The TS128MLD64V4J is a 128Mx64bits Double Data Rate SDRAM high-density module for DDR400. It consists of 16 CMOS 64Mx8 bits Double Data Rate SDRAMs in 66 pin TSOP-II 400mil packages and a 2048 bits serial EEPROM on a 184-pin printed circuit board. The TS128MLD64V4J is a Dual In-Line Memory Module and is intended for mounting into 184-pin edge connector sockets.

Synchronous design allows precise cycle control with the use of the system clock. Data I/O transactions are possible on both edges of DQS. A range of operation frequencies and programmable latencies allow the same device to be useful for a variety of high bandwidth, high performance memory system applications.