SAM7S32_14 Datasheet, PDF (41/775 Pages) ATMEL Corporation – Internal High-speed Flash

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 processor implements Von Neuman archi-
tecture, 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)
SAM7S Series [DATASHEET] 41
6175M–ATARM–26-Oct-12