Cypress Semiconductor STK11C68-5 Manuel d'utilisateur

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STK11C68
64 Kbit (8K x 8) SoftStore nvSRAM
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document Number: 001-50638 Rev. *C Revised October 8, 2010
Features
25 ns, 35 ns, and 45 ns access times
Pin compatible with industry standard SRAMs
Software initiated nonvolatile STORE
Unlimited Read and Write endurance
Automatic RECALL to SRAM on power up
Unlimited RECALL cycles
1,000,000 STORE cycles
100 year data retention
Single 5V+10% operation
Commercial and industrial temperature
28-pin (330 mil) SOIC package
28-pin (300 mil) CDIP and 28-pad (350 mil) LCC packages
RoHS compliance
Functional Description
The Cypress STK11C68 is a 64Kb fast static RAM with a nonvol-
atile 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 under software control from SRAM to the nonvolatile
elements (the STORE operation). On power up, data is automat-
ically restored to the SRAM (the RECALL operation) from the
nonvolatile memory. RECALL operations are also available
under software control.
STORE/
RECALL
CONTROL
POWER
CONTROL
SOFTWARE
DETECT
STATIC RAM
ARRAY
128 X 512
Quantum Trap
128 X 512
STORE
RECALL
COLUMN I/O
COLUMN DEC
ROW DECODER
INPUT BUFFERS
OE
CE
WE
HSB
V
CC
V
CAP
A
0
-
A
12
A
0
A
1
A
2
A
3
A
4
A
10
A
5
A
6
A
7
A
8
A
9
A
11
A
12
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
Logic Block Diagram
Not recommended for new designs.
In production to support ongoing production programs.
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Résumé du contenu

Page 1 - STK11C68

STK11C6864 Kbit (8K x 8) SoftStore nvSRAMCypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600Document Numbe

Page 2

STK11C68Document Number: 001-50638 Rev. *C Page 10 of 15AutoStore INHIBIT or Power Up RECALLParameter Alt DescriptionSTK11C68UnitMin MaxtHRECALL [9]tR

Page 3

STK11C68Document Number: 001-50638 Rev. *C Page 11 of 15Software Controlled STORE/RECALL CycleThe software controlled STORE/RECALL cycle follows. [10,

Page 4

STK11C68Document Number: 001-50638 Rev. *C Page 12 of 15Ordering InformationThese parts are not recommended for new designs. They are in production to

Page 5

STK11C68Document Number: 001-50638 Rev. *C Page 13 of 15Package DiagramsFigure 11. 28-Pin (330 Mil) SOIC (51-85058)51-85058 *BNot recommended for new

Page 6

STK11C68Document Number: 001-50638 Rev. *C Page 14 of 15Figure 12. 28-Pin (300 Mil) Side Braze DIL (001-51695)Package Diagrams (continued)001-51695 *

Page 7

Document Number: 001-50638 Rev. *C Revised October 8, 2010 Page 15 of 15All products and company names mentioned in this document may be the trademark

Page 8

STK11C68Document Number: 001-50638 Rev. *C Page 2 of 15ContentsFeatures ...1

Page 9

STK11C68Document Number: 001-50638 Rev. *C Page 3 of 15 Pin ConfigurationsFigure 1. Pin Diagram - 28-Pin SOIC/DIP and 28-Pin LLCPin DefinitionsPin N

Page 10 - HRECALL

STK11C68Document Number: 001-50638 Rev. *C Page 4 of 15Device OperationThe STK11C68 is a versatile memory chip that provides severalmodes of operation

Page 11

STK11C68Document Number: 001-50638 Rev. *C Page 5 of 15The overall average current drawn by the STK11C68 dependson the following items: The duty cycl

Page 12

STK11C68Document Number: 001-50638 Rev. *C Page 6 of 15Maximum RatingsExceeding maximum ratings may shorten the useful life of thedevice. These user g

Page 13

STK11C68Document Number: 001-50638 Rev. *C Page 7 of 15CapacitanceIn the following table, the capacitance parameters are listed.[3]Parameter Descripti

Page 14

STK11C68Document Number: 001-50638 Rev. *C Page 8 of 15AC Switching Characteristics SRAM Read CycleParameterDescription25 ns 35 ns 45 ns UnitMin Max

Page 15 - Products

STK11C68Document Number: 001-50638 Rev. *C Page 9 of 15SRAM Write CycleParameterDescription25 ns 35 ns 45 ns UnitMin Max Min Max Min MaxCypressParam

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