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    • 1. 发明授权
    • Clock generating circuit and clock generating method
    • 时钟发生电路和时钟发生方法
    • US06888391B2
    • 2005-05-03
    • US10306314
    • 2002-11-27
    • Takahiro Saita
    • Takahiro Saita
    • G11C5/14G06F1/04H03B5/32H03K3/012H03K3/014H03K3/02H03K3/03H03L3/00H03K3/00
    • G06F1/04B60W2520/105B60W2520/28B60W2530/10B60W2530/16B60W2550/142H03K3/012H03K3/014H03K3/0307
    • A clock generating circuit (100) that may prevent an erroneous clock signal from being provided to an internal logic circuit (105) has been disclosed. A clock generating circuit (100) may include a variable voltage generating circuit (101), an oscillating circuit (103), and a control circuit (104). Oscillating circuit (103) may provide an original clock signal (157). A charging circuit (122, 123, and 124) may provide charging of a signal (159) when an original clock signal (157) achieves a predetermined amplitude. When signal (157) charges sufficiently, an oscillation stabilization signal may be provided to enable the generation of a synthesized clock signal (160). Also, at this time, a reduced voltage (170) may be provided to power an oscillating circuit (103). In this way, current consumption may be reduced and failures due to providing an erroneous clock signal to an internal logic circuit may be reduced.
    • 已经公开了可以防止错误的时钟信号被提供给内部逻辑电路(105)的时钟发生电路(100)。 时钟发生电路(100)可以包括可变电压发生电路(101),振荡电路(103)和控制电路(104)。 振荡电路(103)可以提供原始时钟信号(157)。 当原始时钟信号(157)达到预定幅度时,充电电路(122,123和124)可以提供信号(159)的充电。 当信号(157)充分充电时,可以提供振荡稳定信号以使得能够产生合成时钟信号(160)。 此外,此时,可以提供降低的电压(170)来为振荡电路(103)供电。 以这种方式,可以减少电流消耗,并且可能减少由于向内部逻辑电路提供错误的时钟信号而导致的故障。