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This paper analyzes the spatial radiation effects and wide temperature reliability that phase change memory should be considered in spacecraft, and a series of experiments are designed to evaluate its space application on LPDDR2-PCM MT66R7072, a low power phase change memory chip was developed by Micron in 2012. The experimental results show that the phase change memory chip can realize the read and write operation normally in the range of -40 ℃ ~ 80 ℃. At 25 ℃, the standby power consumption is 9.792mW and the maximum working power is 36.474mW. Comparing to existing spatial memory, that phase change memory shows significant advantages of low cost, low power consumption and high reliability.