CY14E256LA-SZ45XIT Cypress Semiconductor Corp, CY14E256LA-SZ45XIT Datasheet - Page 4

• Manufacturer Part Number: CY14E256LA-SZ45XIT
• Description: CY14E256LA-SZ45XIT
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY14E256LA-SZ45XIT

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 45ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

AutoStore Inhibit
The CY14E256L/STK14C88 has the AutoStore Inhibit
feature and the CY14E256LA has AutoStore Disable mode.
These two provide the same result of AutoStore disable but
are
CY14E256L/STK14C88 and software in CY14E256LA.
To disable AutoStore in CY14E256L/STK14C88, the power
is to be connected to the V
grounded (or left open). This cannot be done in
CY14E256LA. For proper operation of the device, in
CY14E256LA, power is to be connected to the V
However, AutoStore disable is more easily done through
simple
CY14E256L/STK14C88 is to be replaced in an applicaiton
where AutoStore has been disabled, then the layout has to
be modified to connect the power to the V
software sequence has to be used to disable AutoStore
function followed by a Software STORE, the first time the
board is powerd up.
October 5, 2009
done
software
by
different
sequence.
CAP
means
pin and the V
Therefore,
–
hardware
CC
CC
Document No. 001-55663 Rev. **
pin and a
CC
pin only.
if
pin is
the
in
STORE Cycles
The NV STORE cycles endurance in CY14E256LA is lower
than the endurance in the older 0.8u technology. However,
this would not affect in most applications since all nvSRAMs
have infinite read/write endurance and the NV STORE
would happen only during power down or during Software
STORE. For example, if a system is powered down 10 times
a day, then the NV STORE endurance is reached in
54 years in CY14E256LA.
Data Retention
The Data Retention in 0.13u part is vastly improved from the
older technology part. The CY14E256LA has a data
retention
CY14E256L/STK14C88 data retention of 100 years at 55°C.
This would translate to over 4 times improvement in data
retention at the same temperatures.
of
20
years
at
85°C
against
AN55663
the
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