关键词: 电可擦除可编程存储器, 纠错码, 串行外设接口

Abstract: To solve the problem of bit-flipping of data resulting from the limitation of the process structure of electrically erasable programmable read only memory (EEPROM), an error correction check (ECC) checking system based on Hamming code is designed. Taking the structural characteristics and data storage of EEPROM into consideration, the system is divided into ECC calculation module and check and correction module which can achieve 1 bit/32 bit error correction capability by generating 6 bits of ECC code from per 32 bits of original data. This ECC checking system is designed and implemented by using Verilog HDL, which is applied to an EEPROM memory compatible with serial peripheral interface (SPI). The simulation result indicates that this ECC checking system can not only ensure the accuracy of transform, but also enhance the reliability of memory system.

Key words: electrically erasable programmable read only memory, error correction check, serial peripheral interface