HYS 72Vxx3xxGR-7.5
PC133 Registered SDRAM-Modules
3.3 V 168-pin Registered SDRAM Modules
PC133 128 MByte Module
PC133 256 MByte module
PC133 512 MByte Module
PC133 1 GByte Module
• 168-pin Registered 8 Byte Dual-In-Line
SDRAM Module for PC and Server main
memory applications
• Programmable CAS Latency, Burst Length,
and Wrap Sequence (Sequential &
Interleave)
• One bank 16M × 72, 32M x 72 and 64M × 72 • Auto Refresh (CBR) and Self Refresh
two bank 128M × 72 organization
• All inputs and outputs are LVTTL compatible
• Optimized for ECC applications with very low
• Serial Presence Detect with E2PROM
input capacitances
• Utilizes SDRAMs in TSOPII-54 packages
• JEDEC standard Synchronous DRAMs
with registers and PLL.
(SDRAM) Programmable CAS Latency, Burst
Length and Wrap Sequence (Sequential &
Interleave)
• Card Size: 133.35 mm × 43.18 mm × 3.99/
8.13 mm with Gold contact pads
• Single + 3.3 V (± 0.3 V) power supply
• These modules all fully compatible with the
current PC133 and INTELs PC100
specifications
• Performance:
-7.5
Unit
MHz
ns
fCK
tCK
tAC
Clock Frequency (max.) @ CL = 3 133
Clock Cycle Time (min.) @ CL = 3 7.5
Clock Access Time (min.)
CAS Latency = 3
5.4
ns
The HYS 72Vxx3xxGR-7.5 are industry standard 168-pin 8-byte Dual in-line Memory Modules
(DIMMs) organized as 16M × 72, 32M x 72, 64M × 72 and 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
1.00
