STK14C88-3NF35TR

STK14C88-3NF35TR Datasheet


STK14C88-3

Part Datasheet
STK14C88-3NF35TR STK14C88-3NF35TR STK14C88-3NF35TR (pdf)
Related Parts Information
STK14C88-3WF45I STK14C88-3WF45I STK14C88-3WF45I
STK14C88-3NF35 STK14C88-3NF35 STK14C88-3NF35
STK14C88-3WF45 STK14C88-3WF45 STK14C88-3WF45
STK14C88-3WF35I STK14C88-3WF35I STK14C88-3WF35I
STK14C88-3WF35 STK14C88-3WF35 STK14C88-3WF35
STK14C88-3NF45 STK14C88-3NF45 STK14C88-3NF45
STK14C88-3NF45TR STK14C88-3NF45TR STK14C88-3NF45TR
STK14C88-3NF45I STK14C88-3NF45I STK14C88-3NF45I
STK14C88-3NF35ITR STK14C88-3NF35ITR STK14C88-3NF35ITR
STK14C88-3NF35I STK14C88-3NF35I STK14C88-3NF35I
STK14C88-3NF45ITR STK14C88-3NF45ITR STK14C88-3NF45ITR
PDF Datasheet Preview
STK14C88-3
256 Kbit 32K x 8 AutoStore nvSRAM

Functional Description
• 35 ns and 45 ns Access Times

The Cypress STK14C88-3 is a 256 Kb fast static RAM with
• Automatic Nonvolatile STORE on power loss
a nonvolatile element in each memory cell. The embedded nonvolatile elements incorporate QuantumTrap technology
• Nonvolatile STORE under Hardware or Software control
• Automatic RECALL to SRAM on power up
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
• Unlimited Read/Write endurance
• Unlimited RECALL Cycles
• 1,000,000 STORE Cycles
• 100 year Data Retention
• Single 3.3V+0.3V Power Supply
• Commercial and Industrial Temperatures

QuantumTrap cell. Data transfers from the SRAM to the nonvolatile elements the STORE operation takes place
s automatically at power down. On power up, data is restored
to the SRAM the RECALL operation from the nonvolatile
n memory. Both the STORE and RECALL operations are also Desig available under software control.
• 32-pin 300mil SOIC and 32-pin 600 mil PDIP packages
w
• RoHS compliance

ROW DECODER

Ne Logic Block Diagram for A5
e A9 d A11
n A13 e A14

Quantum Trap 512 X 512

STORE

STATIC RAM ARRAY 512 X 512

RECALL
m DQ0 m DQ1 o DQ2 c DQ3 e DQ4

R DQ6 NotDQ7

INPUT BUFFERS

COLUMN I/O COLUMN DEC

A0 A1 A2 A3 A4 A10

VCAP

POWER CONTROL

STORE/ RECALL CONTROL

SOFTWARE DETECT
- A13 A0

CE WE
• San Jose, CA 95134-1709
• 408-943-2600
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STK14C88-3

Contents
1 Data Retention and Endurance 9

Functional 1 Capacitance 9
Part Numbering 15 Ordering 15 Package 16 Document History Page 17 Sales, Solutions and Legal Information 17

Worldwide Sales and Design Support.......................... 17 Products 17

Page 2 of 17 [+] Feedback

Pin Configurations

Figure Pin Diagram - 32-Pin SOIC/32-Pin PDIP

STK14C88-3

Designs
for New Table Pin Definitions - 32-Pin SOIC/32-Pin PDIP
ed Pin Name Alt

I/O Type
d en 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.

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.
om CE

Input

Chip Enable Input, Active LOW. When LOW, selects the chip. When HIGH, deselects the chip.
ec 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.

R VSS t VCC No HSB

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

Power Supply Power Supply Inputs to the Device.

Input or Hardware Store Busy HSB . When LOW, this output indicates a Hardware Store is in Output progress. When pulled low external to the chip, it initiates a nonvolatile STORE operation. A
weak internal pull up resistor keeps this pin high if not connected connection optional .

VCAP

Power Supply AutoStore Capacitor. Supplies power to nvSRAM during power loss to store data from SRAM to nonvolatile elements.

Page 3 of 17 [+] Feedback

STK14C88-3

Device Operation

Figure 2 shows the proper connection of the storage capacitor

The STK14C88-3 nvSRAM is made up of two functional

VCAP for automatic store operation. A charge storage capacitor having a capacity of between 68 uF and 220 uF
components paired in the same physical cell. These are an +20% rated at 4.7V should be provided.

SRAM memory cell and a nonvolatile QuantumTrap cell. The SRAM memory cell operates as a standard fast static RAM.

Figure AutoStore Mode

Data in the SRAM is transferred to the nonvolatile cell the

STORE operation or from the nonvolatile cell to SRAM the

RECALL operation . This unique architecture enables the
ed for New Ordering Information
d These parts are not recommended for new designs.
en Speed ns mm 35
Ordering Code

STK14C88-3NF35TR STK14C88-3NF35

Package Diagram
51-85127 51-85127
o STK14C88-3WF35
c STK14C88-3NF35ITR
e STK14C88-3NF35I

R STK14C88-3WF35I

STK14C88-3NF45TR
o STK14C88-3NF45

N STK14C88-3WF45
51-85018 51-85127 51-85127 51-85018 51-85127 51-85127 51-85018

Package Type
32-pin SOIC 32-pin SOIC 32-pin PDIP 32-pin SOIC 32-pin SOIC 32-pin PDIP 32-pin SOIC 32-pin SOIC 32-pin PDIP

Operating Range

Commercial

Industrial

Commercial

STK14C88-3NF45ITR
51-85127
32-pin SOIC

Industrial

STK14C88-3NF45I STK14C88-3WF45I
51-85127 51-85018
32-pin SOIC 32-pin PDIP

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

Page 15 of 17 [+] Feedback

STK14C88-3

Package Diagrams

Figure 32-Pin 300 Mil SOIC 51-85127

PIN 1 ID 1

TYP.

DIMENSIONS IN INCHES[MM]
s REFERENCE JEDEC MO-119

MIN. MAX.
signPART # e S32.3 STANDARD PKG. D SZ32.3 LEAD FREE PKG.

SEATING PLANE
d for Ne de

Figure 32-Pin 600 Mil PDIP 51-85018
en 16

DIMENSIONS IN INCHES
12/04/2009 Added a note in Ordering information mentioning that these parts are
not recommended for new designs.

Added “Not Recommended for New Designs” watermark in the PDF. Added Contents on page
ns Sales, Solutions and Legal Information ig Worldwide Sales and Design Support s Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office De closest to you, visit us at cypress.com/sales.

Products
w PSoC e Clocks & Buffers

Wireless

N Memories for Image Sensors
psoc.cypress.com clocks.cypress.com wireless.cypress.com memory.cypress.com image.cypress.com
ot Recommended 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

N 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.

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More datasheets: 3B30-CUSTOM | 3B31-CUSTOM | STK14C88-3WF45I | STK14C88-3NF35 | STK14C88-3WF45 | STK14C88-3WF35I | STK14C88-3WF35 | STK14C88-3NF45 | STK14C88-3NF45TR | STK14C88-3NF45I


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Datasheet ID: STK14C88-3NF35TR 508337