公开(公告)号：US20130285717A1

公开(公告)日：2013-10-31

申请号：US13924153

申请日：2013-06-21

申请人： Altera Corporation

发明人： Ping Xiao ,  Weiyding Ding ,  Leo Min Maung

IPC分类号： H03L7/00

CPC分类号： H03L7/00 ,  G06F1/24 ,  H03K17/22 ,  H03K17/30 ,  H03K19/17736 ,  H03K19/17764

摘要： Power-on-reset circuitry is provided for integrated circuits such as programmable logic device integrated circuits. The power-on-reset circuitry may use comparator-based trip point voltage detectors to monitor power supply voltages. The trip point detectors may use circuitry to produce trip point voltages from a bandgap reference voltage. Controller logic may process signals from the trip point detectors to produce a corresponding power-on-reset signal. The power-on-reset circuitry may contain a noise filter that suppresses noise from power supply voltage spikes. Normal operation of the power-on-reset circuitry may be blocked during testing. The power-on-reset circuitry may be disabled when the bandgap reference voltage has not reached a desired level. The power-on-reset circuitry may be sensitive or insensitive to the power-up sequence used by the power supply signals. Brownout detection blocking circuitry may be provided to prevent the output from one of the trip point detectors from influencing the power-on-reset circuitry.

摘要翻译： 为诸如可编程逻辑器件集成电路的集成电路提供上电复位电路。 上电复位电路可以使用基于比较器的跳变点电压检测器来监视电源电压。 跳变点检测器可以使用电路从带隙参考电压产生跳变点电压。 控制器逻辑可以处理来自跳变点检测器的信号以产生相应的上电复位信号。 上电复位电路可以包含抑制电源电压尖峰噪声的噪声滤波器。 在测试期间可能会阻止上电复位电路的正常工作。 当带隙参考电压尚未达到所需的电平时，上电复位电路可能会被禁止。 上电复位电路可能对电源信号使用的上电顺序敏感或不敏感。 可以提供掉电检测阻塞电路以防止一个跳变点检测器的输出影响上电复位电路。

公开(公告)号：US08754680B2

公开(公告)日：2014-06-17

申请号：US13924153

申请日：2013-06-21

申请人： Altera Corporation

发明人： Ping Xiao ,  Weiyding Ding ,  Leo Min Maung

IPC分类号： H03L7/00

CPC分类号： H03L7/00 ,  G06F1/24 ,  H03K17/22 ,  H03K17/30 ,  H03K19/17736 ,  H03K19/17764

摘要： Power-on-reset circuitry is provided for integrated circuits such as programmable logic device integrated circuits. The power-on-reset circuitry may use comparator-based trip point voltage detectors to monitor power supply voltages. The trip point detectors may use circuitry to produce trip point voltages from a bandgap reference voltage. Controller logic may process signals from the trip point detectors to produce a corresponding power-on-reset signal. The power-on-reset circuitry may contain a noise filter that suppresses noise from power supply voltage spikes. Normal operation of the power-on-reset circuitry may be blocked during testing. The power-on-reset circuitry may be disabled when the bandgap reference voltage has not reached a desired level. The power-on-reset circuitry may be sensitive or insensitive to the power-up sequence used by the power supply signals. Brownout detection blocking circuitry may be provided to prevent the output from one of the trip point detectors from influencing the power-on-reset circuitry.

摘要翻译： 为诸如可编程逻辑器件集成电路的集成电路提供上电复位电路。 上电复位电路可以使用基于比较器的跳变点电压检测器来监视电源电压。 跳变点检测器可以使用电路从带隙参考电压产生跳变点电压。 控制器逻辑可以处理来自跳变点检测器的信号以产生相应的上电复位信号。 上电复位电路可以包含抑制电源电压尖峰噪声的噪声滤波器。 在测试期间可能会阻止上电复位电路的正常工作。 当带隙参考电压尚未达到所需的电平时，上电复位电路可能会被禁止。 上电复位电路可能对电源信号使用的上电顺序敏感或不敏感。 可以提供掉电检测阻塞电路以防止一个跳变点检测器的输出影响上电复位电路。