GS82582D38GE Datasheet | GSI Technology

165-Bump BGA mercial Temp Industrial Temp GS82582D20/38GE-550/500/450/400 288Mb Sigma Quad-II+ Burst of 4 SRAM 550 MHz- 400 MHz 1.8 V VDD 1.8 V or 1.5 V I/O Features - 2.5 Clock Latency - Simultaneous Read and Write Sigma Quad™ Interface - JEDEC-standard pinout and package - Dual Double Data Rate interface - Byte Write controls sampled at data-in time - Burst of 4 Read and Write - On-Die Termination (ODT) on Data (D), Byte Write (BW), and Clock (K, K) intputs - 1.8 V +100/- 100 m V core power supply - 1.5 V or 1.8 V HSTL Interface - Pipelined read operation - Fully coherent read and write pipelines - ZQ pin for programmable output drive strength - Data Valid Pin (QVLD) Support - IEEE 1149.1 JTAG-pliant Boundary Scan - Ro HS-pliant 165-bump BGA package Sigma Quad™ Family Overview The GS82582D20/38GE are built in pliance with the Sigma Quad-II+ SRAM pinout standard for Separate I/O synchronous SRAMs. They are 301,989,888-bit (288Mb) SRAMs. The GS82582D20/38GE Sigma Quad SRAMs are just one element in a family of low power, low voltage HSTL I/O SRAMs designed to operate at the speeds needed to implement economical high performance networking systems. Clocking and Addressing Schemes The GS82582D20/38GE Sigma Quad-II+ SRAMs are synchronous devices. They employ two input register clock inputs, K and K. K and K are independent single-ended clock inputs, not differential inputs to a single differential clock input buffer. Each internal read and write operation in a Sigma Quad-II+ B4 RAM is four times wider than the device I/O bus. An input data bus de-multiplexer is used to accumulate ining data before it is simultaneously written to the memory array. An output data multiplexer is used to capture the data produced from a single memory array read and then route it to the appropriate output drivers as needed. Therefore the address field of a Sigma Quad-II+ B4 RAM is always two address pins less than the advertised index depth (e.g., the 16M x 18 has a 4M addressable...