公开(公告)号：US5087915A

公开(公告)日：1992-02-11

申请号：US459531

申请日：1990-01-02

申请人： Tatsuro Toya

发明人： Tatsuro Toya

IPC分类号： H03M1/12 ,  G06F3/05

CPC分类号： G06F3/05

摘要： A single-chip microcomputer is comprised of an analog to digital converter, a first external terminal which receives an analog signal which is to be converted by the analog to digital converter, and a second external terminal for receiving a signal indicating an operating condition of the analog to digital converter.

摘要翻译： 单片微型计算机由模拟数字转换器构成，第一外部端子接收要由模数转换器转换的模拟信号，第二外部端子用于接收指示信号的操作状态的信号 模数转换器。

公开(公告)号：US4881201A

公开(公告)日：1989-11-14

申请号：US78764

申请日：1987-07-28

申请人： Nobuyuki Sato ,  Kazuaki Ujiie ,  Masaaki Terasawa ,  Shinji Nabetani

发明人： Nobuyuki Sato ,  Kazuaki Ujiie ,  Masaaki Terasawa ,  Shinji Nabetani

IPC分类号： G11C17/00 ,  G11C16/02 ,  G11C16/06 ,  G11C16/20 ,  G11C16/22 ,  G11C16/30 ,  H01L21/8246 ,  H01L21/8247 ,  H01L27/10 ,  H01L27/112 ,  H01L29/788 ,  H01L29/792

CPC分类号： G11C16/225 ,  G11C16/20 ,  G11C16/30

摘要： A semiconductor integrated circuit device includes a semiconductor nonvolatile memory, a booster circuit which generates a high voltage required for writing the data into said semiconductor nonvolatile memory, and a control circuit. With the thus constructed device, however, various external control signals often fail to assume definite levels when the power source is closed. If an operation mode to be designated is erroneously determined to be a write operation mode due to obscure levels of the external control signals, then the write operation is executed erroneously. To prevent such an eronneous operation from developing when the power source is closed, provision is made of a power souce closure detector circuit and a suitable gate circuit. Owing to these circuits, the output of the booster circuit is prevented from being applied to the memory element from the time from when the power source circuit is closed up to the time when the read operation mode is designated by an external control signal.

摘要翻译： 半导体集成电路器件包括半导体非易失性存储器，产生将数据写入所述半导体非易失性存储器所需的高电压的升压电路以及控制电路。 然而，利用如此构造的装置，当电源关闭时，各种外部控制信号通常不能承担确定的电平。 如果由于外部控制信号的不清楚而将指定的操作模式错误地确定为写入操作模式，则写入操作被错误地执行。 为了防止在电源关闭时发生这种恶意操作，请提供电源闭合检测器电路和合适的门电路。 由于这些电路，从电源电路闭合直到由外部控制信号指定读取操作模式的时间，防止升压电路的输出被施加到存储元件。