AS4C256M16D3LB-12BAN - Alliance Semiconductor

AS4C256M16D3LB-12BAN 4Gb DRAM

Pin CK, CK CKE CS ODT RAS, CAS, WE DM (DMU), (DML) Type Input Input Input Input Input Input Function Clock : CK and CK are differential clock inputs. All address and control input signals are sampled on the crossing of the positive edge of CK and negative edge of CK. Output (read) data is referenced to the crossings of CK and CK Clock Enable : CKE HIGH ac.

Features

- Double-data-rate architecture; two data transfers per clock cycle - The high-speed data transfer is realized by the 8 bits prefetch pipelined architecture - Bi-directional differential data strobe (DQS and DQS) is transmitted/received with data for capturing data at the receiver - DQS is edge-aligned with data for READs; center-aligned with data for WRITEs - Differential clock inputs (CK and CK) - DLL aligns DQ and DQS transitions with CK transitions - Commands entered on each positive CK edge; data and data mask referenced to both edges of DQS - Data mask (DM) for write data - Posted CAS by.