64Mx72 bits

Low Profile Registered DDR SDRAM DIMM

This document is a general product description and is subject to change without notice. Hynix Semiconductor does not assume any

responsibility for use of circuits described. No patent licenses are implied.

Rev. 0.2/ Dec. 2003

2

HYMD264G726B(L)4M-M/K/H/L

DESCRIPTION

Hynix HYMD264G726B(L)4M-M/K/H/L series is Low Profile registered 184-pin double data rate Synchronous DRAM

Dual In-Line Memory Modules (DIMMs) which are organized as 64Mx72 high-speed memory arrays. Hynix

HYMD264G726B(L)4M-M/K/H/L series consists of eighteen 64Mx4 DDR SDRAM in 400mil TSOP II packages on a

184pin glass-epoxy substrate. Hynix HYMD264G726B(L)4M-M/K/H/L series provide a high performance 8-byte inter-

face in 5.25" width form factor of industry standard. It is suitable for easy interchange and addition.

Hynix HYMD264G726B(L)4M-M/K/H/L series is designed for high speed of up to 133MHz and offers fully synchronous

operations referenced to both rising and falling edges of differential clock inputs. While all addresses and control inputs

are latched on the rising edges of the clock, Data, Data strobes and Write data masks inputs are sampled on both ris-

ing and falling edges of it. The data paths are internally pipelined and 2-bit prefetched to achieve very high bandwidth.

All input and output voltage levels are compatible with SSTL_2. High speed frequencies, programmable latencies and

burst lengths allow variety of device operation in high performance memory system.

Hynix HYMD264G726B(L)4M-M/K/H/L series incorporates SPD(serial presence detect). Serial presence detect func-

tion is implemented via a serial 2,048-bit EEPROM. The first 128 bytes of serial PD data are programmed by Hynix to

identify DIMM type, capacity and other the information of DIMM and the last 128 bytes are available to the customer.

FEATURES

ORDERING INFORMATION

Part No.

Power Supply

Clock Frequency

Interface

Form Factor

HYMD264G726B(L)4M-M

133MHz (*DDR266:2-2-2)

SSTL_2

184pin Low Profile Registered

DIMM

5.25 x 1.2 x 0.15 inch

HYMD264G726B(L)4M-K

133MHz (*DDR266A)

HYMD264G726B(L)4M-H

133MHz (*DDR266B)

HYMD264G726B(L)4M-L

100MHz (*DDR200)

•

512MB (64M x 72) Low Profile Registered DDR

DIMM based on 64Mx4 DDR SDRAM

•

JEDEC Standard 184-pin dual in-line memory mod-

ule (DIMM)

•

Error Check Correction (ECC) Capability

•

Registered inputs with one-clock delay

•

Phase-lock loop (PLL) clock driver to reduce loading

•

2.5V +/- 0.2V VDD and VDDQ Power supply

•

All inputs and outputs are compatible with SSTL_2

interface

•

Fully differential clock operations (CK & /CK) with

100MHz/125MHz/133MHz

•

Programmable CAS Latency 2 / 2.5 supported

•

Programmable Burst Length 2 / 4 / 8 with both

sequential and interleave mode

•

tRAS Lock-out function supported

•

Internal four bank operations with single pulsed RAS

•

Auto refresh and self refresh supported

•

8192 refresh cycles / 64ms

* JEDEC Defined Specifications compliant