Cypress Semiconductor STK11C68-5 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para não Cypress Semiconductor STK11C68-5. STK11C68, STK11C68-5 (SMD5962-92324), 64 [en] Manual do Utilizador

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STK14D88
32Kx8 AutoStore™ nvSRAM
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document Number: 001-52037 Rev. ** Revised March 02, 2009
Features
25, 35, 45 ns Read Access and R/W Cycle Time
Unlimited Read/Write Endurance
Automatic Nonvolatile STORE on Power Loss
Nonvolatile STORE Under Hardware or Software Control
Automatic RECALL to SRAM on Power Up
Unlimited RECALL Cycles
200K STORE Cycles
20-Year Nonvolatile Data Retention
Single 3.0V +20%, -10% Power Supply
Commercial, Industrial Temperatures
Small Footprint SOIC and SSOP Packages (RoHS-Compliant)
Description
The Cypress STK14D88 is a 256Kb fast static RAM with a
nonvolatile Quantum Trap™ storage element included with each
memory cell.
The SRAM provides fast access and cycle times, ease of use,
and unlimited read and write endurance of a normal SRAM.
Data transfers automatically to the nonvolatile storage cells
when power loss is detected (the STORE operation). On power
up, data is automatically restored to the SRAM (the RECALL
operation). Both STORE and RECALL operations are also
available under software control.
The Cypress nvSRAM is the first monolithic nonvolatile memory
to offer unlimited writes and reads. It is the highest performance,
most reliable nonvolatile memory available.
A
0
A
1
A
2
A
3
A
4
A
10
COLUMN I/O
COLUMN DEC
STATIC RAM
ARRAY
512 x 512
ROW DECODER
INPUT BUFFERS
Quantum Trap
512 x 512
STORE/
RECALL
CONTROL
STORE
RECALL
POWER
CONTROL
A
5
A
6
A
7
A
8
A
9
A
11
A
12
A
13
A
14
DQ
0
DQ
1
DQ
2
DQ
3
DQ
4
DQ
5
DQ
6
DQ
7
SOFTWARE
DETECT
G
E
W
HSB
V
CCX
V
CAP
A
0
- A
13
Logic Block Diagram
[+] Feedback
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Resumo do Conteúdo

Página 1 - 32Kx8 AutoStore™ nvSRAM

STK14D8832Kx8 AutoStore™ nvSRAMCypress Semiconductor Corporation • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600Document Number: 001-520

Página 2

STK14D88Document Number: 001-52037 Rev. ** Page 10 of 17Mode SelectionE W G A14–A0Mode IO Power NotesH X X X Not Selected Output High Z StandbyL H L X

Página 3

STK14D88Document Number: 001-52037 Rev. ** Page 11 of 17nvSRAM OperationnvSRAMThe STK14D88 nvSRAM is made up of two functional compo-nents paired in t

Página 4

STK14D88Document Number: 001-52037 Rev. ** Page 12 of 17To initiate the software STORE cycle, the following READsequence must be performed:1. Read Add

Página 5 - DATA VALID

STK14D88Document Number: 001-52037 Rev. ** Page 13 of 17Figure 13. Current versus Cycle TimeNoise ConsiderationsThe STK14D88 is a high-speed memory a

Página 6

STK14D88Document Number: 001-52037 Rev. ** Page 14 of 17Ordering CodesPart Numbering Nomenclature Packaging Option:TR = Tape and ReelBlank = TubeSpeed

Página 7

STK14D88Document Number: 001-52037 Rev. ** Page 15 of 17Package DiagramsFigure 14. 32-Pin (300 Mil) SOIC (51-85127)PIN 1 IDSEATING PLANE11617 32DIMEN

Página 8

STK14D88Document Number: 001-52037 Rev. ** Page 16 of 17Figure 15. 48-Pin (300 Mil) SSOP (51-85061)Package Diagrams (continued)51-85061-*C[+] Feedbac

Página 9

Document Number: 001-52037 Rev. ** Revised March 02, 2009 Page 17 of 17AutoStore and QuantumTrap are registered trademarks of Cypress Semiconductor Co

Página 10 - STK14D88

STK14D88Document Number: 001-52037 Rev. ** Page 2 of 17Pin ConfigurationsFigure 1. Pin Diagram 48-Pin SSOP/32-SOICPin DescriptionsPin Name I/O Descr

Página 11

STK14D88Document Number: 001-52037 Rev. ** Page 3 of 17Absolute Maximum RatingsVoltage on Input Relative to Ground...–0.5V to 4.1VVoltag

Página 12 - Low Average Active Power

STK14D88Document Number: 001-52037 Rev. ** Page 4 of 17VOLOutput Logic “0” Voltage 0.4 0.4 V IOUT = 4mA TAOperating Temperature 0 70 -40 85 °CVCCOpera

Página 13

STK14D88Document Number: 001-52037 Rev. ** Page 5 of 17 Figure 5. SRAM READ Cycle 2: E Controlled [4, 7] SRAM READ Cycles #1 and #2NO.SymbolsParamete

Página 14

STK14D88Document Number: 001-52037 Rev. ** Page 6 of 17SRAM WRITE Cycle #1 and #2NO.SymbolsParameterSTK14D88-25 STK14D88-35 STK14D88-45 UnitMin Max

Página 15 - SEATING PLANE

STK14D88Document Number: 001-52037 Rev. ** Page 7 of 17AutoStore/POWER UP RECALLNo. Symbols Alt. ParameterSTK14D88Unit NotesMin Max22 tRECALLPower up

Página 16

STK14D88Document Number: 001-52037 Rev. ** Page 8 of 17Software-Controlled STORE/RECALL Cycle[13, 14]No.SymbolsParameterSTK14D88-25 STK14D88-35 STK1

Página 17 - Products

STK14D88Document Number: 001-52037 Rev. ** Page 9 of 17Hardware STORE CycleNO.SymbolsParameterSTK14D88Unit NotesStandard Alternate Min Max31 tDELAYtHL

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