
ARMTHE WORLD’S MOST POPULAR 32BIT EMBEDDED PROCESSOR 427
High speed versions (LPC 1769 and LPC 1759) operate at up to a 120 MHz CPU
frequency. Other versions operate at up to an 100 MHz CPU frequency. e ARM
Cortex-M3 CPU incorporates a 3-stage pipeline and uses a Harvard architecture with
separate local instruction and data buses as well as a third bus for peripherals. It also
includes an internal prefetch unit that supports speculative branches.
e peripheral complement of the LPC 17xx includes up to 512 kB of fl ash mem-
ory, up to 64 kB of data memory, Ethernet MAC, a USB interface that can be confi gured
as either Host, Device, or OTG, ...