MC-4R128FKK8K Datasheet, PDF (1/13 Pages) Elpida Memory – 128MB 32-bit Direct Rambus DRAM RIMM Module

PRELIMINARY DATA SHEET
128MB 32-bit Direct Rambus DRAM RIMM Module
MC-4R128FKK8K (32M words × 18 bits × 2 channels)
Description
The 32-bit Direct Rambus RIMM module is a general-
purpose high-performance lines of memory modules
suitable for use in a broad range of applications
including computer memory, personal computers,
workstations, and other applications where high
bandwidth and latency are required.
The 32-bit RIMM module consists of 288Mb Direct
Rambus DRAM (Direct RDRAM) devices. These are
extremely high-speed CMOS DRAMs organized as
16M words by 18 bits. The use of Rambus Signaling
Level (RSL) technology permits the use of conventional
system and board design technologies. The 32-bit
RIMM modules support 800MHz transfer rate per pin,
resulting in total module bandwidth of 3.2GB/s.
Features
• 128MB Direct RDRAM storage and 128 banks total
on module
• 2 independent Direct RDRAM channels, 1 pass
through and 1 terminated on 32-bit RIMM module
• High speed 800MHz Direct RDRAM devices
• 232 edge connector pads with 1mm pad spacing
 Module PCB size: 133.35mm × 39.925mm ×
1.27mm
 Gold plated edge connector pads contacts
• Serial Presence Detect (SPD) support
• Operates from a 2.5V (±5%) supply
• Low power and power down self refresh modes
• Separate Row and Column buses for higher
efficiency
The 32-bit RIMM module provides two independent 18
bit memory channels to facilitate compact system
design. The "Thru" Channel enters and exits the
module to support a connection to or from a controller,
memory slot, or termination. The "Term" Channel is
terminated on the module and supports a connection
from a controller or another memory slot.
The RDRAM^ architecture enables the highest
sustained bandwidth for multiple, simultaneous,
randomly addressed memory transactions. The
separate control and data buses with independent row
and column control yield over 95% bus efficiency. The
RDRAM device multi-bank architecture supports up to
four simultaneous transactions per device.
Document No. E0252N10 (Ver. 1.0)
Date Published April 2002 (K) Japan
URL: http://www.elpida.com
Elpida Memory, Inc. 2002
Elpida Memory, Inc. is a joint venture DRAM company of NEC Corporation and Hitachi, Ltd.