INSIDE THE P320H HHHL (CONT’D)
The P320h is built on a main half-height, half-length PCB. In order to fit all of the flash on the device, Micron created a mother and daughter board scenario where 64 packages are placed back-to-back on the left and right sides. Luckily, SLC has the benefit of high temperature operation, while MLC can suffer errors above 60c. Without breathing room between the flash, it could get quite hot.
The controller is centrally located in the middle of the card, with five Micron DDR3 DRAM chips along side. These DDR3 modules are 256MB parts running at 667MHz.
On the back, the remaining 16 pieces of the 64 NAND placements are located, with 4 more DDR3 modules. These are slightly different Micron ICs than the five front mounted.
The half-height, half-length board measures 68.90mm x 167.65mm x 18.71mm.