V58C2256404SC Datasheet | ProMOS Technologies

Features - High speed data transfer rates with system frequency up to 200 MHz - Data Mask for Write Control - Four Banks controlled by BA0 & BA1 - Programmable CAS Latency: 2, 2.5, 3 - Programmable Wrap Sequence: Sequential or Interleave - Programmable Burst Length: 2, 4, 8 for Sequential Type 2, 4, 8 for Interleave Type - Automatic and Controlled Precharge mand - Power Down Mode - Auto Refresh and Self Refresh - Refresh Interval: 8192 cycles/64 ms - Available in 66-pin 400 mil TSOP or 60 Ball FBGA - SSTL-2 patible I/Os - Double Data Rate (DDR) - Bidirectional Data Strobe (DQS) for input and output data, active on both edges - On-Chip DLL aligns DQ and DQs transitions with CK transitions - Differential clock inputs CK and CK - Power Supply 2.5V ± 0.2V - Power Supply 2.6V ± 0.1V for DDR400 - t RAS lockout supported - Concurrent auto precharge option is supported - Industrial Temperature (TA): -40C to +85C - Note: (-5B) Supports PC3200 module with 2.5-3-3 timing (-5) Supports PC3200 module with 3-3-3 timing (-6) Supports PC2700 module with 2.5-3-3 timing (-7) Supports PC2100 module with 2-2-2 timing Description The V58C2256(804/404/164)SC- I is a four bank DDR DRAM organized as 4 banks x 8Mbit x 8 (804), 4 banks x 4Mbit x 16 (164), or 4 banks x 16Mbit x 4 (404). The V58C2256(804/404/164)SC- I achieves high speed data transfer rates by employing a chip architecture that prefetches multiple bits and then synchronizes the output data to a system clock. All of the control, address, circuits are synchronized with the positive edge of an externally supplied clock. I/O transactions are occurring on both edges of DQS. Operating the four memory banks in an interleaved fashion allows random access operation to occur at a higher rate than is possible with standard DRAMs. A sequential and gapless data rate is possible depending on burst length, CAS latency and speed grade of the device. Device Usage Chart Operating Temperature Range -40°C to +85°C Package Outline JEDEC 66 TSOP II...