CY14B256LA-SZ25XI Cypress Semiconductor Corp, CY14B256LA-SZ25XI Datasheet - Page 4
![IC NVSRAM 256KBIT 25NS 32SOIC](/photos/29/2/290209/soic32_sml.jpg)
CY14B256LA-SZ25XI
Manufacturer Part Number
CY14B256LA-SZ25XI
Description
IC NVSRAM 256KBIT 25NS 32SOIC
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Specifications of CY14B256LA-SZ25XI
Memory Size
256K (32K x 8)
Package / Case
*
Format - Memory
RAM
Memory Type
NVSRAM (Non-Volatile SRAM)
Speed
25ns
Interface
Parallel
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Organization
32 K x 8
Access Time
25 ns
Supply Voltage (max)
3.6 V
Supply Voltage (min)
2.7 V
Operating Current
70 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Word Size
8b
Density
256Kb
Interface Type
Parallel
Access Time (max)
25ns
Package Type
SOIC
Operating Temperature Classification
Industrial
Operating Supply Voltage (max)
3.6V
Operating Supply Voltage (min)
2.7V
Operating Temp Range
-40C to 85C
Pin Count
32
Mounting
Surface Mount
Supply Current
70mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
CY14B256LA-SZ25XI
Manufacturer:
CY
Quantity:
300
Part Number:
CY14B256LA-SZ25XI
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
Part Number:
CY14B256LA-SZ25XIT
Manufacturer:
CYPRESS/赛普拉斯
Quantity:
20 000
AutoStore Inhibit
The STK14C88-3 has the AutoStore Inhibit feature and the
CY14B256LA has AutoStore Disable mode. These two
provide the same result of AutoStore disable but are done
by different means – hardware in STK14C88-3 and software
in CY14B256LA.
To disable AutoStore in STK14C88-3, the power is
connected to the V
left open). This cannot be done in CY14B256LA. For proper
operation of the device, in CY14B256LA, power is
connected to the V
is more easily done through simple software sequence.
Therefore, if the STK14C88-3 is replaced in an application
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 powered up.
October 5, 2009
CC
CAP
pin only. However, AutoStore disable
pin and the V
CC
pin is grounded (or
CC
Document No. 001-55662 Rev. **
pin and a
STORE Cycles
The NV STORE cycles endurance in CY14B256LA is lower
than the endurance in the older 0.8u technology. However,
this would not affect most applications since all nvSRAMs
have infinite read/write endurance and the NV STORE cycle
happens 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 CY14B256LA.
Data Retention
The Data Retention in 0.13u part is vastly improved from the
older technology part. The CY14B256LA has a data
retention of 20 years at 85°C against the STK14C88-3 data
retention of 100 years at 55°C. This translates to over
4 times improvement in data retention at the same
temperatures.
AN55662
4
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