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    • 3. 发明授权
    • Voltage programming switch for one-time-programmable (OTP) memories
    • 用于一次可编程(OTP)存储器的电压编程开关
    • US07626845B2
    • 2009-12-01
    • US11610284
    • 2006-12-13
    • Clinton H. Holder, Jr.Kang W. LeeJoseph E. SimkoYehuda SmoohaYing Zhu
    • Clinton H. Holder, Jr.Kang W. LeeJoseph E. SimkoYehuda SmoohaYing Zhu
    • G11C17/00
    • G11C17/16G11C17/18
    • In one embodiment, the invention is an integrated circuit (IC) including an OTP memory and conditioning circuitry. The IC receives an externally-generated DC programming voltage signal that the conditioning circuitry transforms into a programming pulse signal for programming the OTP memory. The conditioning circuitry includes: (i) reset protection circuitry for holding the programming pulse signal low if the IC is powering up, (ii) an overvoltage protection circuit for substantially preventing the programming pulse voltage from exceeding predefined boundaries, and (iii) a conversion switch for controlling the programming pulse voltage. The programming pulse voltage is (i) substantially equivalent to the externally-generated DC voltage if an enable signal is on, and (ii) substantially equivalent to a reference voltage if the enable signal is off.
    • 在一个实施例中,本发明是包括OTP存储器和调节电路的集成电路(IC)。 IC接收外部产生的直流编程电压信号,调理电路变换为用于编程OTP存储器的编程脉冲信号。 调节电路包括:(i)复位保护电路,用于在IC上电时保持编程脉冲信号为低电平,(ii)过压保护电路,用于基本上防止编程脉冲电压超出预定义的边界,以及(iii)转换 用于控制编程脉冲电压的开关。 如果使能信号为开,编程脉冲电压为(i)基本上等于外部产生的直流电压,以及(ii)如果使能信号关闭,则基本上等于参考电压。