JMicron JMF667H Reference Designs
As stated in the introduction, we have four reference design boards from JMicron. Two of the drives use Toshiba A19 flash, a 128GB drive and a 240GB drive. Our sample with L85C is 128GB, and our L85A sample is 256GB. Ideally, we would have both capacity sizes with each flash type and six drives total. We'll work on that and possibly refresh with the final firmware.
JMicron JMF667H with IMFT L85C 128GB
This model uses a JMicron JMF667H controller paired with eight IMFT L85C flash packages.
The firmware we tested is SVN417w.
JMIcron used an Elite Semiconductor Memory Technology DDR3 SDRAM buffer on this unit.
The eight IMFT 20nm NAND packages are marked 29F16B08LCMFS.
JMicron JMF667H with IMFT L85A 256GB
This model uses a JMicron JMF667H controller paired with eight IMFT L85A flash packages.
Like the 128GB model above, the firmware on this drive is SVN417w.
The 256GB model uses a 128MB NANYA DDR3 SDRAM buffer.
Eight IMFT 20nm L85A flash packages marked 29F32B08MCMF2 are on one side of the PCB, but pads for an additional eight are on the other side.
The 256GB L85A model doesn't populate the bottom pads.
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