STK14C88-NF25I Cypress Semiconductor Corp, STK14C88-NF25I Datasheet - Page 2

• Manufacturer Part Number: STK14C88-NF25I
• Description: IC NVSRAM 256KBIT 25NS 32SOIC
• Manufacturer: Cypress Semiconductor Corp
• Type: NVSRAMr

Specifications of STK14C88-NF25I

• Format - Memory: RAM
• Memory Type: NVSRAM (Non-Volatile SRAM)
• Memory Size: 256K (32K x 8)
• Speed: 25ns
• Interface: Parallel
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-SOIC (7.5mm Width)
• Word Size: 8b
• Organization: 32Kx8
• Density: 256Kb
• Interface Type: Parallel
• Access Time (max): 25ns
• 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: 100mA
• 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. *B
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
Page 2 of 17
[+] Feedback
[+] Feedback
[+] Feedback