Taiwan Semiconductor Manufacturing Comp. Ltd.

TSMC China Company Limited

Ming-En Bu

He-Zhou Wan

Ching-Wei Wu

XiuLi Yang

Mengxiang Xu

Zong-Liang Cao

Xiu-Li Yang

A circuit includes a power management circuit configured to receive at least a first or a second control signal, and to supply at least a first, second or a third supply voltage. The first control signal has a first voltage swing. The second control signal has a second voltage swing. The power management circuit includes a first level shifter circuit configured to generate a first level shifted signal in response to the first control signal, and a first header circuit coupled to at least the first level shifter circuit, a first voltage supply and a second voltage supply. The first header circuit is configured to supply the first supply voltage of the first voltage supply to the first node in response to the first control signal, and to supply the second supply voltage of the second voltage supply to the second node in response to the first level shifted signal.

Circuit and method of operating the same

A device includes a first virtual power line coupled to a power supply through a first group of transistor switches, and a second virtual power line configured to receive the power supply through a second group of transistor switches. The device also includes a delay circuit coupled between the gate terminals of the first group of transistor switches and the gate terminals in the second group of transistor switches. The device further includes a wakeup detector and a plurality of main input-output (MIO) controllers. The wakeup detector is configured to generate a trigger signal after receiving a signal from the output of the delay circuit. The plurality of MIO controllers is coupled to the power supply through a group of wakeup switches and through a group of function switches. The gate terminals in the group of wakeup switches are configured to receive the trigger signal.

System and method of power management in memory design

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Hsinchu, Taiwan

Ming-En Bu