Configuration of default voltage level for dual-voltage input/output pad cell via voltage rail ramp up timing

• Main Authors: ROBERT THOMAS GREENWOOD, PAUL M HERBST, HAKU SATO
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

An integrated circuit (IC) package of an electronic device includes a first input coupled to a first voltage rail and a second input coupled to a second voltage rail. The IC package further includes aset of one or more input/output (IO) pad cells and a power sequence detector coupled to the first and second voltage rails. The power sequence detector monitors the first and second voltage rails andconfigures the set of one or more IO pad cells to operate at one of a non-zero first voltage level or a non-zero second voltage level depending on which of the first voltage rail and the second voltage rail ramps up to a corresponding specified voltage level first. 电子装置的集成电路(IC)封装包括耦合到第电压轨的第输入以及耦合到第二电压轨的第二输入。所述IC封装另外包括组个或多个输入/输出(IO)垫单元以及耦合到所述第和第二电压轨的电力序列检测器。所述电力序列检测器监测所述第和第二电压轨，且配置所述组个或多个IO垫单元以取决于所述第电压轨和所述第二电压轨中的哪个电压轨首先斜升到对应指定电压电平而在非零第电压电平或非零第二电压电平中的个电压电平下操作。