Freescale Semiconductor,inc.

Jing Cui

Shayan Zhang

Yunwu Zhao

Wen Gu

An integrated circuit (IC) and associated method support using a pre-use configuration for determining an initial/preferred operational mode for the IC from plural operational modes that may be entered following power-up cycles of the IC. The initial/preferred operational mode can be determined after the design phase of the IC so that, during IC operation, wasted power or delay are not incurred by first requiring that the IC power up in a default operational mode and subsequently run executive code to reprogram the IC to enter an operational mode that is preferred for the application for which the IC is being used by the IC integrator/user. The configurations determine clock frequencies and/or power levels for core processing and/or peripheral modules and allow the same IC design/die to be targeted to a spectrum of different power usage/performance applications by the integrator/user.

Integrated circuit with selectable power-on reset mode

Power control circuitry for a data processor supplies a memory array with a supply voltage corresponding to a memory performance level. The performance levels include a full performance level and a power-saving performance level. Voltage sensing circuitry senses a voltage level of the memory array and outputs a power status signal. The power status signal is used to determine when the memory array is awake and can be accessed.

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Tianjin, China

Jing Cui