An integrated circuit is provided that includes an execution engine and a
memory controller. The execution engine is clocked at a first rate and
the memory controller is clocked at a second rate that is less than the
first rate. Pins on the integrated circuit can transfer data to and from
the integrated circuit on both the rising and falling edges of a second
clock transitioning at the second clock rate. The integrated circuit is
preferably packaged using a lead frame and wire bonds extending from pads
on the integrated circuit to corresponding leads. The leads are secured
to trace conductors on a surface of a printed circuit board. The board
contains no more than two conductive layers separated by a dielectric
layer. Thus, an overall electronic system is formed having a board with
no more than two conductive layers, an execution engine that receives a
first clock signal, a memory controller which receives a second clock
signal, and a memory device that sends data to and from the memory
controller at twice the rate of the second clock signal. Using a
throttled second clock signal allows for less expensive packaging and
mounting of packaged integrated circuits on a less expensive PCB, while
still maintaining use of a DDR DRAM transfer mechanism.