HYS 64/72V64220GU
SDRAM-Modules
3.3 V 64M × 64/72-Bit SDRAM Modules
168-pin Unbuffered DIMM Modules
• 168-pin unbuffered 8 Byte Dual-In-Line
SDRAM Modules for PC main memory
applications
• Single + 3.3 V (± 0.3 V) power supply
• Programmable CAS Latency, Burst Length,
and Wrap Sequence (Sequential &
Interleave)
• PC100 and PC133 versions
• Two bank 64M × 64 and 64M × 72
• Auto Refresh (CBR) and Self Refresh
• Decoupling capacitors mounted on substrate
• All inputs and outputs are LVTTL compatible
• Serial Presence Detect with E2PROM
organization
• Optimized for byte-write non-parity or ECC
applications
• Fully PC board layout compatible to INTEL’s
Rev. 1.0 module specification
• Uses Infineon 256 Mbit SDRAM components
in 32M × 8 organization and TSOPII-54
packages
• JEDEC standard Synchronous DRAMs
(SDRAM
• Gold contact pad, card size:
• Programmed Latencies:
133.35 mm × 31.75 mm × 4.00 mm
Product Speed
CL tRCD
tRP
3
-7.5
-8
PC133
3
2
3
3
3
2
2
2
PC100
PC100
PC100
2
-8A
-8B
2
3
• SDRAM Performance:
-7.5
-8
-8A
PC100
100
6
-8B
PC100
100
6
Unit
PC133
133
PC100
100
6
fCK
tAC
Clock Frequency (max.)
Clock Access time
MHz
ns
5.4
The HYS 64V64220GU and HYS 72V64220GU are industry standard 168-pin 8-byte Dual in-line
Memory Modules (DIMMs) which are organized as 64M × 64 and 64M × 72 in two banks high speed
memory arrays designed with 256M Synchronous DRAMs (SDRAMs) for non-parity and ECC
applications. The DIMMs use 7-5 speed sorted 256 Mbit Synchronous DRAMs (SDRAMs) to meet
the PC133-333 requirements and -8, -8A and -8B components for the standard PC100 applications.
Decoupling capacitors are mounted on the PC board. The PC board design is according to INTEL’s
PC100 module specification. The DIMMs have a serial presence detect, implemented with 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, with 1.25“ (31.75 mm) height.
Data Book
1
3.00