SAM7SE512_14 Datasheet, PDF (43/682 Pages) ATMEL Corporation – High-performance 32-bit RISC Architecture

SAM7SE512/256/32
11. ARM7TDMI Processor Overview
11.1 Overview
The ARM7TDMI core executes both the 32-bit ARM and 16-bit Thumb instruction sets, allowing
the user to trade off between high performance and high code density.The ARM7TDMI proces-
sor implements Von Neuman architecture, using a three-stage pipeline consisting of Fetch,
Decode, and Execute stages.
The main features of the ARM7tDMI processor are:
• ARM7TDMI Based on ARMv4T Architecture
• Two Instruction Sets
– ARM High-performance 32-bit Instruction Set
– Thumb High Code Density 16-bit Instruction Set
• Three-Stage Pipeline Architecture
– Instruction Fetch (F)
– Instruction Decode (D)
– Execute (E)
43
6222H–ATARM–25-Jan-12