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Part Name(s) : STK15C88 Cypress
Cypress Semiconductor
Description : 256 Kbit (32K x 8) PowerStore nvSRAM View

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.



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


Part Name(s) : UL634H256 UL634H256SC45 UL634H256SC55 UL634H256SK45 UL634H256SK55 ETC
Unspecified
Description : Low Voltage PowerStore 32K x 8 nvSRAM View

[ZMD]



Description

The UL634H256 has two separate modes of operation: SRAM mode and nonvolatile mode. In SRAM mode, the memory operates as an ordinary static RAM. In nonvolatile operation, data is transferred in parallel from SRAM to EEPROM or from EEPROM to SRAM. In this mode SRAM functions are disabled.



Features

□ High-performance CMOS non volatile static RAM 32768 x 8 bits

□ 45 and 55 ns Access Times

□ 20 and 25 ns Output Enable Access Times

□ ICC = 8 mA at 200 ns Cycle Time

□ Automatic STORE to EEPROM on Power Down using external capacitor

□ Software initiated STORE

□ Automatic STORE Timing

□ 105 STORE cycles to EEPROM

□ 10 years data retention in EEPROM

□ Automatic RECALL on Power Up

□ Software RECALL Initiation

□ Unlimited RECALL cycles from EEPROM

□ Wide voltage range: 2.7 ... 3.6 V

□ Operating temperature ranges: 0 to 70 °C

                                -40 to 85 °C

□ CECC 90000 Quality Standard

□ ESD protection > 2000 V (MIL STD 883C M3015.7-HBM)

□ Packages: SOP32 (300 mil) TSOP32 (Type I)



 


Part Name(s) : U634H256 U634H256SA25 U634H256SA25G1 U634H256SA35 U634H256SA35G1 U634H256SA45 U634H256SA45G1 U634H256SC25 U634H256SC25G1 U634H256SC35 Simtek
Simtek Corporation
Description : PowerStore 32K x 8 nvSRAM View

Description

The U634H256 has two separate modes of operation: SRAM mode and nonvolatile mode. In SRAM mode, the memory operates as an ordinary static RAM. In nonvolatile operation, data is transferred in parallel from SRAM to EEPROM or from EEPROM to SRAM. In this mode SRAM functions are disabled.

The U634H256 is a fast static RAM (25, 35, 45 ns), with a nonvolatile electrically erasable PROM (EEPROM) element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent nonvolatile data resides in EEPROM. Data transfers from the SRAM to the EEPROM (the STORE operation) take place automatically upon power down using charge stored in an external 100 μF capacitor.



Features

□ High-performance CMOS nonvolatile static RAM 32768 x 8 bits

□ 25, 35 and 45 ns Access Times

□ 10, 15 and 20 ns Output Enable

□ Access Times

□ ICC = 15 mA typ. at 200 ns Cycle Time

□ Automatic STORE to EEPROM on Power Down using external capacitor

□ Hardware or Software initiated STORE (STORE Cycle Time < 10 ms)

□ Automatic STORE Timing

□ 106 STORE cycles to EEPROM

□ 100 years data retention in EEPROM

□ Automatic RECALL on Power Up

□ Software RECALL Initiation (RECALL Cycle Time < 20 μs)

□ Unlimited RECALL cycles from EEPROM

□ Single 5 V ± 10 % Operation

□ Operating temperature ranges:

   0 to 70 °C

   -40 to 85 °C

   -40 to125 °C(only 35 ns)

□ QS 9000 Quality Standard

□ ESD protection > 2000 V (MIL STD 883C M3015.7-HBM)

□ RoHS compliance and Pb- free

□ Package: SOP32 (300 mil)



 


Part Name(s) : U634H256 U634H256D1A25 U634H256D1A25G1 U634H256D1A35 U634H256D1A35G1 U634H256D1A45 U634H256D1A45G1 U634H256D1C25 U634H256D1C25G1 U634H256D1C35 ZMD
Zentrum Mikroelektronik Dresden AG
Description : PowerStore 32K x 8 nvSRAM View

Description

The U634H256 has two separate modes of operation: SRAM mode and nonvolatile mode. In SRAM mode, the memory operates as an ordinary static RAM. In nonvolatile operation, data is transferred in parallel from SRAM to EEPROM or from EEPROM to SRAM. In this mode SRAM functions are disabled.

The U634H256 is a fast static RAM (25, 35, 45 ns), with a nonvolatile electrically erasable PROM (EEPROM) element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent nonvolatile data resides in EEPROM. Data transfers from the SRAM to the EEPROM (the STORE operation) take place automatically upon power down using charge stored in an external 100 µF capacitor.



Features

❐ High-performance CMOS non volatile static RAM 32768 x 8 bits

❐ 25, 35 and 45 ns Access Times

❐ 10, 15 and 20 ns Output Enable Access Times

❐ ICC = 15 mA typ. at 200 ns Cycle Time

❐ Automatic STORE to EEPROM on Power Down using external capacitor

❐ Hardware or Software initiated STORE (STORE Cycle Time < 10 ms)

❐ Automatic STORE Timing

❐ 105 STORE cycles to EEPROM

❐ 10 years data retention in EEPROM

❐ Automatic RECALL on Power Up

❐ Software RECALL Initiation (RECALL Cycle Time < 20 µs)

❐ Unlimited RECALL cycles from EEPROM

❐ Single 5 V ± 10 % Operation

❐ Operating temperature ranges:

   0 to 70 °C

   -40 to 85 °C

   -40/-55 to 125 °C (only 35 ns)

❐ QS 9000 Quality Standard

❐ ESD protection > 2000 V (MIL STD 883C M3015.7-HBM)

❐ Packages: SOP32 (300 mil), PDIP32 (600 mil, only C/K-Type)



 



Part Name(s) : STK1744 STK1744-D25 STK1744-D25I STK1744-D35 STK1744-D35I STK1744-D45 STK1744-D45I ETC
Unspecified
Description : nvTime™ 32K x 8 AutoStore™ nvSRAM with Real-Time Clock View

[Simtek]

DESCRIPTION
The Simtek STK1744 DIP module houses 256Kb of nonvolatile static RAM, a real-time clock (RTC) with crystal and a high-value capacitor to support systems that require high reliability and ease of manufacturing. READ and WRITE access to all RTC functions and the memory is the same as a conventional x 8 SRAM. The highest eight addresses of the RAM support clock registers for centuries, years, months, dates, days, hours, minutes and seconds.

FEATURES
• Data Integrity of Simtek nvSRAM Combined with Full-Featured Real-Time Clock
• Stand-Alone Nonvolatile Memory and TimeKeeping Solution—No Other Parts Required
• No Batteries to Fail
• Fast 25ns, 35ns and 45ns Access Times
• Software- and AutoStore™-Controlled Nonvolatile Cycles
• Year 2000 Compliant with Leap Year Compensation
• 24-Hour BCD Format
• 100-Year Data Retention over Full Industrial Temperature Range
• Full 30-Day RTC Operation on Each Power Loss
• Single 5V ± 10% Power Supply

Part Name(s) : STK16C88-3 STK16C88-3WF35 STK16C88-3WF35I ETC1
Unspecified
Description : 32K x 8 AutoStorePlus™ nvSRAM 3.3V QuantumTrap™ CMOS Nonvolatile Static RAM View

DESCRIPTION

The STK16C88-3 is a fast SRAMwith a nonvolatile element incorporated in each static memory cell. The SRAM can be read and written an unlimited number of times, while independent nonvolatile data resides in Nonvolatile Elements. Data transfers from the SRAM to the Nonvolatile Elements (the STORE operation) can take place automatically on power down. An internal capacitor guarantees the STORE operation regardless of power-down slew rate. Transfers from the Nonvolatile Elements to the SRAM(the RECALL operation) take place automatically on restoration of power.



FEATURES

• Transparent Data Save on Power Down

• Internal Capacitor Guarantees AutoStore™ Regardless of Power-Down Slew Rate

• Directly Replaces 32K x 8 Static RAM, Battery-Backed RAM or EEPROM

• 35 Access Time

• STOREto Nonvolatile Elements Initiated by Software or AutoStorePlus™

• RECALLto SRAM Initiated by Software or Power Restore

• 10mA Typical ICC at 200ns Cycle Time

• Unlimited READ, WRITE and RECALLCycles

• 1,000,000 STORECycles to Nonvolatile Elements (Commercial/Industrial)

• 100-Year Data Retention in nonvolatile elements (Commercial/Industrial)

• Single 3.3V +0.3V Operation

• Commercial and Industrial Temperatures

• 28-Pin PDIP Package


Part Name(s) : STK15C68-NF45ITR STK15C68-NF45 STK15C68-NF45TR STK15C68-NF25 STK15C68-NF25I STK15C68-NF25ITR STK15C68-NF45I Simtek
Simtek Corporation
Description : 32Kx8 PowerStore nvSRAM View

DESCRIPTION
The Simtek STK15C88 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.

FEATURES
• 25, 45 ns Read Access & R/W Cycle Time
• Unlimited Read/Write Endurance
• Pin compatible with industry standard SRAMs
• Automatic Non-volatile STORE on Power Loss
• Automatic RECALL to SRAM on Power Up
• Non-Volatile STORE or RECALL under Software Control
• Unlimited RECALL Cycles
• 1 Million Store Cycles
• 100-Year Non-volatile Data Retention
• Single 5V ± 10% Power Supply
• Commercial and Industrial Temperatures
• 28-pin 300-mil and 330 mil SOIC Packages (RoHS-Compliant)

Part Name(s) : U635H16 U635H16DC25 U635H16DC25G1 U635H16DC35 U635H16DC35G1 U635H16DC45 U635H16DC45G1 U635H16DK25 U635H16DK25G1 U635H16DK35 Simtek
Simtek Corporation
Description : PowerStore 2K x 8 nvSRAM View

Description
The U635H16 has two separate modes of operation: SRAM mode and nonvolatile mode. In SRAM mode, the memory operates as an ordinary static RAM. In nonvolatile operation, data is transferred in parallel from SRAM to EEPROM or from EEPROM to SRAM. In this mode SRAM functions are disabled.

• High-performance CMOS nonvolatile static RAM 2048 x 8 bits
• 25, 35 and 45 ns Access Times
• 12, 20 and 25 ns Output Enable Access Times
• ICC = 15 mA at 200 ns Cycle Time
• Automatic STORE to EEPROM on Power Down using system capacitance
• Software initiated STORE (STORE Cycle Time < 10 ms)
• Automatic STORE Timing
• 106 STORE cycles to EEPROM
• 100 years data retention in EEPROM
• Automatic RECALL on Power Up
• Software RECALL Initiation (RECALL Cycle Time < 20 μs)
• Unlimited RECALL cycles from EEPROM
• Single 5 V ± 10 % Operation
• Operating temperature ranges: 0 to 70 °C -40 to 85 °C
• QS 9000 Quality Standard
• ESD protection > 2000 V (MIL STD 883C M3015.7-HBM)
• RoHS compliance and Pb- free
• Packages:PDIP24 (600 mil) SOP24 (300 mil) Features

Part Name(s) : STK15C68 STK15C88-NF25ITR STK15C88-NF25I STK15C88-SF25ITR STK15C88-SF25I STK15C88-NF45TR STK15C88-NF45 STK15C88-NF45ITR STK15C88-NF45I STK15C88-SF45ITR Cypress
Cypress Semiconductor
Description : 256 Kbit (32K x 8) PowerStore nvSRAM View

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.

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

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