EDJ2104EDBG Datasheet, PDF (1/150 Pages) Elpida Memory – ZQ calibration for DQ drive and ODT

DATA SHEET
2G bits DDR3L SDRAM
EDJ2104EDBG (512M words × 4 bits)
EDJ2108EDBG (256M words × 8 bits)
Specifications
Features
• Density: 2G bits
• Organization
 64M words × 4 bits × 8 banks (EDJ2104EDBG)
 32M words × 8 bits × 8 banks (EDJ2108EDBG)
• Package
 78-ball FBGA
 Lead-free (RoHS compliant) and Halogen-free
• Power supply: 1.35V (typ.)
 VDD, VDDQ = 1.283V to 1.45V
 Backward compatible for VDD, VDDQ
= 1.5V ± 0.075V
• Data rate
 1600Mbps/1333Mbps/1066Mbps (max.)
• 1KB page size
 Row address: A0 to A14
 Column address: A0 to A9, A11 (EDJ2104EDBG)
A0 to A9 (EDJ2108EDBG)
• Eight internal banks for concurrent operation
• Burst lengths (BL): 8 and 4 with Burst Chop (BC)
• Burst type (BT):
 Sequential (8, 4 with BC)
 Interleave (8, 4 with BC)
• /CAS Latency (CL): 5, 6, 7, 8, 9, 10, 11
• /CAS Write Latency (CWL): 5, 6, 7, 8
• Precharge: auto precharge option for each burst
access
• Driver strength: RZQ/7, RZQ/6 (RZQ = 240Ω)
• Refresh: auto-refresh, self-refresh
• Refresh cycles
 Average refresh period
7.8µs at 0°C ≤ TC ≤ +85°C
3.9µs at +85°C < TC ≤ +95°C
• Operating case temperature range
 TC = 0°C to +95°C
• 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 programmable additive latency for
better command and data bus efficiency
• On-Die Termination (ODT) for better signal quality
 Synchronous ODT
 Dynamic ODT
 Asynchronous ODT
• Multi Purpose Register (MPR) for pre-defined pattern
read out
• ZQ calibration for DQ drive and ODT
• Programmable Partial Array Self-Refresh (PASR)
• /RESET pin for Power-up sequence and reset
function
• SRT range:
 Normal/extended
• Programmable Output driver impedance control
Document No. E1797E41 (Ver. 4.1)
Date Published February 2012 (K) Japan
Printed in Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2011-2012