In an integrated circuit device, a power circuit for maintaining asserted
values on an input output pin of the device when a functional block of
the device is placed in a sleep mode. The device includes a power circuit
disposed along the periphery of the device, the power circuit configured
to maintain power when the device is placed in a low-power mode. A
plurality of input output blocks are included in the device and are for
receiving external inputs for the integrated circuit device and for
providing outputs from the integrated circuit device. The power circuit
is coupled to provide power to at least one of the input output blocks to
maintain state when the integrated circuit device is in the low-power
mode.