CY14B256L-SZ45XI Cypress Semiconductor Corp, CY14B256L-SZ45XI Datasheet - Page 12
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CY14B256L-SZ45XI
Manufacturer Part Number
CY14B256L-SZ45XI
Description
IC NVSRAM 256KBIT 45NS 32SOIC
Manufacturer
Cypress Semiconductor Corp
Type
NVSRAMr
Specifications of CY14B256L-SZ45XI
Memory Size
256K (32K x 8)
Package / Case
32-SOIC (7.5mm Width)
Format - Memory
RAM
Memory Type
NVSRAM (Non-Volatile SRAM)
Speed
45ns
Interface
Parallel
Voltage - Supply
2.7 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Access Time
45ns
Supply Voltage Range
2.7V To 3.6V
Memory Case Style
SOIC
No. Of Pins
32
Operating Temperature Range
-40°C To +85°C
Memory Configuration
32K X 8
Interface Type
Parallel
Rohs Compliant
Yes
Word Size
8b
Organization
32Kx8
Density
256Kb
Access Time (max)
45ns
Operating Supply Voltage (typ)
3.3V
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
55mA
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:
CY14B256L-SZ45XI
Manufacturer:
CYPRESS
Quantity:
5 412
Company:
Part Number:
CY14B256L-SZ45XIT
Manufacturer:
2002+
Quantity:
6 235
Note
Document Number: 001-54707 Rev. *F
17. WE must be HIGH during SRAM read cycles.
18. HSB must remain HIGH during READ and WRITE cycles.
19. If WE is low when CE goes low, the outputs remain in the high impedance state.
20. CE or WE must be > V
Data Output
Data Output
Data Input
Address
Data Output
Data Input
Address
Address
WE
CE
CE
OE
I
IH
CC
WE
CE
during address transitions.
High Impedance
Figure 6. SRAM Read Cycle #2: CE and OE Controlled
Standby
Figure 7. SRAM Write Cycle #1: WE Controlled
Figure 8. SRAM Write Cycle #2: CE Controlled
Previous Data
t
SA
t
t
SA
PU
t
LZCE
t
LZOE
t
Address Valid
AA
High Impedance
t
t
ACE
AW
t
Address Valid
t
PWE
t
SCE
HZWE
Address Valid
t
t
SCE
DOE
t
t
PWE
RC
t
Active
WC
Input Data Valid
t
WC
t
SD
t
High Impedance
SD
Input Data Valid
Output Data Valid
t
LZWE
[18, 19, 20]
[18, 19, 20]
t
t
HD
HD
t
HA
t
HA
[17, 18]
t
t
HZCE
HZOE
t
PD
CY14B256LA
Page 12 of 22
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