'97.4.7 MITSUBISHI LSIs M5M5256DP,FP,VP,RV -45LL.
M5M5256RV-55LL - 262144-BIT (32768-WORD BY 8-BIT) CMOS STATIC RAM
M5M5256RV-55LL-I - 262144-BIT (32768-WORD BY 8-BIT) CMOS STATIC RAM
M5M5256RV-55LL-W - 262144-BIT (32768-WORD BY 8-BIT) CMOS STATIC RAM