Invention Grant
US08934279B2 Stack processor using a ferroelectric random access memory (F-RAM) for code space and a portion of the stack memory space
有权
堆栈处理器使用铁电随机存取存储器(F-RAM)作为代码空间和堆栈存储空间的一部分
- Patent Title: Stack processor using a ferroelectric random access memory (F-RAM) for code space and a portion of the stack memory space
- Patent Title (中): 堆栈处理器使用铁电随机存取存储器(F-RAM)作为代码空间和堆栈存储空间的一部分
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Application No.: US13467849Application Date: 2012-05-09
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Publication No.: US08934279B2Publication Date: 2015-01-13
- Inventor: Franck Fillere
- Applicant: Franck Fillere
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: G11C11/22
- IPC: G11C11/22 ; C12Q1/68 ; G06F9/30

Abstract:
A stack processor using a ferroelectric random access memory (F-RAM) for code space and a portion of the stack memory space. By storing some of the associated stacks in complementary metal oxide semiconductor (CMOS) or other volatile memory, read/write operations to only F-RAM would be obviated. As compared to an all F-RAM stack implementation, a faster, less power consuming and faster program execution time is provided. Firmware code can also be provided that will tend to concentrate the more intensive calculations to that part of the stack that is in volatile memory and minimize POP/PUSH operations to the F-RAM portion of the stack. Moreover, since only the top of the stack is maintained in volatile memory, most of it remains in F-RAM which means the application can still benefit from the high F-RAM endurance and shorter power-down times.
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