STK16C88-3WF35I

STK16C88-3WF35I Datasheet

STK16C88-3

Part	Datasheet
STK16C88-3WF35I	STK16C88-3WF35I (pdf)

Related Parts	Information
STK16C88-3WF35	STK16C88-3WF35

PDF Datasheet Preview
STK16C88-3 256 Kbit 32K x 8 AutoStore+ nvSRAM Functional Description • Fast 35 ns Read Access and R/W Cycle Time The Cypress STK16C88-3 is a 256Kb fast static RAM with a nonvolatile element in each memory cell. The embedded • Directly replaces Battery-backed SRAM Modules such as Dallas/Maxim DS1230W • Automatic Nonvolatile STORE on Power Loss ly. • Nonvolatile STORE under Software Control on • Automatic RECALL to SRAM on power up s • Unlimited Read/Write Endurance m • 1,000,000 STORE Cycles ra • 100 year Data Retention og • Single 3.3V+0.3V Power Supply pr • Commercial and Industrial Temperatures n • 28-pin 600 mil PDIP package tio • RoHS Compliance 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. NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.produc Logic Block Diagram • San Jose, CA 95134-1709 • 408-943-2600 [+] Feedback STK16C88-3 Contents Features 1 Maximum Ratings 7 Functional Description 1 DC Electrical Characteristics 7 Logic Block Diagram 1 Data Retention and Endurance 7 Contents 2 Capacitance 8 Pin Configurations 3 Device Operation 4 ly SRAM Read 4 n SRAM Write 4 o AutoStore+ Operation 4 s Hardware RECALL Power Up 4 m Software STORE 4 ra Software RECALL 4 og Hardware Protect 5 r Noise Considerations 5 p Low Average Active Power 5 NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.production Best Practices Thermal Resistance 8 AC Test Conditions 8 AC Switching Characteristics 9 SRAM Read Cycle 9 Switching Waveforms 9 AutoStorePlus or Power Up RECALL 11 Software Controlled STORE/RECALL Cycle 12 Part Numbering Nomenclature 13 Ordering Information 13 Package Diagrams 14 Sales, Solutions and Legal Information 15 Worldwide Sales and Design Support.......................... 15 Products 15 Page 2 of 15 [+] Feedback STK16C88-3 Pin Configurations Figure Pin Diagram - 28-Pin PDIP tion u 966 723 esigngs prod Table Pin Definitions - 28-Pin PDIP d in Pin Name Alt I/O Type ew go r n on DQ0-DQ7 Input Input or Output Address Inputs. Used to select one of the 32,768 bytes of the nvSRAM. Bidirectional Data I/O lines. Used as input or output lines depending on operation. d fo ort WE Input Write Enable Input, Active LOW. When the chip is enabled and WE is LOW, data on the I/O pins is written to the specific address location. de upp CE Input Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip. men to s OE Input Output Enable, Active LOW. The active LOW OE input enables the data output buffers during read cycles. Deasserting OE HIGH causes the I/O pins to tristate. m n VSS Ground for the Device. The device is connected to ground of the system. NoItnrepcrooductio VCC Power Supply Power Supply Inputs to the Device. Page 3 of 15 [+] Feedback STK16C88-3 Device Operation If the STK16C88-3 is in a WRITE state at the end of power up RECALL, the SRAM data is corrupted. To help avoid this The AutoStore+ STK16C88-3 is a fast 32K x 8 SRAM that situation, a 10 Kohm resistor is connected either between WE does not lose its data on power down. The data is preserved and system VCC or between CE and system VCC. in integral QuantumTrap non-volatile storage elements when power is lost. Automatic STORE on power down and Software STORE automatic RECALL on power up guarantee data integrity without the use of batteries. Data is transferred from the SRAM to the nonvolatile memory by a software address sequence. The STK16C88-3 software ction Ordering Information s. du These parts are not recommended for new designs. They are in production to support ongoing production programs only. ign ro Speed s p ns de ing 35 Ordering Code STK16C88-3WF35 STK16C88-3WF35I Package Diagram 51-85017 Package Type 28-pin PDIP Operating Range Commercial Industrial NoItnrepcroodmumcteionndetod sfourpnpeowrt ongo All parts are Pb-free. The above table contains Final information. Please contact your local Cypress sales representative for availability of these parts Page 13 of 15 [+] Feedback Package Diagram Figure 28-Pin 600 Mil PDIP 51-85017 STK16C88-3 NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs. production programs 51-85017 only. Page 14 of 15 [+] Feedback STK16C88-3 Document History Page Document Title STK16C88-3 256 Kbit 32K x 8 AutoStore+ nvSRAM Document Number 001-50594 ECN No. Orig. of Change Submission Date Description of Change 2625096 GVCH/PYRS 12/19/08 New data sheet only. *A 2826441 GVCH 12/11/2009 Added following text in the Ordering Information section “These parts are not recommended for new designs. In production to support ongoing production programs only.” Added watermark in PDF stating “Not recommended for new designs. In production to support ongoing production programs only.” Added Contents on page Sales, Solutions and Legal Information grams Worldwide Sales and Design Support ro Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office p closest to you, visit us at cypress.com/sales. n Products tio PSoC c Clocks & Buffers s. du Wireless ign ro Memories s p Image Sensors e g USB psoc.cypress.com clocks.cypress.com wireless.cypress.com memory.cypress.com image.cypress.com psoc.cypress.com/usb ecommcteionndetod sfourpnpeowrt odngoin Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for r u medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as t d critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems o application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. N r Any Source Code software and/or firmware is owned by Cypress Semiconductor Corporation Cypress and is protected by and subject to worldwide patent protection United States and foreign , p United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress In integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. All products and company names mentioned in this document may be the trademarks of their respective holders. Page 15 of 15 [+] Feedback

PDF Datasheet Preview

STK16C88-3
256 Kbit 32K x 8 AutoStore+ nvSRAM

Functional Description
• Fast 35 ns Read Access and R/W Cycle Time

The Cypress STK16C88-3 is a 256Kb fast static RAM with a
nonvolatile element in each memory cell. The embedded
• Directly replaces Battery-backed SRAM Modules such as Dallas/Maxim DS1230W
• Automatic Nonvolatile STORE on Power Loss
ly.
• Nonvolatile STORE under Software Control on
• Automatic RECALL to SRAM on power up s
• Unlimited Read/Write Endurance m
• 1,000,000 STORE Cycles ra
• 100 year Data Retention og
• Single 3.3V+0.3V Power Supply pr
• Commercial and Industrial Temperatures n
• 28-pin 600 mil PDIP package tio
• RoHS Compliance
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.

NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.produc Logic Block Diagram
• San Jose, CA 95134-1709
• 408-943-2600
[+] Feedback

STK16C88-3

Contents

Features 1

Maximum Ratings 7

Functional Description 1

DC Electrical Characteristics 7

Logic Block Diagram 1

Data Retention and Endurance 7

Contents 2

Capacitance 8

Pin Configurations 3

Device Operation 4 ly SRAM Read 4 n SRAM Write 4 o AutoStore+ Operation 4 s Hardware RECALL Power Up 4 m Software STORE 4 ra Software RECALL 4 og Hardware Protect 5 r Noise Considerations 5 p Low Average Active Power 5 NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.production Best Practices

Thermal Resistance 8 AC Test Conditions 8 AC Switching Characteristics 9
SRAM Read Cycle 9 Switching Waveforms 9 AutoStorePlus or Power Up RECALL 11 Software Controlled STORE/RECALL Cycle 12 Part Numbering Nomenclature 13 Ordering Information 13 Package Diagrams 14 Sales, Solutions and Legal Information 15

Worldwide Sales and Design Support.......................... 15 Products 15

Page 2 of 15 [+] Feedback

STK16C88-3

Pin Configurations

Figure Pin Diagram - 28-Pin PDIP
tion
u 966
723
esigngs prod Table Pin Definitions - 28-Pin PDIP
d in Pin Name Alt

I/O Type
ew go r n on DQ0-DQ7

Input

Input or Output

Address Inputs. Used to select one of the 32,768 bytes of the nvSRAM. Bidirectional Data I/O lines. Used as input or output lines depending on operation.
d fo ort WE

Input

Write Enable Input, Active LOW. When the chip is enabled and WE is LOW, data on the I/O pins is written to the specific address location.
de upp CE

Input

Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip.
men to s OE

Input

Output Enable, Active LOW. The active LOW OE input enables the data output buffers during read cycles. Deasserting OE HIGH causes the I/O pins to tristate.
m n VSS

Ground for the Device. The device is connected to ground of the system.

NoItnrepcrooductio VCC

Power Supply Power Supply Inputs to the Device.

Page 3 of 15 [+] Feedback

STK16C88-3

Device Operation

If the STK16C88-3 is in a WRITE state at the end of power up

RECALL, the SRAM data is corrupted. To help avoid this

The AutoStore+ STK16C88-3 is a fast 32K x 8 SRAM that situation, a 10 Kohm resistor is connected either between WE
does not lose its data on power down. The data is preserved and system VCC or between CE and system VCC.
in integral QuantumTrap non-volatile storage elements when
power is lost. Automatic STORE on power down and Software STORE
automatic RECALL on power up guarantee data integrity
without the use of batteries.

Data is transferred from the SRAM to the nonvolatile memory by a software address sequence. The STK16C88-3 software
ction Ordering Information
s. du These parts are not recommended for new designs. They are in production to support ongoing production programs only.
ign ro Speed s p ns de ing 35
Ordering Code STK16C88-3WF35 STK16C88-3WF35I

Package Diagram 51-85017

Package Type 28-pin PDIP

Operating Range

Commercial

Industrial

NoItnrepcroodmumcteionndetod sfourpnpeowrt ongo All parts are Pb-free. The above table contains Final information. Please contact your local Cypress sales representative for availability of these parts

Page 13 of 15 [+] Feedback

Package Diagram

Figure 28-Pin 600 Mil PDIP 51-85017

STK16C88-3

NoItnrepcroodmumcteionndetod
sfourpnpeowrt
odnegsoiginngs.
production
programs
51-85017
only.

Page 14 of 15 [+] Feedback

STK16C88-3

Document History Page

Document Title STK16C88-3 256 Kbit 32K x 8 AutoStore+ nvSRAM Document Number 001-50594

ECN No.

Orig. of Change

Submission Date

Description of Change
2625096 GVCH/PYRS
12/19/08 New data sheet
only. *A
2826441

GVCH
12/11/2009
Added following text in the Ordering Information section “These parts are not recommended for new designs. In production to support ongoing production programs only.” Added watermark in PDF stating “Not recommended for new designs. In production to support ongoing production programs only.” Added Contents on page

Sales, Solutions and Legal Information grams Worldwide Sales and Design Support ro Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office p closest to you, visit us at cypress.com/sales.
n Products tio PSoC c Clocks & Buffers s. du Wireless ign ro Memories s p Image Sensors e g USB
psoc.cypress.com clocks.cypress.com wireless.cypress.com memory.cypress.com image.cypress.com psoc.cypress.com/usb
ecommcteionndetod sfourpnpeowrt odngoin Cypress Semiconductor Corporation, The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of
any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for
r u medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as t d critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems o application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. N r Any Source Code software and/or firmware is owned by Cypress Semiconductor Corporation Cypress and is protected by and subject to worldwide patent protection United States and foreign , p United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of,
and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress

In integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without
the express written permission of Cypress.

Disclaimer CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

Use may be limited by and subject to the applicable Cypress software license agreement.

All products and company names mentioned in this document may be the trademarks of their respective holders.

Page 15 of 15
[+] Feedback

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived STK16C88-3WF35I Datasheet file may be downloaded here without warranties.

Datasheet ID: STK16C88-3WF35I 508343