Transcend JM388Q643A-6 Memory Module Computer Component

The JM388Q643A-6 is a 128M x 64bits DDR2-667 Unbuffered DIMM. The JM388Q643A-6 consists of 16pcs 64Mx8bits DDR2 SDRAMs in 60 ball FBGA packages and a 2048 bits serial EEPROM on a 240-pin printed circuit board. The JM388Q643A-6 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.

Features:
-RoHS compliant products
-JEDEC standard 1.8V ± 0.1V Power supply
-VDDQ=1.8V ± 0.1V
-Max clock Freq: 333MHZ; 667Mb/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
-Serial presence detect with EEPROM