUMB instruction set
32x8 Multiplier Barrel Shifter

Its outstanding feature is the 16-bit THUMB subset of the most commonly used 32-bit instructions. This gives 16-bit code density coupled with 32-bit processor performance. It features an integrated 32x8 multiplier and 32-bit barrel shifter. Five independent internal buses allow a high degree of parallelism in instruction execution.