STK14C88-3WF45 Cypress Semiconductor Corp, STK14C88-3WF45 Datasheet - Page 2

• Manufacturer Part Number: STK14C88-3WF45
• Description: IC NVSRAM 256KBIT 45NS 32DIP
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK14C88-3WF45

• 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: 0°C ~ 70°C
• Package / Case: 32-DIP (0.600", 15.24mm)
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 45ns
• Operating Supply Voltage (typ): 3.3V
• Package Type: PDIP
• Operating Temperature Classification: Commercial
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Operating Temp Range: 0C to 70C
• Pin Count: 32
• Mounting: Through Hole
• Supply Current: 42mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Contents
Features................................................................................ 1
Functional Description........................................................ 1
Logic Block Diagram........................................................... 1
Contents ............................................................................... 2
Pin Configurations .............................................................. 3
Device Operation ................................................................. 4
SRAM Read .......................................................................... 4
SRAM Write .......................................................................... 4
AutoStore Operation ........................................................... 4
AutoStore Inhibit Mode ....................................................... 4
Hardware STORE (HSB) Operation.................................... 5
Hardware RECALL (Power Up)........................................... 5
Software STORE .................................................................. 5
Software RECALL................................................................ 6
Preventing STORE............................................................... 6
Hardware Protect................................................................. 6
Noise Considerations.......................................................... 6
Low Average Active Power................................................. 6
Best Practices...................................................................... 7
Maximum Ratings................................................................ 8
DC Electrical Characteristics ............................................. 8
Document Number: 001-50592 Rev. *A
Data Retention and Endurance .......................................... 9
Capacitance ......................................................................... 9
Thermal Resistance............................................................. 9
AC Test Conditions ............................................................. 9
AC Switching Characteristics ........................................... 10
Switching Waveforms ....................................................... 10
Switching Waveforms ....................................................... 11
AutoStore or Power Up RECALL ..................................... 12
Switching Waveforms ....................................................... 12
Software Controlled STORE/RECALL Cycle................... 13
Switching Waveforms ....................................................... 13
Hardware STORE Cycle .................................................... 14
Switching Waveforms ........................................................ 14
Part Numbering Nomenclature.......................................... 15
Ordering Information......................................................... 15
Package Diagrams............................................................. 16
Document History Page ..................................................... 17
Sales, Solutions and Legal Information .......................... 17
SRAM Read Cycle ....................................................... 10
Worldwide Sales and Design Support.......................... 17
Products ....................................................................... 17
STK14C88-3
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