Microprocessor with hardware controlled power management and selectable input/output control pins

摘要

A data processing device includes a plurality of subcircuits and circuitry for generating clock signals thereto. Detection circuitry detects the assertion of a control signal and disabling circuitry is operable to disable the clock signals to one or more of the subcircuits responsive to the control signal. In addition, circuitry is provided for selectively decoupling one or more subcircuits with associated input/output pins such that pins associated with enhanced features may be decoupled to provide compatibility with a desired microprocessor architecture.