<s>
Universal	B-Device
Flash	I-Device
Storage	I-Device
(	O
UFS	O
)	O
is	O
a	O
flash	B-Device
storage	I-Device
specification	O
for	O
digital	B-Device
cameras	I-Device
,	O
mobile	O
phones	O
and	O
consumer	O
electronic	O
devices	O
.	O
</s>
<s>
It	O
was	O
designed	O
to	O
bring	O
higher	O
data	O
transfer	O
speed	O
and	O
increased	O
reliability	O
to	O
flash	B-Device
memory	I-Device
storage	O
,	O
while	O
reducing	O
market	O
confusion	O
and	O
removing	O
the	O
need	O
for	O
different	O
adapters	O
for	O
different	O
types	O
of	O
cards	O
.	O
</s>
<s>
The	O
standard	O
encompasses	O
both	O
packages	O
permanently	O
attached	O
(	O
embedded	O
)	O
within	O
a	O
device	O
(	O
)	O
,	O
and	O
removable	O
UFS	O
memory	B-Device
cards	I-Device
.	O
</s>
<s>
It	O
may	O
use	O
multiple	B-Architecture
stacked	I-Architecture
3D	O
TLC	O
NAND	O
flash	O
dies	O
(	O
integrated	O
circuits	O
)	O
with	O
an	O
integrated	O
controller	O
.	O
</s>
<s>
The	O
proposed	O
flash	B-Device
memory	I-Device
specification	O
is	O
supported	O
by	O
consumer	O
electronics	O
companies	O
such	O
as	O
Nokia	O
,	O
Sony	O
Ericsson	O
,	O
Texas	O
Instruments	O
,	O
STMicroelectronics	O
,	O
Samsung	B-Application
,	O
Micron	O
,	O
and	O
SK	O
Hynix	O
.	O
</s>
<s>
UFS	O
is	O
positioned	O
as	O
a	O
replacement	O
for	O
and	O
SD	B-Device
cards	I-Device
.	O
</s>
<s>
The	O
electrical	O
interface	O
for	O
UFS	O
uses	O
the	O
M-PHY	B-Protocol
,	O
developed	O
by	O
the	O
MIPI	O
Alliance	O
,	O
a	O
high-speed	O
serial	O
interface	O
targeting	O
2.9Gbit/s	O
per	O
lane	O
with	O
up-scalability	O
to	O
5.8Gbit/s	O
per	O
lane	O
.	O
</s>
<s>
UFS	O
implements	O
a	O
full-duplex	O
serial	O
LVDS	B-Architecture
interface	O
that	O
scales	O
better	O
to	O
higher	O
bandwidths	O
than	O
the	O
8-lane	O
parallel	O
and	O
half-duplex	O
interface	O
of	O
.	O
</s>
<s>
Unlike	O
eMMC	O
,	O
Universal	B-Device
Flash	I-Device
Storage	I-Device
is	O
based	O
on	O
the	O
SCSI	O
architectural	O
model	O
and	O
supports	O
SCSI	O
Tagged	O
Command	O
Queuing	O
.	O
</s>
<s>
The	O
Linux	B-Operating_System
kernel	I-Operating_System
supports	O
UFS	O
.	O
</s>
<s>
In	O
2010	O
,	O
the	O
Universal	B-Device
Flash	I-Device
Storage	I-Device
Association	I-Device
(	O
UFSA	B-Device
)	O
was	O
founded	O
as	O
an	O
open	O
trade	O
association	O
to	O
promote	O
the	O
UFS	O
standard	O
.	O
</s>
<s>
In	O
September	O
2013	O
,	O
JEDEC	O
published	O
JESD220B	B-Device
UFS	B-Device
2.0	I-Device
(	O
update	O
to	O
UFS	O
v1.1	O
standard	O
published	O
in	O
June	O
2012	O
)	O
.	O
</s>
<s>
JESD220B	B-Device
Universal	B-Device
Flash	I-Device
Storage	I-Device
v2.0	O
offers	O
increased	O
link	O
bandwidth	O
for	O
performance	O
improvement	O
,	O
a	O
security	O
features	O
extension	O
and	O
additional	O
power	O
saving	O
features	O
over	O
the	O
UFS	O
v1.1	O
.	O
</s>
<s>
On	O
30	O
January	O
2018	O
JEDEC	O
published	O
version	O
3.0	O
of	O
the	O
UFS	O
standard	O
,	O
with	O
a	O
higher	O
11.6	O
Gbit/s	O
data	O
rate	O
per	O
lane	O
(	O
1450	O
MB/s	O
)	O
with	O
the	O
use	O
of	O
MIPI	B-Protocol
M-PHY	I-Protocol
v4.1	O
and	O
UniProSM	B-Application
v1.8	O
.	O
</s>
<s>
At	O
the	O
MWC	O
2018	O
,	O
Samsung	B-Application
unveiled	O
embedded	B-Device
UFS	I-Device
(	O
)	O
v3.0	O
and	O
uMCP	O
(	O
UFS-based	O
multi-chip	B-Algorithm
package	I-Algorithm
)	O
solutions	O
.	O
</s>
<s>
UFS	B-Device
3.1	I-Device
introduces	O
Write	O
Booster	O
,	O
Deep	O
Sleep	O
,	O
Performance	O
Throttling	O
Notification	O
and	O
Host	O
Performance	O
Booster	O
for	O
faster	O
,	O
more	O
power	O
efficient	O
and	O
cheaper	O
UFS	O
solutions	O
.	O
</s>
<s>
In	O
2022	O
Samsung	B-Application
announced	O
version	O
4.0	O
doubling	O
from	O
11.6	O
Gbit/s	O
to	O
23.2	O
Gbit/s	O
with	O
the	O
use	O
of	O
MIPI	B-Protocol
M-PHY	I-Protocol
v5.0	O
and	O
UniPro	B-Application
v2.0	O
.	O
</s>
<s>
In	O
February	O
2013	O
,	O
semiconductor	O
company	O
Toshiba	O
Memory	O
(	O
now	O
Kioxia	O
)	O
started	O
shipping	O
samples	O
of	O
a	O
64GB	O
NAND	O
flash	B-Device
chip	I-Device
,	O
the	O
first	O
chip	O
to	O
support	O
the	O
then	O
new	O
UFS	O
standard	O
.	O
</s>
<s>
In	O
April	O
2015	O
,	O
Samsung	B-Application
's	O
Galaxy	O
S6	O
family	O
was	O
the	O
first	O
phone	O
to	O
ship	O
with	O
storage	O
using	O
the	O
UFS	B-Device
2.0	I-Device
standard	O
.	O
</s>
<s>
On	O
7	O
July	O
2016	O
,	O
Samsung	B-Application
announced	O
its	O
first	O
UFS	B-Device
cards	I-Device
,	O
in	O
32	O
,	O
64	O
,	O
128	O
,	O
and	O
256	O
GB	O
storage	O
capacities	O
.	O
</s>
<s>
The	O
cards	O
were	O
based	O
on	O
the	O
UFS	B-Device
1.0	I-Device
Card	O
Extension	O
Standard	O
.	O
</s>
<s>
On	O
17	O
November	O
2016	O
,	O
Qualcomm	O
announced	O
the	O
Snapdragon	B-Architecture
835	I-Architecture
SoC	B-Architecture
with	O
support	O
for	O
UFS	B-Device
2.1	I-Device
.	O
</s>
<s>
On	O
14	O
May	O
2019	O
,	O
OnePlus	O
introduced	O
the	O
OnePlus	O
7	O
and	O
OnePlus	O
7	O
Pro	O
,	O
the	O
first	O
phones	O
to	O
feature	O
built-in	O
3.0	O
(	O
The	O
Galaxy	O
Fold	O
,	O
originally	O
planned	O
to	O
be	O
the	O
first	O
smartphone	O
to	O
feature	O
UFS	B-Device
3.0	I-Device
was	O
ultimately	O
delayed	O
after	O
the	O
OnePlus	O
7	O
's	O
launch	O
)	O
.	O
</s>
<s>
The	O
first	O
UFS	B-Device
cards	I-Device
began	O
to	O
be	O
publicly	O
sold	O
in	O
early	O
2020	O
.	O
</s>
<s>
According	O
to	O
a	O
Universal	B-Device
Flash	I-Device
Storage	I-Device
Association	I-Device
press	O
release	O
,	O
Samsung	B-Application
planned	O
to	O
transition	O
its	O
products	O
to	O
UFS	B-Device
cards	I-Device
during	O
2020	O
.	O
</s>
<s>
Several	O
consumer	O
devices	O
with	O
UFS	B-Device
card	I-Device
slots	O
have	O
been	O
released	O
in	O
2020	O
.	O
</s>
<s>
UFS	B-Device
2.0	I-Device
has	O
been	O
implemented	O
in	O
Snapdragon	B-Architecture
820	O
and	O
821	O
.	O
</s>
<s>
Kirin	B-Architecture
950	O
and	O
955	O
.	O
</s>
<s>
UFS	B-Device
2.1	I-Device
has	O
been	O
implemented	O
in	O
Snapdragon	B-Architecture
712	O
(	O
710&720G	O
)	O
,	O
730G	O
,	O
732G	O
,	O
835	O
,	O
845	O
and	O
855	O
.	O
</s>
<s>
Kirin	B-Architecture
960	O
,	O
970	O
and	O
980	O
.	O
</s>
<s>
UFS	B-Device
3.0	I-Device
has	O
been	O
implemented	O
in	O
Snapdragon	B-Architecture
855	O
,	O
855+	O
,	O
860	O
,	O
865	O
,	O
Exynos	O
9820	O
–	O
9825	O
,	O
and	O
Kirin	B-Architecture
990	O
.	O
</s>
<s>
UFS	B-Device
3.1	I-Device
has	O
been	O
implemented	O
in	O
Snapdragon	B-Architecture
855+	O
/860	O
,	O
Snapdragon	B-Architecture
865	O
,	O
Snapdragon	B-Architecture
870	O
,	O
Snapdragon	B-Architecture
888	O
,	O
Exynos	O
2100	O
,	O
and	O
Exynos	O
2200	O
.	O
</s>
<s>
UFS	B-Device
4.0	I-Device
has	O
been	O
implemented	O
in	O
MediaTek	O
Dimensity	O
9200	O
and	O
Snapdragon	B-Architecture
8	O
Gen	O
2	O
.	O
</s>
<s>
On	O
30	O
March	O
2016	O
,	O
JEDEC	O
published	O
version	O
1.0	O
of	O
the	O
UFS	B-Device
Card	I-Device
Extension	I-Device
Standard	O
(	O
JESD220-2	B-Device
)	O
,	O
which	O
offered	O
many	O
of	O
the	O
features	O
and	O
much	O
of	O
the	O
same	O
functionality	O
as	O
the	O
existing	O
UFS	B-Device
2.0	I-Device
embedded	O
device	O
standard	O
,	O
but	O
with	O
additions	O
and	O
modifications	O
for	O
removable	O
cards	O
.	O
</s>
<s>
Also	O
in	O
March	O
2016	O
,	O
JEDEC	O
published	O
version	O
1.1	O
of	O
the	O
UFS	B-Device
Unified	I-Device
Memory	I-Device
Extension	I-Device
(	O
JESD220-1A	B-Device
)	O
,	O
version	O
2.1	O
of	O
the	O
UFS	B-Device
Host	I-Device
Controller	I-Device
Interface	I-Device
(	O
UFSHCI	B-Device
)	O
standard	O
(	O
JESD223C	B-Device
)	O
,	O
and	O
version	O
1.1A	O
of	O
the	O
UFSHCI	B-Device
Unified	I-Device
Memory	I-Device
Extension	I-Device
standard	O
(	O
JESD223-1A	B-Device
)	O
.	O
</s>
<s>
On	O
January	O
30	O
,	O
2018	O
,	O
the	O
UFS	B-Device
Card	I-Device
Extension	I-Device
standard	O
was	O
updated	O
to	O
version	O
1.1	O
(	O
JESD220-2A	B-Device
)	O
,	O
and	O
the	O
UFSHCI	B-Device
standard	O
was	O
updated	O
to	O
version	O
3.0	O
(	O
JESD223D	O
)	O
,	O
to	O
align	O
with	O
UFS	O
version	O
3.0	O
.	O
</s>
<s>
Each	O
write/erase	O
cycle	O
causes	O
a	O
flash	B-Device
memory	I-Device
cell	O
's	O
oxide	O
layer	O
to	O
deteriorate	O
.	O
</s>
<s>
This	O
is	O
typical	O
of	O
flash	B-Device
memory	I-Device
in	O
general	O
.	O
</s>
