At first,we point out that in the embedded system the power-on reset(POR)circuit of CPU and EPLD should not only satisfied the request of reset time but also offer correct time sequence to make POR step finished when initializing EPLD.

• 首先介绍了在嵌入式系统中,CPU和可编程芯片上电复位电路不仅要满足复位时间要求,而且还要有正确的时序,保证在对可编程芯片初始化时,该芯片上电复位已经结束。