Electrical computers and digital processing systems: support – Clock control of data processing system – component – or data...
Patent
1998-03-27
2000-12-19
Lee, Thomas C.
Electrical computers and digital processing systems: support
Clock control of data processing system, component, or data...
713322, 713100, G06F 104
Patent
active
06163851&
ABSTRACT:
A data processor including an alternative clock generator for generating, in a power saving mode, an alternative clock signal which is supplied to a peripheral circuit instead of a system clock signal. This enables only the peripheral circuit such as an A/D converter to be put into operation in response to the alternative clock signal in the power saving mode. This solves a problem of a conventional data processor in that it cannot achieve the power saving efficiently because it is unavoidable for the remaining portion of the conventional data processor like a CPU to be involved in a high-rate operation along with the peripheral circuit even if it is desired to operate only the peripheral circuit at a high-rate when releasing the sleep mode or changing the sleep mode to a high-rate mode.
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"Mitsubishi 8-bit Single-chip Microcomputer 740 Family/38000 Series 3851 Group User's Manual", Mitsubishi Electric Corporation, Jul. 1998.
Suzuki Shin'ichi
Yamazoe Hirofumi
Lee Thomas C.
Mai Ri Jue
Mitsubishi Denki & Kabushiki Kaisha
Mitsubishi Electric System LSI Design Corporation
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