Extended EDAC check circuit and read-write method for extended Flash program storage area

A technology for verifying circuits and program storage, which is applied in static memory, electrical digital data processing, and input/output process of data processing, etc., can solve problems such as inability to realize EDAC functions, achieve improved anti-single event flipping ability, good economical Benefits and social benefits, the effect of improving product space environmental adaptability
CN111679933AActive Publication Date: 2020-09-18XIAN MICROELECTRONICS TECH INST
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN MICROELECTRONICS TECH INST
Publication Date
2020-09-18

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Abstract

The invention discloses an extended EDAC check circuit and a read-write method for an extended Flash program storage area. A bus driver, an AND gate, an OR gate and a NOT gate are added between a processor interface and an extended FLASH and used for achieving read-write operation of the extended FLASH2. A data line D [0:7] and a check bit PD [0:7] are connected with a data line of a FLASH throughthe bus driver, and in order to prevent data line conflicts, an OE enabling end of the bus driver is controlled to be gated through GPIO5, GPIO6 and AND gate, OR gate and NOT gate combinational logic; the extended EDAC check circuit and the read-write method can be applied to the FLASH external expansion EDAC function in the space computer miniaturized SIP module; the function can effectively improve the single event upset resistance of the FLASH as a program storage area space; on the premise that the function performance of the whole machine is met, the single event upset resistance of theFLASH serving as a program storage area in the space environment is greatly improved, the reliability of the whole machine is improved, and the requirements for standardization, miniaturization and localization of space computer design are met.
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Description

technical field

[0001] The invention belongs to the application field of space embedded computers, and in particular relates to an externally expanded Flash program storage area expanded EDAC verification circuit and a reading and writing method. Background technique

[0002] Miniaturization is the development trend of space embedded computers. At present, the processor system and functional modules in the computer are built with discrete components, which are large in size and heavy in weight. The development and application of SIP technology provides technical support for the miniaturization design of space embedded computer. The SIP module LSCCU01RH, which has been applied and successfully flown on the space computer, has greatly reduced the size, weight, and power consumption of the computer, and the module works stably, performs well, and has mature technology.

[0003] The SIP module LSCCU01RH integrates resources such as CPU, SRAM, FLASH, and interface circuits, that...

Claims

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