公开(公告)号：US20150155854A1

公开(公告)日：2015-06-04

申请号：US14547997

申请日：2014-11-19

Applicant: RENESAS ELECTRONICS CORPORATION

Inventor： Keiichi HAYASAKA ,  Toyohiko YOSHIDA ,  Akira OIZUMI ,  Yoshinori TOKIOKA

IPC: H03K3/012 ,  H03K3/037

CPC classification number: H03K19/0008 ,  G06F1/24 ,  G06F1/30

Abstract: There is a need to provide a technology that shortens a time period from a point to start an external power supply for a microcontroller to a point to start operating a logic circuit. A stable voltage supply circuit of a semiconductor circuit accepts an external power supply VCC and supplies a VDD line with one of a power supply voltage to cause a stable output voltage and a power supply voltage to cause an unstable output voltage and fast start. At startup, the semiconductor circuit accepts an external power supply. The semiconductor circuit raises a power supply voltage to cause a stable output voltage and supplies a logic portion initialization circuit with an unstable power supply voltage to fast start, and initializes a VDD operation circuit. When the output voltage is stabilized, the semiconductor circuit changes a power supply voltage supplied to the VDD line and starts operating the VDD operation circuit.

Abstract translation: 需要提供一种技术，其缩短从微控制器的外部电源点开始运行逻辑电路的时间点。 半导体电路的稳定电压供给电路接受外部电源VCC，并且向VDD线提供电源电压中的一个，以产生稳定的输出电压和电源电压，从而导致不稳定的输出电压并快速启动。 在启动时，半导体电路接受外部电源。 半导体电路提高电源电压以产生稳定的输出电压，并向具有不稳定电源电压的逻辑部分初始化电路提供快速启动，并初始化VDD操作电路。 当输出电压稳定时，半导体电路改变提供给VDD线的电源电压，并开始运行VDD运行电路。