ОК. Значит, K6R1016V1D или K6R4016V1D http://www.caxapa.ru/search?find=k6r40
K6R4016V1D - 256Kx16 Bit High Speed Static RAM(3.3V Operating). K6R4016V1D-J : 44-SOJ-400
K6R4016V1D-K : 44-SOJ-400(Lead-Free)
K6R4016V1D-T : 44-TSOP2-400BF
K6R4016V1D-U : 44-TSOP2-400BF (Lead-Free)
K6R4016V1D-E : 48-TBGA with 0.75 Ball pitch
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http://www.caxapa.ru/search?find=k6r10
K6R1016V1D - 64Kx16 Bit High-Speed CMOS Static RAM(3.3V Operating)
K6R1016V1D-J: 44-SOJ-400
K6R1016V1D-K: 44-SOJ-400 (Lead-Free)
K6R1016V1D-T: 44-TSOP2-400BF
K6R1016V1D-U: 44-TSOP2-400BF (Lead-Free)
K6R1016V1D-E: 48-TBGA ( 6.0mm X 7.0mm ) with 0.75mm ball pitch