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1. 发明授权

US10523184B2 Oscillator, method of operating the same, and PWM controller including the same 有权
公开(公告)号：US10523184B2
公开(公告)日：2019-12-31
申请号：US15813279
申请日：2017-11-15
申请人： SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
发明人： Wookang Jin , Sungwon Yun , Youngmo Yang
IPC分类号： H03K3/014 , H02M3/156 , H03K3/0231 , H03K7/08 , H03K4/502 , H02M1/00
摘要： An oscillator for a pulse width modulation (PWM) controller includes an oscillation circuit including a capacitor and configured to generate a first pulse signal by charging and discharging the capacitor, a frequency divider configured to generate a second pulse signal based on the first pulse signal, the second pulse signal having a lower frequency than the first pulse signal, and an oscillation control circuit coupled to the oscillation circuit and the frequency divider and configured to generate control signals for holding the charging and discharging of the capacitor during an oscillation holding operation.

2. 发明授权

US10248604B2 Microcontroller programmable system on a chip 有权
公开(公告)号：US10248604B2
公开(公告)日：2019-04-02
申请号：US15453492
申请日：2017-03-08
申请人： Cypress Semiconductor Corporation
发明人： Warren S. Snyder , Monte Mar
IPC分类号： G06F13/40 , G06F1/08 , G06F1/32 , G06F15/78 , G06G7/06 , H03B5/36 , H03H19/00 , H03K3/012 , H03K3/014 , H03K3/0231 , G06F9/445 , G06F13/10 , G06F13/36 , G11C16/10 , H03B5/32 , G05B19/042 , G06F13/42
摘要： Embodiments of the present invention are directed to a microcontroller device having a microprocessor, programmable memory components, and programmable analog and digital blocks. The programmable analog and digital blocks are configurable based on programming information stored in the memory components. Programmable interconnect logic, also programmable from the memory components, is used to couple the programmable analog and digital blocks as needed. The advanced microcontroller design also includes programmable input/output blocks for coupling selected signals to external pins. The memory components also include user programs that the embedded microprocessor executes. These programs may include instructions for programming the digital and analog blocks “on-the-fly,” e.g., dynamically. In one implementation, there are a plurality of programmable digital blocks and a plurality of programmable analog blocks.

3. 发明授权

US09887691B2 Periodic signal generation circuit and semiconductor system including the same 有权
公开(公告)号：US09887691B2
公开(公告)日：2018-02-06
申请号：US15634646
申请日：2017-06-27
申请人： SK hynix Inc.
发明人： Myeong Jae Park , Kyung Hoon Kim , Woo Yeol Shin , Han Kyu Chi
IPC分类号： H03K3/03 , H03K5/13 , H03K3/014
CPC分类号： H03K3/0315 , H03K3/014 , H03K5/13 , H03K5/19
摘要： A semiconductor system may include a first semiconductor device configured to output a command and receive data. The semiconductor system may include a second semiconductor device configured to generate a period signal, the period signals periodically toggled in response to the command, output the data in response to the period signal, and discharge the charges of an internal node if the period signal is not toggled during a predetermined section.

4. 发明授权

US6028492A Voltage-controlled oscillator and non-contact IC card including voltage-controlled oscillator 失效
标题翻译：压控振荡器和非接触式IC卡，包括压控振荡器
公开(公告)号：US6028492A
公开(公告)日：2000-02-22
申请号：US742765
申请日：1996-11-01
申请人： Toshiyuki Matsubara
发明人： Toshiyuki Matsubara
IPC分类号： G06K19/07 , G06K19/073 , H03K3/014 , H03K3/03 , H03K3/354 , H03L7/00 , H03B5/06 , H03B5/24
CPC分类号： G06K19/0701 , G06K19/0723 , G06K19/073 , H03K3/014 , H03K3/03 , H03K3/354
摘要： A voltage-controlled oscillator VCO capable of reliably generating an oscillation even if it, after stopping with electric charges remaining on both of its capacitors, is restarted under the same conditions. Even if the VCO is started with charges remaining on capacitors, N-channel transistors are both turned on because outputs of differential circuits are both at H level. N-channel transistors are both turned off because their gates are connected with the drains of the N-channel transistors. Therefore, in no case, the levels at points C and D as outputs on both sides of latch circuit go to L level at the same time.
摘要翻译：即使在停留在其两个电容器上的电荷的情况下，也能够可靠地产生振荡的压控振荡器VCO在相同条件下重新启动。即使在电容器上剩余电荷开始VCO的情况下，由于差分电路的输出均为H电平，所以N沟道晶体管都导通。 N沟道晶体管都截止，因为它们的栅极与N沟道晶体管的漏极连接。因此，在任何情况下，锁存电路两侧的输出端C点和D点的电平同时变为L电平。

5. 发明授权

US5914643A Source coupled CMOS crystal oscillator 失效
标题翻译：源极耦合CMOS晶体振荡器
公开(公告)号：US5914643A
公开(公告)日：1999-06-22
申请号：US989611
申请日：1997-12-12
申请人： Steven Tinsley , Fernando Carvajal
发明人： Steven Tinsley , Fernando Carvajal
IPC分类号： H03B5/32 , H03B5/36 , H03K3/014 , H03K3/354
CPC分类号： H03B5/364 , H03K3/014 , H03K3/3545
摘要： A CMOS oscillator includes two differential input transistors (150) and (152) which have the sources thereof coupled through a resonator element (196). Active loads (166) and (178) provide a squaring up of the output which then drives an output transistor (202). The gates of the differential input transistors (150) and (152) are biased to predetermined voltage levels with bias circuits, with the positive input of the comparator configuration coupled through a feedback capacitor (208) to the output (204). This provides sufficient instability to initiate oscillation with a gain of the device controlled by resonator circuit (196) to be optoimum at the resonant frequency of the resonator circuit.
摘要翻译： CMOS振荡器包括两个差分输入晶体管（150）和（152），它们的源极通过谐振元件（196）耦合。有源负载（166）和（178）提供输出的平方，然后驱动输出晶体管（202）。差分输入晶体管（150）和（152）的栅极通过偏置电路偏置到预定的电压电平，其中比较器配置的正输入通过反馈电容器（208）耦合到输出端（204）。这提供了充分的不稳定性，以便谐振器电路（196）控制的器件的增益在谐振器电路的谐振频率处是最佳的振荡。

6. 发明授权

US5805027A Low current crystal oscillator with fast start-up time 失效
标题翻译：低电流晶振，启动时间快
公开(公告)号：US5805027A
公开(公告)日：1998-09-08
申请号：US642271
申请日：1996-05-03
申请人： Rong Yin
发明人： Rong Yin
IPC分类号： H03K3/014 , H03K3/354 , H03B5/06 , H03B5/36
CPC分类号： H03K3/014 , H03K3/3545
摘要： Crystal oscillator circuitry provides a very fast start-up function requiring less than 100 mS. The crystal oscillator circuitry enters a stop mode when a control signal transitions from a first logic level to a second logic level thereby causing a crystal to stop oscillating. In order to initiate the fast start-up function, a pulse is provided to the gate of a transistor which is electrically connected between a first node and a second node, thus causing the voltage of the first node to move towards the voltage level of the second node and the second node to move towards the voltage level of the first node. Upon initiation of the start-up function, the energy at the crystal of the crystal oscillator circuitry is at least four times higher than the energy required in a steady state mode. The crystal oscillator circuitry has a VT (threshold voltage) independent high feedback resistance which provides stable oscillation frequency over a wide range of Vcc supply voltage. The VT independent high feedback resistance is ensured by proper sizing of the transistors of the crystal oscillator circuitry.
摘要翻译：晶体振荡器电路提供非常快的启动功能，需要小于100 mS。当控制信号从第一逻辑电平转换到第二逻辑电平时，晶体振荡器电路进入停止模式，从而导致晶体停止振荡。为了启动快速启动功能，将脉冲提供给电连接在第一节点和第二节点之间的晶体管的栅极，从而使得第一节点的电压朝向第二节点和第二节点朝向第一节点的电压电平移动。在起动功能开始时，晶体振荡器电路的晶体的能量比稳定状态模式中所需的能量高至少四倍。晶体振荡器电路具有独立的VT（阈值电压）独立的高反馈电阻，可在宽范围的Vcc电源电压下提供稳定的振荡频率。通过晶体振荡器电路的晶体管的适当尺寸确保VT独立的高反馈电阻。

7. 发明授权

US5719534A Semiconductor integrated circuit having low power consumption oscillator 失效
标题翻译：具有低功耗振荡器的半导体集成电路
公开(公告)号：US5719534A
公开(公告)日：1998-02-17
申请号：US594298
申请日：1996-01-30
申请人： Satoru Imura
发明人： Satoru Imura
IPC分类号： H01L27/04 , H01L21/822 , H03B5/06 , H03B5/32 , H03K3/012 , H03K3/014 , H03K3/03 , H03K3/354 , H03L5/00
CPC分类号： H03K3/014 , H03K3/012 , H03K3/03 , H03K3/0307 , H03K3/3545
摘要： A semiconductor integrated circuit has a constant voltage generation circuit and an oscillation circuit for generating a clock signal. The constant voltage generation circuit supplies a first voltage to the oscillation circuit until the clock signal is stabilized and the constant voltage generation circuit supplies a second voltage lower than the first voltage to the oscillation circuit after the clock signal has been stabilized.
摘要翻译：半导体集成电路具有用于产生时钟信号的恒压产生电路和振荡电路。恒定电压产生电路在时钟信号稳定之后向振荡电路提供第一电压，并且恒定电压产生电路在时钟信号稳定后向振荡电路提供低于第一电压的第二电压。

8. 发明授权

US5479644A Microcomputer having an oscillator part with variable driving ability 失效
标题翻译：微型计算机具有可变驱动能力的振荡器部分
公开(公告)号：US5479644A
公开(公告)日：1995-12-26
申请号：US290571
申请日：1994-08-15
申请人： Katsunobu Hongo
发明人： Katsunobu Hongo
IPC分类号： G06F1/04 , G06F1/08 , G06F1/32 , G06F15/78 , H03K3/014 , H03K3/03 , H03L3/00
CPC分类号： G06F1/324 , G06F1/08 , G06F1/3203 , H03K3/014 , H03K3/0307 , H03L3/00 , Y02B60/1217
摘要： A microcomputer having a frequency divider for dividing, at multiple stages, the frequency of the clock generated by an oscillator circuit, a selector for selecting from among the resulting divided frequency clocks, a counter for counting the divided frequency clock selected, a switch for changing the driving ability of the oscillator circuit, and a select bit in which data on selecting the on or off control over the switch is written, wherein the driving ability of the oscillator circuit is set large in initiating oscillation and low after initiating the supply of its internal clock, independently of the program.
摘要翻译：一种具有分频器的微型计算机，用于在多个阶段分频由振荡器电路产生的时钟的频率，用于从所产生的分频时钟中选择用于对所选择的分频时钟进行计数的计数器，用于改变振荡器电路的驱动能力以及写入开关上的开关控制选择数据的选择位，其中振荡电路的驱动能力在启动振荡时被设定得很大，并且在开始提供其之后的低电平内部时钟，独立于程序。

9. 发明授权

US5446403A Power on reset signal circuit with clock inhibit and delayed reset 失效
标题翻译：上电复位信号电路，具有时钟禁止和延迟复位
公开(公告)号：US5446403A
公开(公告)日：1995-08-29
申请号：US192178
申请日：1994-02-04
申请人： Todd R. Witkowski
发明人： Todd R. Witkowski
IPC分类号： G06F1/24 , H03K3/014
CPC分类号： G06F1/24
摘要： A control circuit inhibits the CLOCK input to the CPU during power-up to prevent newer submicron CPUs from locking up during a power-up condition. The control circuit also provides a delayed control signal representing that the power supply has stabilized. This delayed control signal is used to consistently control the RESET signal.
摘要翻译：控制电路在上电期间禁止对CPU的CLOCK输入，以防止在上电状态期间新的亚微米CPU锁定。控制电路还提供表示电源稳定的延迟控制信号。该延迟控制信号用于始终控制RESET信号。

10. 发明授权

US5304958A Saw oscillator gain amplifier with auto phase shift 失效
标题翻译：带自动相移的振荡器增益放大器
公开(公告)号：US5304958A
公开(公告)日：1994-04-19
申请号：US979677
申请日：1992-11-20
申请人： Paul B. Sofianos , Phuc C. Pham , Dwight D. Esgar
发明人： Paul B. Sofianos , Phuc C. Pham , Dwight D. Esgar
IPC分类号： H03B5/30 , H03B5/32 , H03K3/014 , H03K3/03 , H03L7/06 , H03B5/12
CPC分类号： H03K3/014 , H03B5/326 , H03K3/0307 , Y10S331/03
摘要： A gain stage for providing an automatic phase shift is provided. In particular, the gain stage detects whether an oscillation signal appears at its inputs. If an oscillation signal is not detected, then the gain stage inverts output signals occurring at outputs of a first amplifier before being respectively applied to inputs of a second amplifier. This has the overall effect of implementing a 180.degree. phase shift of a signal appearing at the outputs of the gain stage with respect to a signal appearing at the inputs of the gain stage.
摘要翻译：提供了一种用于提供自动相移的增益级。特别地，增益级检测振荡信号是否出现在其输入端。如果没有检测到振荡信号，则增益级在分别施加到第二放大器的输入之前将在第一放大器的输出处发生的输出信号反相。这具有相对于在增益级的输入处出现的信号实现在增益级的输出处出现的信号的180度相移的总体效果。

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