HYMD264726B8J-J Datasheet, PDF (1/16 Pages) Hynix Semiconductor – Unbuffered DDR SDRAM DIMM

DESCRIPTION
64Mx72 bits
Unbuffered DDR SDRAM DIMM
HYMD264726B(L)8J-J
Hynix HYMD264726B(L)8J-J series is unbuffered 184-pin double data rate Synchronous DRAM Dual In-Line Memory
Modules (DIMMs) which are organized as 64Mx72 high-speed memory arrays. Hynix HYMD264726B(L)8J-Jseries
consists of eighteen 32Mx8 DDR SDRAM in 400mil TSOP II packages on a 184pin glass-epoxy substrate. Hynix
HYMD264726B(L)8J-J series provide a high performance 8-byte interface in 5.25" width form factor of industry stan-
dard. It is suitable for easy interchange and addition.
Hynix HYMD264726B(L)8J-J series is designed for high speed of up to 166MHz and offers fully synchronous opera-
tions 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 rising
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 HYMD264726B(L)8J-J series incorporates SPD(serial presence detect). Serial presence detect function 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
• 512MB (64M x 72) Unbuffered DDR DIMM based on • Data(DQ), Data strobes and Write masks latched on
32Mx8 DDR SDRAM
both rising and falling edges of the clock
• JEDEC Standard 184-pin dual in-line memory mod-
ule (DIMM)
• Data inputs on DQS centers when write (centered
DQ)
• Error Check Correction (ECC) Capability
• 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/166MHz
• Data strobes synchronized with output data for read
and input data for write
• Programmable CAS Latency 2 / 2.5 supported
• Programmable Burst Length 2 / 4 / 8 with both
sequential and interleave mode
• tRAS Lock-out function supported
• All addresses and control inputs except Data, Data • Internal four bank operations with single pulsed RAS
strobes and Data masks latched on the rising edges
of the clock
•
Auto refresh and self refresh supported
• 8192refresh cycles / 64ms
ORDERING INFORMATION
Part No.
HYMD264726B(L)8J-J
Power Supply
VDD=2.5V
VDDQ=2.5V
Clock Frequency
166MHz (*DDR333)
Interface
Form Factor
SSTL_2
184pin Unbuffered DIMM
5.25 x 1.25 x 0.15 inch
* JEDEC Defined Specifications compliant
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. 0.1/Oct. 02
1