关键词: 静态随机存储器, 物理不可克隆函数, 上下电控制

Abstract: Physically unclonable function (PUF) of static random access memory (SRAM) is commonly used in the industry to generate system security keys through the inherent physical characteristics of the on-chip SRAM power-up initial state. However, in the case that the system cannot be sufficiently powered down, the on-chip integrated SRAM maintains the state before the last power down after being powered up and cannot generate the inherent physical characteristic key. A power control circuit is proposed to ensure the physical characteristics of the on-chip SRAM power-up initial state by ensuring that the SRAM cell is fully powered down when the system cannot be fully powered down.

Key words: SRAM, physically unclonable function, power onand off control