![](http://datasheet.mmic.net.cn/180000/MT16VR12816AG-845B1_datasheet_11334029/MT16VR12816AG-845B1_2.png)
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32, 48, 64, 128 Meg x 16/18 Rambus RIMM Modules
Micron Technology, Inc., reserves the right to change products or specifications without notice.
RM01.p65 – Rev. 9/99
1999, Micron Technology, Inc.
32, 48, 64, 128 MEG x 16/18
RAMBUS RIMM MODULES
ADVANCE
GENERAL DESCRIPTION
The MT4VR3216/18A, MT6VR4816/18A, MT8VR6416/
18A and MT16VR12816/18A RDRAM RIMM modules are
general-purpose, high-performance, packet-oriented, dy-
namicrandom-accessmemoriesconfiguredas64MB/72MB,
96MB/108MB, 128/144MB and 256MB/288MB densities.
The RIMM modules consist of 4, 6, 8, or 16 Direct RDRAM
devices organized as 8M words by 16 or 18 bits.
The RIMM modules use Rambus signaling level (RSL)
technology to achieve 356 MHz or 400 MHz clock speeds
using differential clocks. Control and I/O data is trans-
ferred on both the rising and falling edges of the clock. This
allows data transfers at 1.25ns per two bytes (10ns per 16
bytes) during peak operation.
All DRAM commands are communicated to the RIMM
modules through a 3-bit row or 5-bit column bus inpackets
which are 8 bits in length. These packets are then decoded
on the RDRAM into the operation and address requiring
access.
Initialization and mode configurations for the RIMM
modules are accessed through slow speed CMOS Serial I/
O interface.
The architecture of Direct RDRAMs allows high sus-
tained bandwidth memory transactions for multiple, si-
multaneous, semi-random addresses. Each Direct RDRAM’s
thirty-two banks can support up to four simultaneous
transactions (within bank restrictions).
System-oriented features include power management,
byte masking and x16/18 organization. The two data bits in
the x18 organization are general and can be used for addi-
tional storage, bandwidth, or for error correction.
PART NUMBERS
PART NUMBER
CONFIGURATION CLK FREQ. ACCESS
(MHz)
TIME (ns)
MT4VR3216AG-750__
32 Meg x 16
356
50
MT4VR3216AG-745__
32 Meg x 16
356
45
MT4VR3216AG-850__
32 Meg x 16
400
50
MT4VR3216AG-845__
32 Meg x 16
400
45
MT4VR3216AG-840__
32 Meg x 16
400
40
MT4VR3218AG-750__
32 Meg x 18
356
50
MT4VR3218AG-745__
32 Meg x 18
356
45
MT4VR3218AG-850__
32 Meg x 18
400
50
MT4VR3218AG-845__
32 Meg x 18
400
45
MT4VR3218AG-840__
32 Meg x 18
400
40
MT6VR4816AG-750__
48 Meg x 16
356
50
MT6VR4816AG-745__
48 Meg x 16
356
45
MT6VR4816AG-850__
48 Meg x 16
400
50
MT6VR4816AG-845__
48 Meg x 16
400
45
MT6VR4816AG-840__
48 Meg x 16
400
40
MT6VR4818AG-750__
48 Meg x 18
356
50
MT6VR4818AG-745__
48 Meg x 18
356
45
MT6VR4818AG-850__
48 Meg x 18
400
50
MT6VR4818AG-845__
48 Meg x 18
400
45
MT6VR4818AG-840__
48 Meg x 18
400
40
MT8VR6416AG-750__
64 Meg x 16
356
50
MT8VR6416AG-745__
64 Meg x 16
356
45
MT8VR6416AG-850__
64 Meg x 16
400
50
MT8VR6416AG-845__
64 Meg x 16
400
45
MT8VR6416AG-840__
64 Meg x 16
400
40
MT8VR6418AG-750__
64 Meg x 18
356
50
MT8VR6418AG-745__
64 Meg x 18
356
45
MT8VR6418AG-850__
64 Meg x 18
400
50
MT8VR6418AG-845__
64 Meg x 18
400
45
MT8VR6418AG-840__
64 Meg x 18
400
40
MT16VR12816AG-750__
128 Meg x 16
356
50
MT16VR12816AG-745__
128 Meg x 16
356
45
MT16VR12816AG-850__
128 Meg x 16
400
50
MT16VR12816AG-845__
128 Meg x 16
400
45
MT16VR12816AG-840__
128 Meg x 16
400
40
MT16VR12818AG-750__
128 Meg x 18
356
50
MT16VR12818AG-745__
128 Meg x 18
356
45
MT16VR12818AG-850__
128 Meg x 18
400
50
MT16VR12818AG-845__
128 Meg x 18
400
45
MT16VR12818AG-840__
128 Meg x 18
400
40
NOTE: All part numbers end with a two-place code (not shown),
designating component and PCB revisions. Consult
factory for current revision codes. Example:
MT8VR6416AG-750B1