Discontinuted (9/98 - last order; 3/99 last ship)
IBM11D4320B4M
x 3211/11, 5.0V, Sn/PbMMDS13DSU-011041020. IBM11D8320B8M x 3211/11, 5.0V, Sn/PbMMDS13DSU-011041020.
IBM11D4320B
IBM11D8320B
4M/8M x 32 DRAM Module
Features
• 72-Pin JEDEC Standard Single-In-Line
Memory Module
• Performance:
• High Performance CMOS process
• Single 5V, ± 0.5V Power Supply.
• All inputs & outputs are fully TTL & CMOS.
compatible.
• Fast Page Mode access cycle.
• Refresh Modes: RAS-Only, CBR and Hidden
Refresh .
• 2048 refresh cycles distributed across 32ms.
• 11/11 Addressing (Row/Column).
• Optimized for use in byte-write, non-parity appli-
cations.
-60
-70
tRAC
tCAC
tAA
RAS Access Time
CAS Access Time
60ns 70ns
15ns 20ns
Access Time From Address 30ns 35ns
tRC
Cycle Time
110ns 130ns
• Tin/lead version only.
• 16MB versions in TSOP or SOJ packages.
• 32MB version only in SOJ package.
tPC
Fast Page Mode Cycle Time 40ns 45ns
Description
The IBM11D8320B is a 32MB industry standard
72-pin 4-byte single in-line memory module (SIMM).
The module is organized as an 8Mx32 high speed
memory array, and is configured as two 4Mx32
banks, each independently selectable via unique
RAS inputs. The assembly is intended for use in 16,
32 and 64 bit applications. It is manufactured with
sixteen 4Mx4 devices, each in a 300mil SOJ pack-
age, and is compatible with the JEDEC 72-Pin
SIMM standard. The IBM11D4320B is a 16MB half-
populated version, manufactured with eight 4Mx4
devices, each in a 300mil TSOP or SOJ package.
The IBM 72-Pin SIMMs provide a high performance,
flexible 4-byte interface in a 4.25” long footprint.
Related products include the 8Mx36 parity SIMM,
IBM11D8360B, as well as other density offerings.
Card Outline
36 37
72
1
©IBM Corporation. All rights reserved.
Use is further subject to the provisions at the end of this document.
50H7993
SA14-4339-01
Revised 5/96
Page 1 of 20
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