Yes. In case of a software reset like WD reset, BOD reset etc, the SRAM contents (memory address 0x1000 0000 to 0x1000 2000 in case of LPC1227 ) is retained. However, the part won't retain the contents if it goes to deep power-down mode or if the microcontrollers is unpowered.
#1Submitted by PEICHUN on Wed, 2014-09-17 01:23.
Ｉ ｔｅｓｔ ｔｈｅ ＬＰＣ１２２５ＦＢＤ４８／３２１，ａｆｔｅｒ ａ ＷＤ ｒｅｓｅｔ ａｌｌ ｔｈｅ ＳＲＡＭ ｄａｔａ ｉｓ ０，ｗｈｙ？ｔｈｅ ａｄｄｒｅｓｓ ｉｓ ０ｘ１０００ ０２００， Ｉ ｔｅｓｔ ｉｔ ｉｎ ＫＥＩＬ．