Several methods to extend the longevity of EEPROM s R/W times and a special storage arithmetic of auto mileage data are introduced in this paper.

• 介绍几种延长EEPROM寿命的写入算法和一种汽车里程数据的存储算法,突破了EEPROM的擦写次数限制和传统算法的精度限制,实现了汽车里程数据10m的保存精度,并经过了上车试验正常运行。