HYS 72Vx2xxGR
PC100 Registered SDRAM-Modules
3.3 V 168-pin Registered SDRAM Modules
64 MB, 128 MB, 256 MB, 512 MB & 1 GB Densities
• 168-pin JEDEC Standard, Registered 8 Byte • Programmable CAS Latency, Burst Length,
Dual-In-Line SDRAM Module
for PC and Server main memory applications
and Wrap Sequence (Sequential &
Interleave)
• One bank 8M × 72, 16M × 72, 32M × 72 and • Auto Refresh (CBR) and Self Refresh
64M × 72 organization,
• All inputs and outputs are LVTTL compatible
two bank 128M × 72 organization
• Serial Presence Detect with E2PROM
• Optimized for ECC applications with very low
input capacitances
• Utilizes SDRAMs in TSOPII-54 packages
with registers and PLL.
• Programmed Latencies:
The two bank module uses stacked TSOP54
packages.
Product Speed
CL tRCD
tRP
2
• Card Size: 133.35 mm × 38.1 mm/
43.18 mm × 4,00/6.50 mm with Gold contact
pads
-8
PC100
PC100
2
3
2
2
-8A
2
• Single + 3.3 V (± 0.3 V) power supply
• This specification follows INTEL’s “PC
SDRAM Registered DIMM Specification”
Rev. 1.2
• Performance:
-8
-8A
PC100
100
10
Unit
PC100
100
10
fCK
tCK
tAC
Clock Frequency (max.)
Clock Cycle Time (min.)
Clock Access Time (min.)
MHz
ns
6
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.
Data Book
1
3.00
