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
Description........................................................................... 1
Logic Block Diagram........................................................... 1
Contents ............................................................................... 2
Pin Configurations .............................................................. 3
Pin Descriptions .................................................................. 3
Absolute Maximum Ratings ............................................... 4
DC Characteristics .............................................................. 4
AC Test Conditions ............................................................. 5
Capacitance ......................................................................... 5
SRAM Read Cycles #1 and #2 ............................................ 6
SRAM Write Cycle #1 and #2 .............................................. 7
Hardware Mode Selection................................................... 8
Hardware STORE Cycle ...................................................... 8
AutoStore/Power up RECALL ............................................ 9
nvSRAM Operation............................................................ 10
Noise Considerations........................................................ 10
SRAM Read ........................................................................ 10
Document Number: 001-52038 Rev. *B
SRAM Write ........................................................................ 10
Power Up RECALL ............................................................ 10
Software Nonvolatile STORE............................................ 10
Software Nonvolatile RECALL ......................................... 10
AutoStore Mode................................................................. 10
AutoStore INHIBIT Mode................................................... 11
HSB Operation ................................................................... 11
Best Practices.................................................................... 12
Preventing STORES .......................................................... 12
Hardware Protect............................................................... 12
Low Average Active Power............................................... 12
Software STORE/RECALL Mode Selection ..................... 14
Software-Controlled STORE/RECALL Cycle................... 14
Ordering Information......................................................... 15
Document History Page .................................................... 19
Sales, Solutions, and Legal Information ......................... 19
Worldwide Sales and Design Support.......................... 19
Products ....................................................................... 19
STK14C88
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