Functional Description
The Cypress STK15C88 is a 256Kb fast static RAM with a nonvolatile element in each memory cell. The embedded nonvolatile elements incorporate QuantumTrap™ technology producing the world’s most reliable nonvolatile memory. The SRAM provides unlimited read and write cycles, while independent, nonvolatile data resides in the highly reliable QuantumTrap cell. Data transfers from the SRAM to the nonvolatile elements (the STORE operation) takes place automatically at power down. On power up, data is restored to the SRAM (the RECALL operation) from the nonvolatile memory. Both the STORE and RECALL operations are also available under software control.
PowerStore nvSRAM products depend on the intrinsic system capacitance to maintain system power long enough for an automatic store on power loss. If the power ramp from 5 volts to 3.6 volts is faster than 10 ms, consider our 14C88 or 16C88 for more reliable operation.

Features
*25 ns and 45 ns access times
*Pin compatible with industry standard SRAMs
*Automatic nonvolatile STORE on power loss
*Nonvolatile STORE under Software control
*Automatic RECALL to SRAM on power up
*Unlimited Read/Write endurance
*Unlimited RECALL cycles
*1,000,000 STORE cycles
*100 year data retention
*Single 5V+10% power supply
*Commercial and Industrial Temperatures
*28-pin (300 mil and 330 mil) SOIC packages
*RoHS compliance

STK15C88-NF25TR, STK15C88-NF25, STK15C88-NF45TR, STK15C88-NF45

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Description
The Cypress STK17TA8 combines a 1 Mb nonvolatile static RAM (nvSRAM) with a full featured real time clock in a reliable, monolithic integrated circuit.
The 1 Mb nvSRAM is a fast static RAM with a nonvolatile Quantum Trap storage element included with each memory cell.
The SRAM provides the fast access and cycle times, ease of use and unlimited read and write endurance of a normal SRAM. Data transfers automatically to the nonvolatile storage cells when power loss is detected (the STORE operation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control.
The real time clock function provides an accurate clock with leap year tracking and a programmable, high accuracy oscillator. The Alarm function is programmable for one-time alarms or periodic minutes, hours, or days alarms. There is also a programmable watchdog timer for processor control.

Features
*nvSRAM Combined with Integrated Real Time Clock Functions (RTC, Watchdog Timer, Clock Alarm, Power Monitor)
*Capacitor or Battery Backup for RTC
*25, 45 ns Read Access and Read/Write Cycle Time
*Unlimited Read/Write Endurance
*Automatic nonvolatile STORE on Power Loss
*Nonvolatile STORE Under Hardware or Software Control
*Automatic RECALL to SRAM on Power Up
*Unlimited RECALL Cycles
*200K STORE Cycles
*20-Year nonvolatile Data Retention
*Single 3 V +20%, -10% Power Supply
*Commercial and Industrial Temperatures
*48-pin 300-mil SSOP Package (RoHS-Compliant)

STK17TA8-RF25, STK17TA8-RF45, STK17TA8-RF25TR, STK17TA8-RF45TR
TAG Clock, nvsram

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DESCRIPTION
The Simtek STK14D88 is a 256Kb fast static RAM with a non-volatile Quantum Trap storage element included with each memory cell.
The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM.
Data transfers automatically to the non-volatile storage cells when power loss is detected (the STOREoperation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control.
The Simtek nvSRAM is the first monolithic non-volatile memory to offer unlimited writes and reads. It is the highest performance, most reliable non-volatile memory available.

FEATURES
*25, 35, 45 ns Read Access & R/W Cycle Time
*Unlimited Read/Write Endurance
*Automatic Non-volatile STORE on Power Loss
*Non-Volatile STORE Under Hardware or Software Control
*Automatic RECALL to SRAM on Power Up
*Unlimited RECALL Cycles
*200K STORE Cycles
*20-Year Non-volatile Data Retention
*Single 3V +20%, -10% Power Supply
*Commercial, Industrial Temperatures
*Small Footprint SOIC & SSOP Packages (RoHS-Compliant

STK14D88-NF45ITR, STK14D88-RF45ITR, STK14D88-NF35ITR

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DESCRIPTION
The Simtek STK14C88-3 is a 256Kb fast static RAM with a non-volatile Quantum Trap storage element included with each memory cell.
The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM.
Data transfers automatically to the non-volatile storage cells when power loss is detected (the STORE operation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control.
The Simtek nvSRAM is the first monolithic non-volatile memory to offer unlimited writes and reads. It is the highest performance, most reliable non-volatile memory available.

FEATURES
*35, 45 ns Read Access & R/W Cycle Time
*Unlimited Read/Write Endurance
*Automatic Non-volatile STORE on Power Loss
*Non-Volatile STORE Under Hardware or Software Control
*Automatic RECALL to SRAM on Power Up
*Unlimited RECALL Cycles
*1 Million STORE Cycles
*100-Year Non-volatile Data Retention
*Single 3.3V +0.3V Power Supply
*Commercial and Industrial Temperatures
*32-Pin 300 mil SOIC and 600 mil PDIP Packages (RoHS-Compliant)

STK14C88-3WF35, STK14C88-3WF45, STK14C88-3NF35, STK14C88-3NF45
TAG nvsram

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DESCRIPTION
The Simtek STK14CA8 is a 1Mb fast static RAM with a non-volatile Quantum Trap storage element included with each memory cell.
The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM.
Data transfers automatically to the non-volatile storage cells when power loss is detected (the STOREoperation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control.
The Simtek nvSRAM is the first monolithic non-volatile memory to offer unlimited writes and reads. It is the highest performance, most reliable non-volatile memory available.

FEATURES
*25, 35, 45 ns Read Access & R/W Cycle Time
*Unlimited Read/Write Endurance
*Automatic Non-volatile STORE on Power Loss
*Non-Volatile STORE Under Hardware or Software Control
*Automatic RECALL to SRAM on Power Up
*Unlimited RECALL Cycles
*200K STORE Cycles
*20-Year Non-volatile Data Retention
*Single 3.0V + 20%, -10% Operation
*Commercial and Industrial Temperatures
*Small Footprint SOIC & SSOP Packages (RoHS-Compliant)

STK14CA8-NF35, STK14CA8-NF45, STK14CA8-NF25TR, STK14CA8-NF35TR, STK14CA8-NF45TR

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DESCRIPTION
The Simtek STK14C88 is a 256Kb fast static RAM with a non-volatile Quantum Trap storage element included with each memory cell.
The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM.
Data transfers automatically to the non-volatile storage cells when power loss is detected (the STORE operation). On power up, data is automatically restored to the SRAM (the RECALL operation). Both STORE and RECALL operations are also available under software control.
The Simtek nvSRAM is the first monolithic non-volatile memory to offer unlimited writes and reads. It is the highest performance, most reliable non-volatile memory available.

FEATURES
*25, 35, 45 ns Read Access & R/W Cycle Time
*Unlimited Read/Write Endurance
*Automatic Non-volatile STORE on Power Loss
*Non-Volatile STORE Under Hardware or Software Control
*Automatic RECALL to SRAM on Power Up
*Unlimited RECALL Cycles
*1 Million STORE Cycles
*100-Year Non-volatile Data Retention
*Single 5V +10% Power Supply
*Commercial, Industrial, Military Temperatures
*32-Pin 300 mil SOIC (RoHS-Compliant)
*32-pin CDIP and LCC Packages

STK14C88NF25ITR, STK14C88CF25ITR, STK14C88LF25ITR

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DESCRIPTION
 The Simtek STK14EC16 is a 4MB fast static RAM with a non-volatile Quantum Trap storage element included with each memory cell.
The SRAM provides the fast access & cycle times, ease of use and unlimited read & write endurance of a normal SRAM.
Data transfers automatically to the non-volatile storage cells when power loss is detected (the STOREoperation).
On power up, data is automatically restored to the SRAM (the RECALL operation).
Both STORE and RECALL operations are also available under software control.
The Simtek nvSRAM is the highest performance, most reliable non-volatile memory available.

FEATURES
* 15, 25, 45 ns Read Access and R/W Cycle Time
* Unlimited Read/Write Endurance
* Automatic Non-volatile STORE on Power Loss
* Non-Volatile STORE Under Hardware or Software Control
* Automatic RECALL to SRAM on Power Up
* Unlimited RECALL Cycles
* 200K STORE Endurance
* 20-Year Non-volatile Data Retention
* Single 3.0V +20%, -10% Operation
* Commercial, Industrial Temperatures
* 44-pin or 54-pin 400-mil TSOPII Packages (RoHS-Compliant)
* 48-ball Fine Pitch Ball Grid Array (FBGA)

2TK14EC16-TF15
STK14EC16-TF15TR
STK14EC16-TF25
STK14EC16-TF25TR

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