针对在发控设备的执控组合PC104计算机系统中使用多接口模块平铺设计技术时,计算机化标准数据(computerized standard data,CSD)串口板卡偶发性出现上电复位异常问题,设计了一种CSD串口板卡上电复位的滤波算法,增加硬件复位信号检测电...针对在发控设备的执控组合PC104计算机系统中使用多接口模块平铺设计技术时,计算机化标准数据(computerized standard data,CSD)串口板卡偶发性出现上电复位异常问题,设计了一种CSD串口板卡上电复位的滤波算法,增加硬件复位信号检测电路并进行了仿真和试验。仿真和试验结果表明,所采用的软件滤波算法和硬件电路设计能杜绝上电复位异常现象的发生,提高了发控设备串口通信的可靠性。展开更多
An on-chip power-on reset circuit with a brown-out detection capability is implemented in a 0. 18 μm CMOS. A pF-order capacitor is charged with a proportional-to-absolute-temperature （PTAT） current from a bandgap r...An on-chip power-on reset circuit with a brown-out detection capability is implemented in a 0. 18 μm CMOS. A pF-order capacitor is charged with a proportional-to-absolute-temperature （PTAT） current from a bandgap reference with limited loop bandwidth and slow start-up feature, to generate a reset signal with high robustness and wide-range supply rise time. An embedded brown- out detector based on complementary voltage-to-current （V-to-I） conversion and current comparison can accurately respond to the brown-out event with high robustness over process and temperature when the supply is lower than 1.5 V and the brown-out duration is longer than 0. 1 ms. The presented design with embedded offset voltage cancellation consumes a quiescent current of 8. 5 μA from a 1. 8 V supply and works over ambient temperature of -40° to 120°.展开更多
文摘针对在发控设备的执控组合PC104计算机系统中使用多接口模块平铺设计技术时,计算机化标准数据(computerized standard data,CSD)串口板卡偶发性出现上电复位异常问题,设计了一种CSD串口板卡上电复位的滤波算法,增加硬件复位信号检测电路并进行了仿真和试验。仿真和试验结果表明,所采用的软件滤波算法和硬件电路设计能杜绝上电复位异常现象的发生,提高了发控设备串口通信的可靠性。
基金Supported by the National Natural Science Foundation of China(6130603761201182)
文摘An on-chip power-on reset circuit with a brown-out detection capability is implemented in a 0. 18 μm CMOS. A pF-order capacitor is charged with a proportional-to-absolute-temperature （PTAT） current from a bandgap reference with limited loop bandwidth and slow start-up feature, to generate a reset signal with high robustness and wide-range supply rise time. An embedded brown- out detector based on complementary voltage-to-current （V-to-I） conversion and current comparison can accurately respond to the brown-out event with high robustness over process and temperature when the supply is lower than 1.5 V and the brown-out duration is longer than 0. 1 ms. The presented design with embedded offset voltage cancellation consumes a quiescent current of 8. 5 μA from a 1. 8 V supply and works over ambient temperature of -40° to 120°.
