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HB54R1G9F2-B75B Datasheet, PDF (1/16 Pages) Elpida Memory – 1GB Registered DDR SDRAM DIMM
DATA SHEET
1GB Registered DDR SDRAM DIMM
HB54R1G9F2-B75B/10B (128M words × 72 bits, 2 Ranks) Description
The HB54R1G9F2 is a 128M × 72 × 2 rank Double
Data Rate (DDR) SDRAM Module, mounting 36 pieces
of 256Mbits DDR SDRAM sealed in TCP package, 1
piece of PLL clock driver, 2 pieces of register driver
Eand 1 piece of serial EEPROM (2k bits EEPROM) for
Presence Detect (PD). 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-bit
Oprefetch-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. An outline of the products is
184-pin socket type package (dual lead out).
L Therefore, it makes high density mounting possible
without surface mount technology. It provides common
data inputs and outputs. Decoupling capacitors are
mounted beside each TCP on the module board.
Note: Do not push the cover or drop the modules in
P order to protect from mechanical defects, which
roduct would be electrical defects.
Features
• 184-pin socket type package (dual lead out)
 Outline: 133.35mm (Length) × 43.18mm (Height) ×
4.80mm (Thickness)
 Lead pitch: 1.27mm
• 2.5V power supply (VCC/VCCQ)
• SSTL-2 interface for all inputs and outputs
• Clock frequency: 133MHz/125MHz (max.)
• Data inputs and outputs are synchronized with DQS
• 4 banks can operate simultaneously and
independently (Component)
• Burst read/write operation
• Programmable burst length: 2, 4, 8
 Burst read stop capability
• Programmable burst sequence
 Sequential
 Interleave
• Start addressing capability
 Even and Odd
• Programmable /CAS latency (CL): 3, 3.5
• 8192 refresh cycles: 7.8µs (8192/64ms)
• 2 variations of refresh
 Auto refresh
 Self refresh
Document No. E0089H50 (Ver. 5.0) This product became EOL in May, 2004.
Date Published March 2003 (K) Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2001-2003
Hitachi, Ltd. 2000
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.