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EDD2516AKTA-6BLI Datasheet(PDF) 1 Page - Elpida Memory |
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EDD2516AKTA-6BLI Datasheet(HTML) 1 Page - Elpida Memory |
1 / 49 page Document No. E0435E20 (Ver. 2.0) Date Published February 2004 (K) Japan URL: http://www.elpida.com ©Elpida Memory, Inc. 2003-2004 PRELIMINARY DATA SHEET 256M bits DDR SDRAM WTR (Wide Temperature Range) EDD2516AKTA-TI (16M words × 16 bits) EDD2516AKTA-LI (16M words × 16 bits) Description The EDD2516AK is a 256M bits Double Data Rate (DDR) SDRAM organized as 4,194,304 words × 16 bits × 4 banks. Read and write operations are performed at the cross points of the CK and the /CK. This high- speed data transfer is realized by the 2 bits prefetch- pipelined architecture. Data strobe (DQS) both for read and write are available for high speed and reliable data bus design. By setting extended mode register, the on-chip Delay Locked Loop (DLL) can be set enable or disable. It is packaged in standard 66-pin plastic TSOP (II). Features • Power supply : VDD, VDDQ = 2.5V ± 0.2V • Data rate: 333Mbps (max.) • Double Data Rate architecture; two data transfers per clock cycle • Bi-directional data strobe (DQS) transmitted /received with data, for capturing data at the receiver • Data inputs, outputs, and DM are synchronized with DQS • 4 internal banks for concurrent operation • 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 • Commands entered on each positive CK edge; data and data mask referenced to both edges of DQS • Data mask (DM) for write data • Auto precharge option for each burst access • SSTL_2 compatible I/O • Programmable burst length (BL): 2, 4, 8 • Programmable /CAS latency (CL): 2, 2.5 • Programmable output driver strength: normal/weak • Refresh cycles: 8192 refresh cycles/64ms ⎯ 7.8μs maximum average periodic refresh interval • 2 variations of refresh ⎯ Auto refresh ⎯ Self refresh • Ambient temperature range: −40 to +85°C Pin Configurations /xxx indicates active low signal. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 (Top view) VDD DQ0 VDDQ DQ1 DQ2 VSSQ DQ3 DQ4 VDDQ DQ5 DQ6 VSSQ DQ7 NC VDDQ LDQS NC VDD NC LDM /WE /CAS /RAS /CS NC BA0 BA1 A10(AP) A0 A1 A2 A3 VDD VSS DQ15 VSSQ DQ14 DQ13 VDDQ DQ12 DQ11 VSSQ DQ10 DQ9 VDDQ DQ8 NC VSSQ UDQS NC VREF VSS UDM /CK CK CKE NC A12 A11 A9 A8 A7 A6 A5 A4 VSS Address input Bank select address Data-input/output Input and output data strobe Chip select Row address strobe command Column address strobe command Write enable Input mask Clock input Differential clock input Clock enable Input reference voltage Power for internal circuit Ground for internal circuit Power for DQ circuit Ground for DQ circuit No connection A0 to A12 BA0, BA1 DQ0 to DQ15 UDQS/LDQS /CS /RAS /CAS /WE UDM/LDM CK /CK CKE VREF VDD VSS VDDQ VSSQ NC 66-pin Plastic TSOP(II) This product became EOL in April, 2007. |
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