SDRAM 512Mb B-die (x4, x8, x16) CMOS SDRAM 512Mb.
K4S510432B-TC75 - 512Mb B-die SDRAM Specification
K4S510432B-TC - 512Mb B-die SDRAM Specification
K4S510432B-TCL75 - 512Mb B-die SDRAM Specification