Cheaper controllers
The package of the relatively new Phison PS5019-E19T controller already attracts attention with its small dimensions. It measures a whole 7 × 11 mm and already suggests a clearly fancy, inner simplification. The casing of the well-known Phison PS5016-E16, for example, is even almost three times larger, although the same 28 nm node from TSMC process is used for manufacturing. The reasons for the shrinkage cure are also quickly explained.
Thus, the Phison PS5019-E19T is based on a single-core rather than dual-core ARM Cortex R5 processor. For this, the number of possible channels for connecting the flash memory is reduced to four instead of eight, which also limits the use of modules (number size) somewhat. By the way, the DRAM interface is also missing, but I already wrote something about the unbuffered operation on the first page. The Phison PS5019-E19T is thus a truly extreme (but purposeful) stripped-down controller designed for building low-cost, unbuffered SSDs with PCIe 4.0 support. And it is also more frugal with a power consumption of well under 4 watts, which makes it much cooler than the E16 or E12 models.
The overview of all features can be found in Phison’s (rather simple) data sheet:
Consumer_PS5019-E19T_202011
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