Internet Data Sheet
HYS72D[128/64/32]3xx[G/H]BR–[5/6/7]–C
Registered Double Data Rate SDRAM
1
Overview
This chapter gives an overview of the 184-pin Registered Double Data Rate DDR2 SDRAM Modules with parity bit product
family and describes its main characteristics.
1.1
Features
•
184-Pin Registered 8-Byte Dual-In-Line DDR SDRAM
Module for “1U” PC, Workstation and Server main memory
applications
One rank 32M × 72 and 64M × 72 and two ranks 64M × 72
and 128M × 72 organization
JEDEC standard Double Data Rate Synchronous DRAMs
(DDR SDRAM) with a single + 2.5 V (± 0.2 V) power
supply and + 2.6 V (± 0.1 V) power supply for DDR400
Built with 256-Mbit DDR SDRAMs in P--TFBGA-60-1
packages
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•
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Auto Refresh (CBR) and Self Refresh
All inputs and outputs SSTL_2 compatible
Re-drive for all input signals using register and PLL
devices.
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Serial Presence Detect with E2PROM
Low Profile Modules form factor: 133.35 mm × 28.58 mm
× 4.00 mm / 2.64 mm and for 1GB 133.35 mm × 30.48 mm
(1.2”)× 4.00 mm
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JEDEC standard reference layout for one rank 256 MB,
512 MB and two ranks 512 MB, 1 GB: PC 2700 and
PC 3200 Registered DIMM Raw Cards A,B,C,D
Gold plated contacts
Programmable CAS Latency, Burst Length, and Wrap
Sequence (Sequential & Interleave)
TABLE 1
Performance
Part Number Speed Code
-5
–6
-7
Unit
Speed Grade Component
Module
DDR400B
PC3200-3033
200
DDR333B
PC2700–2533
166
DDR266A
—
PC2100-2033
—
max. Clock
Frequency
@CL3
@CL2.5
@CL2
fCK3
—
MHz
MHz
MHz
fCK2.5
fCK2
166
166
143
133
133
133
1.2
Description
The HYS72D[128/64/32]3xx[G/H]BR–[5/6/7]–C and devices and a PLL for the clock distribution. This reduces
HYS72D64320GBR–5–C are low profile versions of the
standard Registered DIMM modules suitable for 1U Server
Applications. The Low Profile DIMM versions are available as
32M × 72 (256 MB), 64M × 72 (512 MB), 128M × 72 (1 GB)
capacitive loading to the system bus, but adds one cycle to
the SDRAM timing. A variety of decoupling capacitors are
mounted on the PC board. The DIMMs feature serial
presence detect based on a serial E2PROM device using the
2-pin I2C protocol. The first 128 bytes are programmed with
configuration data and the second 128 bytes are available to
the customer.
The memory array is designed with Double Data Rate
Synchronous DRAMs for ECC applications. All control and
address signals are re-driven on the DIMM using register
Rev. 1.32, 2007-03
3
03292006-Q22P-G7TH