Transcend 512MB, DDR2, 533Mhz, PC4200/4300, JetRam, CL4 JM367Q643A-5 User Manual

 

 

Transcend Information Inc.

 

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The JM367Q643A-5 is a 64M x 64bits DDR2-533 

Unbuffered DIMM. The JM367Q643A-5 consists of 8 pcs 

64Mx8bits DDR2 SDRAMs in 60 ball FBGA packages 

and a 2048 bits serial EEPROM on a 240-pin printed 

circuit board. The JM367Q643A-5 is a Dual In-Line 

Memory Module and is intended for mounting into 240-pin 

edge connector sockets. 

Synchronous design allows precise cycle control with the 

use of system clock. Data I/O transactions are possible 

on both edges of DQS. Range of operation frequencies, 

programmable latencies allow the same device to be 

useful for a variety of high bandwidth, high performance 

memory system applications. 

•  RoHS compliant products. 
•  JEDEC standard 1.8V ± 0.1V Power supply   
•  VDDQ=1.8V ± 0.1V 
•  Max clock Freq: 267MHZ; 533Mb/S/Pin. 
•  Posted CAS   
•  Programmable CAS Latency: 3,4,5 
•  Programmable Additive Latency :0, 1,2,3 and 4 
•  Write Latency (WL) = Read Latency (RL)-1 
•  Burst Length: 4,8(Interleave/nibble sequential) 
•  Programmable sequential / Interleave Burst Mode 
•  Bi-directional Differential Data-Strobe (Single-ended   

 

     

data-strobe is an optional feature)         

•  Off-Chip Driver (OCD) Impedance Adjustment 
•  MRS cycle with address key programs. 
•  On Die Termination 
•  Refresh and Self Refresh 

     Average Refresh Period 7.8us at lower then TCASE 

75°C 

•  Serial presence detect with EEPROM 

 

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