EM428M1644RTA - Eorex

EM428M1644RTA Double DATA RATE SDRAM

The EM428M1644RTA is high speed Synchronous graphic RAM fabricated with ultra high performance CMOS process containing 134,217,728 bits which organized as 2Meg words x 4 banks by 16 bits. The 128Mb DDR SDRAM uses a double data rate architecture to accomplish high-speed operation. The data path internally prefetches multiple bits and It transfers the datafor .

Features

• Internal Double-Date-Rate architecture with 2 Accesses per clock cycle.
• VDD/VDDQ= 2.5V ±0.2V for (-75 and -6)
• VDD/VDDQ= 2.6V ±0.1V for (-5 )
• 2.5V SSTL-2 compatible I/O
• Burst Length (B/L) of 2, 4, 8
• 2,2.5,3 Clock read latency
• Bi-directional,intermittent data strobe(DQS)
• All inputs except data and DM are sampled at the positive edge of the system clock.
• Data Mask (DM) for write data
• Sequential & Interleaved Burst type available
• Auto Precharge option for each burst accesses
• DQS edge-aligned with data for Read cycles
• DQS center-aligned with data for Write cycles
• DLL ali.