STK16C88-WF45I

STK16C88-WF45I Datasheet

STK16C88

Part	Datasheet
STK16C88-WF45I	STK16C88-WF45I (pdf)

Related Parts	Information
STK16C88-WF25	STK16C88-WF25
STK16C88-WF25I	STK16C88-WF25I
STK16C88-WF45	STK16C88-WF45

PDF Datasheet Preview
STK16C88 256 Kbit 32K x 8 AutoStore+ nvSRAM Functional Description • 25 ns and 45 ns access times The Cypress STK16C88 is a 256 Kb fast static RAM with a • Directly replaces battery-backed SRAM modules such as Dallas/Maxim DS1230 AB nonvolatile element in each memory cell. The embedded nonvolatile elements incorporate QuantumTrap technology producing the world’s most reliable nonvolatile memory. The • Automatic nonvolatile STORE on power loss • Nonvolatile STORE under Software control 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 • Automatic RECALL to SRAM on power up nonvolatile elements the STORE operation takes place automatically at power down. On power up, data is restored to • Unlimited Read/Write endurance the SRAM the RECALL operation from the nonvolatile • Unlimited RECALL cycles • 1,000,000 STORE cycles ms • 100 year data retention gra • Single 5V+10% power supply pro • Commercial and Industrial Temperatures tion • 28-pin 600 mil PDIP package c • RoHS compliance NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs produ Logic Block Diagram memory. Both the STORE and RECALL operations are also available under software control. • San Jose, CA 95134-1709 • 408-943-2600 [+] Feedback STK16C88 Contents 1 DC Electrical Characteristics 7 Functional 1 Data Retention and Endurance 7 Logic Block 1 Capacitance 8 Contents 2 Thermal 8 Pin Configurations 3 AC Test Conditions 8 Device Operation 4 AC Switching Characteristics 9 SRAM Read 4 Switching Waveforms 9 SRAM Write 4 AutoStore or Power Up RECALL 11 AutoStore+ Operation 4 Software Controlled STORE/RECALL Cycle................... 12 Hardware RECALL Power 4 Part Numbering Nomenclature Software STORE 4 Software 4 ms Hardware 5 ra Noise 5 rog Low Average Active 5 p Best 5 NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.production Maximum 7 Commercial and Industrial 13 Ordering 13 Package 14 Sales, Solutions and Legal Information 15 Worldwide Sales and Design Support 15 Products 15 Page 2 of 15 [+] Feedback STK16C88 Pin Configurations Figure Pin Diagram - 28-Pin PDIP 723 tion uc 966 w desoiginngs prod Table Pin Definitions - 28-Pin PDIP ne ng Pin Name Alt for rt o ed po DQ0-DQ7 mend to sup WE com tion CE ot re oduc OE N In pr VSS I/O Type Input Input or Output Input Input Input Ground Description 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. 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. Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip. 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. Ground for the Device. The device is connected to ground of the system. Power Supply Power Supply Inputs to the Device. Page 3 of 15 [+] Feedback STK16C88 Device Operation If the STK16C88 is in a WRITE state at the end of power up RECALL, the SRAM data is corrupted. To help avoid this The AutoStore+ STK16C88 is a fast 32K x 8 SRAM that does situation, a 10 Kohm resistor is connected either between WE not lose its data on power down. The data is preserved in and system VCC or between CE and system VCC. integral QuantumTrap nonvolatile 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 software SRAM Read STORE cycle is initiated by executing sequential CE controlled READ cycles from six specific address locations in exact The STK16C88 performs a READ cycle whenever CE and OE order. During the STORE cycle, an erase of the previous are LOW while WE is HIGH. The address specified on pins nonvolatile data is first performed followed by a program of the determines the 32,768 data bytes accessed. When the READ is initiated by an address transition, the outputs are ction pro Ordering Information ns. odu These parts are not recommended for new designs. They are in production to support ongoing production programs only. sig pr Speed e g ns w d oin 25 ne ng 45 Ordering Code STK16C88-WF25I STK16C88-WF45 Package Diagram 51-85017 51-85017 Package Type 28-pin PDIP 28-pin PDIP Operating Range Industrial Commercial NoItnrepcroodmumcteionndetod sfourpport o 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 NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.production programs. 51-85017 *D Page 14 of 15 [+] Feedback STK16C88 Document History Page Document Title STK16C88 256 Kbit 32K x 8 AutoStore+ nvSRAM Document Number 001-50595 ECN No. Orig. of Change Submission Date Description of Change 2625096 GVCH/PYRS 12/19/08 New data sheet 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 3052511 GVCH 10/08/10 Removed the following inactive parts STK16C88-WF25, STK16C88-WF45I Updated package diagram ams. Sales, Solutions and Legal Information ogr Worldwide Sales and Design Support pr Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office tion closest to you, visit us at cypress.com/sales. uc Products ns od PSoC sig pr Clocks & Buffers de ing Wireless ew go Memories r n on Image Sensors NoItnrepcroodmumcteionndetod sfoupport USB psoc.cypress.com clocks.cypress.com wireless.cypress.com memory.cypress.com image.cypress.com psoc.cypress.com/usb 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 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 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 application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. 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 , 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 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
256 Kbit 32K x 8 AutoStore+ nvSRAM

Functional Description
• 25 ns and 45 ns access times

The Cypress STK16C88 is a 256 Kb fast static RAM with a
• Directly replaces battery-backed SRAM modules such as Dallas/Maxim DS1230 AB
nonvolatile element in each memory cell. The embedded nonvolatile elements incorporate QuantumTrap technology producing the world’s most reliable nonvolatile memory. The
• Automatic nonvolatile STORE on power loss
• Nonvolatile STORE under Software control

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
• Automatic RECALL to SRAM on power up
nonvolatile elements the STORE operation takes place automatically at power down. On power up, data is restored to
• Unlimited Read/Write endurance
the SRAM the RECALL operation from the nonvolatile
• Unlimited RECALL cycles
• 1,000,000 STORE cycles ms
• 100 year data retention gra
• Single 5V+10% power supply pro
• Commercial and Industrial Temperatures tion
• 28-pin 600 mil PDIP package c
• RoHS compliance NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs produ Logic Block Diagram
memory. Both the STORE and RECALL operations are also available under software control.
• San Jose, CA 95134-1709
• 408-943-2600
[+] Feedback

STK16C88

Contents
1 DC Electrical Characteristics 7

Functional 1 Data Retention and Endurance 7

Logic Block 1 Capacitance 8

Contents 2 Thermal 8

Pin Configurations 3 AC Test Conditions 8

Device Operation 4 AC Switching Characteristics 9

SRAM Read 4 Switching Waveforms 9

SRAM Write 4 AutoStore or Power Up RECALL 11

AutoStore+ Operation 4 Software Controlled STORE/RECALL Cycle................... 12

Hardware RECALL Power 4 Part Numbering Nomenclature

Software STORE 4

Software 4 ms Hardware 5 ra Noise 5 rog Low Average Active 5 p Best 5 NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.production Maximum 7
Commercial and Industrial 13 Ordering 13 Package 14 Sales, Solutions and Legal Information 15

Worldwide Sales and Design Support 15 Products 15

Page 2 of 15 [+] Feedback

STK16C88

Pin Configurations

Figure Pin Diagram - 28-Pin PDIP
723
tion
uc 966
w desoiginngs prod Table Pin Definitions - 28-Pin PDIP
ne ng Pin Name Alt for rt o ed po DQ0-DQ7
mend to sup WE
com tion CE
ot re oduc OE

N In pr VSS

I/O Type Input

Input or Output Input

Input

Input

Ground

Description 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.

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. Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip. 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. Ground for the Device. The device is connected to ground of the system.

Power Supply Power Supply Inputs to the Device.

Page 3 of 15 [+] Feedback

STK16C88

Device Operation

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

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

The AutoStore+ STK16C88 is a fast 32K x 8 SRAM that does situation, a 10 Kohm resistor is connected either between WE
not lose its data on power down. The data is preserved in and system VCC or between CE and system VCC.
integral QuantumTrap nonvolatile 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 software

SRAM Read

STORE cycle is initiated by executing sequential CE controlled

READ cycles from six specific address locations in exact

The STK16C88 performs a READ cycle whenever CE and OE order. During the STORE cycle, an erase of the previous
are LOW while WE is HIGH. The address specified on pins nonvolatile data is first performed followed by a program of the
determines the 32,768 data bytes accessed. When the READ is initiated by an address transition, the outputs are
ction pro Ordering Information
ns. odu These parts are not recommended for new designs. They are in production to support ongoing production programs only.
sig pr Speed e g ns w d oin 25 ne ng 45
Ordering Code

STK16C88-WF25I STK16C88-WF45

Package Diagram
51-85017 51-85017

Package Type
28-pin PDIP 28-pin PDIP

Operating Range

Industrial

Commercial

NoItnrepcroodmumcteionndetod sfourpport o 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

NoItnrepcroodmumcteionndetod sfourpnpeowrt odnegsoiginngs.production programs.
51-85017 *D

Page 14 of 15 [+] Feedback

STK16C88

Document History Page

Document Title STK16C88 256 Kbit 32K x 8 AutoStore+ nvSRAM Document Number 001-50595

ECN No.

Orig. of Change

Submission Date

Description of Change
2625096 GVCH/PYRS 12/19/08 New data sheet
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
3052511

GVCH
10/08/10 Removed the following inactive parts STK16C88-WF25,

STK16C88-WF45I

Updated package diagram
ams. Sales, Solutions and Legal Information
ogr Worldwide Sales and Design Support pr Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office tion closest to you, visit us at cypress.com/sales.
uc Products ns od PSoC sig pr Clocks & Buffers de ing Wireless ew go Memories r n on Image Sensors NoItnrepcroodmumcteionndetod sfoupport USB
psoc.cypress.com clocks.cypress.com wireless.cypress.com memory.cypress.com image.cypress.com psoc.cypress.com/usb

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 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 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 application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.

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 , 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 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-WF45I Datasheet file may be downloaded here without warranties.

Datasheet ID: STK16C88-WF45I 508342