Integration of information security chips based on System-in-Package

A bottleneck problem exists in the information security chips, that it´s hard to integrate the logic chips or blocks with the memory together. System-in-Package (SiP) is a technology that combining multiple actives and passives electronic components, assembled in a single unit that provides multiple functions associated with a system. In this paper, the concept “integration of information security chips based on SiP” is proposed, in order to solve the bottleneck problem above, and bring better performance on high-quality, lower-power consumption and high-reliability. The detailed development flow for “integration of information security chips based on SiP” is put forward, and some key issues like the verification methods are also expounded. According to this flow, a product of SiP integrating a CPU, a flash memory and a RSA cryptographic chip is designed. The function and properties of the product satisfy the requirement, thus certificating the feasibility of this development flow. And the SiP technology conforms to the trends of small-sized and high-dependability for information security device.