CY14E256LA-SZ45XI Cypress Semiconductor Corp, CY14E256LA-SZ45XI Datasheet - Page 2

• Manufacturer Part Number: CY14E256LA-SZ45XI
• Description: IC NVSRAM 256KBIT 45NS 32SOIC
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of CY14E256LA-SZ45XI

• 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: *
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 45ns
• Operating Supply Voltage (typ): 5V
• Package Type: SOIC
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 4.5V
• Operating Temp Range: -40C to 85C
• Pin Count: 32
• Mounting: Surface Mount
• Supply Current: 52mA
• Memory Configuration: 32K X 8
• Access Time: 45ns
• Supply Voltage Range: 4.5V To 5.5V
• Memory Case Style: SOIC
• No. Of Pins: 32
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Contents
Pinouts .............................................................................. 3
Pin Definitions .................................................................. 3
Device Operation .............................................................. 4
SRAM Read ....................................................................... 4
SRAM Write ....................................................................... 4
AutoStore Operation ........................................................ 4
Hardware STORE Operation ............................................ 4
Hardware RECALL (Power-up) ........................................ 5
Software STORE ............................................................... 5
Software RECALL ............................................................. 5
Preventing AutoStore ....................................................... 6
Data Protection ................................................................. 6
Noise Considerations ....................................................... 6
Best Practices ................................................................... 7
Maximum Ratings ............................................................. 8
Operating Range ............................................................... 8
DC Electrical Characteristics .......................................... 8
Data Retention and Endurance ....................................... 9
Capacitance ...................................................................... 9
Thermal Resistance .......................................................... 9
Document Number: 001-54952 Rev. *F
AC Test Conditions .......................................................... 9
AC Switching Characteristics ....................................... 10
AutoStore/Power-up RECALL ....................................... 12
Software Controlled STORE/RECALL Cycle ................ 13
Hardware STORE Cycle ................................................. 14
Truth Table For SRAM Operations ................................ 15
Ordering Information ...................................................... 15
Package Diagrams .......................................................... 16
Acronyms ........................................................................ 17
Document Conventions ................................................. 17
Document History Page ................................................. 18
Sales, Solutions, and Legal Information ...................... 19
SRAM Read Cycle .................................................... 10
SRAM Write Cycle ..................................................... 10
Ordering Code Definition ........................................... 15
Acronyms Used ......................................................... 17
Units of Measure ....................................................... 17
Worldwide Sales and Design Support ....................... 19
Products .................................................................... 19
PSoC Solutions ......................................................... 19
CY14E256LA
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