ARM ARM7TDMI - About the Memory Interface

Memory Interface
3-2 Copyright © 2001, 2004 ARM Limited. All rights reserved. ARM DDI 0210C
3.1 About the memory interface
The ARM7TDMI processor has a Von Neumann architecture, with a single 32-bit data
bus carrying both instructions and data. Only load, store, and swap instructions can
access data from memory.