HYS 72Vx2xxGR
PC100 Registered SDRAM-Modules
3.3 V 168-pin Registered PC100 SDRAM Modules
64 MB, 128 MB, 256 MB, 512 MB & 1 GB Densities
•
•
168-pin JEDEC Standard, Registered 8 Byte
Dual-In-Line SDRAM Module
for PC and Server main memory applications
•
•
•
•
Auto Refresh (CBR) and Self Refresh
All inputs and outputs are LVTTL compatible
Serial Presence Detect with E2PROM
One bank 8M × 72, 16M × 72, 32M × 72 and
64M × 72 organization,
two bank 128M × 72 organization
Utilizes SDRAMs in TSOPII-54 packages
with registers and PLL.
The two bank module uses stacked TSOP54
packages.
•
•
Optimized for ECC applications with very low
input capacitances
•
•
Card Size: 133.35 mm × 38.1 mm/43.18 mm
with Gold contact pads (JEDEC MO-161)
Programmed Latencies:
Product Speed
-8 PC100
Single + 3.3 V (± 0.3 V) power supply
CL tRCD
tRP
This specification follows INTEL’s “PC
SDRAM Registered DIMM Specification”
Rev. 1.2
2
2
2
•
•
Programmable CAS Latency, Burst Length,
and Wrap Sequence (Sequential &
Interleave)
•
Performance:
-8
Unit
PC100
100
10
fCK
tCK
tAC
Clock Frequency (max.)
Clock Cycle Time (min.)
Clock Access Time (min.)
MHz
ns
6
ns
The HYS 72Vx2x0GR family are industry standard 168-pin 8-byte Dual in-line Memory Modules
(DIMMs) which are organized as 8M × 72, 16M × 72, 32M × 72, 64M × 72 & 128M × 72 high speed
memory arrays designed with Synchronous DRAMs (SDRAMs) for ECC applications. The 32M x 72
(256MByte) registered DIMM module is available in two versions (12 or 13 row addresses). All
control and address signals are registered on-DIMM and the design incorporates a PLL circuit for
the Clock inputs. Use of an on-board register reduces capacitive loading on the input signals but are
delayed by one cycle in arriving at the SDRAM devices. Decoupling capacitors are mounted on the
PC board. The DIMMs use a serial presence detects scheme implemented via a serial E2PROM
using the 2-pin I2C protocol. The first 128 bytes are utilized by the DIMM manufacturer and the
second 128 bytes are available to the end user. All Infineon 168-pin DIMMs provide a high
performance, flexible 8-byte interface in a 133.35 mm long footprint.
INFINEON Technologies
1
9.01
