Samsung’s Flex One NAND has moved
to 40 nm. It combines multi-level cell
(MLC) and single-level cell (SLC) flash with
an SRAM front end providing NOR functionality,
including the ability to run applications
directly.
The Flex One
uses a 2-kbyte
SRAM cache to
implement SLC
flash. Designers
can configure the
flash memory
split into SLC
(code and data)
and MLC (data)
partitions. MLC
storage density
is twice the 1-bit/cell total for the SLC side.
Flash capacities up to 2 Gbytes are available
with a dual-die package delivering 4
Gbytes. Samsung provides its own flash
file system drivers.
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