64Mx64 bits  
					Unbuffered DDR SO-DIMM  
					HYMD564M646A(L)6-J/K/H  
					Preliminary  
					DESCRIPTION  
					Hynix HYMD564M646A(L)6-J/K/H series is unbuffered 200-pin double data rate Synchronous DRAM Small Outline  
					Dual In-Line Memory Modules (SO-DIMMs) which are organized as 64Mx64 high-speed memory arrays. Hynix  
					HYMD564M646A(L)6-J/K/H series consists of eight 32Mx16 DDR SDRAM in 400mil TSOP II packages on a 200pin  
					glass-epoxy substrate. Hynix HYMD564M646A(L)6-J/K/H series provide a high performance 8-byte interface in  
					67.60mmX 31.75mm form factor of industry standard. It is suitable for easy interchange and addition.  
					Hynix HYMD564M646A(L)6-J/K/H series is designed for high speed of up to 166MHz 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 HYMD564M646A(L)6-J/K/H 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 64) Unbuffered DDR SO-DIMM  
					based on 32Mx16 DDR SDRAM  
					both rising and falling edges of the clock  
					•
					•
					Data inputs on DQS centers when write (centered  
					DQ)  
					•
					JEDEC Standard 200-pin small outline dual in-line  
					memory module (SO-DIMM)  
					Data strobes synchronized with output data for read  
					and input data for write  
					•
					•
					2.5V +/- 0.2V VDD and VDDQ Power supply  
					All inputs and outputs are compatible with SSTL_2  
					interface  
					•
					•
					Programmable CAS Latency 2 / 2.5 supported  
					Programmable Burst Length 2 / 4 / 8 with both  
					sequential and interleave mode  
					•
					•
					Fully differential clock operations (CK & /CK) with  
					133MHz/166MHz  
					•
					•
					•
					•
					tRAS Lock-out function supported  
					All addresses and control inputs except Data, Data  
					strobes and Data masks latched on the rising edges  
					of the clock  
					Internal four bank operations with single pulsed RAS  
					Auto refresh and self refresh supported  
					8192 refresh cycles / 64ms  
					•
					Data(DQ), Data strobes and Write masks latched on  
					ORDERING INFORMATION  
					Part No.  
					Power Supply  
					Clock Frequency  
					Interface  
					Form Pactor  
					HYMD564M646A(L)6-J  
					HYMD564M646A(L)6-K  
					HYMD564M646A(L)6-H  
					166MHz (*DDR333)  
					133MHz (*DDR266A)  
					133MHz (*DDR266B)  
					VDD=2.5V  
					VDDQ=2.5V  
					200pin Unbuffered SO-DIMM  
					67.6mm x 31.75mm x 1mm  
					SSTL_2  
					* 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. 0.4 / Oct. 2004  
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