CY14E256L-D45I CYPRESS [Cypress Semiconductor], CY14E256L-D45I Datasheet
CY14E256L-D45I
Related parts for CY14E256L-D45I
CY14E256L-D45I Summary of contents
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... Document Number: 001-06968 Rev. *G 256 Kbit (32K x 8) nvSRAM Functional Description The Cypress CY14E256L is a fast static RAM with a nonvolatile 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 ...
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... V Power Supply AutoStore Capacitor. Supplies power to nvSRAM during power loss to store data from SRAM CAP to nonvolatile elements. Document Number: 001-06968 Rev. *G Figure 1. Pin Diagram: 32-Pin SOIC/DIP Description CY14E256L Page [+] Feedback ...
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... Device Operation The CY14E256L nvSRAM is made up of two functional compo- nents paired in the same physical cell. These are an SRAM memory cell and a nonvolatile QuantumTrap cell. The SRAM memory cell operates as a standard fast static RAM. Data in the SRAM is transferred to the nonvolatile cell (the STORE operation) or from the nonvolatile cell to SRAM (the RECALL operation) ...
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... V cycle is automatically initiated and takes t Document Number: 001-06968 Rev the CY14E256L WRITE state at the end of power up RECALL, the SRAM data is corrupted. To help avoid this situation Kohm resistor is connected either between WE and system V ...
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... STORE, the WRITE is inhibited until a negative transition detected. This protects against inadvertent writes during power up or brown out conditions. Noise Considerations The CY14E256L is a high speed memory. It must have a high frequency bypass capacitor of approximately 0.1 µF connected between V and V ...
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... CE and OE LOW and WE HIGH for output behavior. 4. The six consecutive addresses must be in the order listed. WE must be high during all six consecutive CE controlled cycles to enable a nonvolatile cycle. 5. While there are 15 addresses on the CY14E256L, only the lower 14 are used to control software modes. Document Number: 001-06968 Rev. *G manufacturing test to ensure these system routines work consistently ...
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... Max, V < V < Max, V < V < > that is where the power supply connection is made CY14E256L Ambient Temperature V CC 0°C to +70°C 4.5V to 5.5V -40°C to +85°C 4.5V to 5.5V Min Max Unit Commercial Industrial 100 ...
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... T = 25° MHz 3.0V CC [8] Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, per EIA / JESD51. Figure 6. AC Test Loads 5.0V Output 512Ω CY14E256L Min Max Unit V – 0 0.5 2.4 V 0 260 ...
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... WE and HSB must be HIGH during SRAM Read cycles. 10. Device is continuously selected with CE and OE both Low. 11. Measured ±200 mV from steady state output voltage. Document Number: 001-06968 Rev Description Min Max CY14E256L Unit Min Max Min Max ...
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... WC t SCE PWE t SD DATA VALID t HZWE HIGH IMPEDANCE [13, 14 SCE PWE t SD DATA VALID HIGH IMPEDANCE CY14E256L Unit Min Max Min Max ...
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... Document Number: 001-06968 Rev. *G Description Rise Time HSB low SWITCH Figure 11. AutoStore/Power Up RECALL . SWITCH . If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB is released and no store SWITCH CY14E256L CY14E256L Unit Min Max μs 550 10 ms μs 1 4.0 4 ...
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... The six consecutive addresses must be read in the order listed in the Mode Selection table. WE must be HIGH during all six consecutive cycles. Document Number: 001-06968 Rev. *G [19 Description Min Max DATA VALID CY14E256L Unit Min Max Min Max [19 ...
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... Hardware STORE Pulse Width PHSB HLHX t Hardware STORE Low to STORE Busy HLBL Switching Waveforms Note 20 only applicable after t is complete. DHSB STORE Document Number: 001-06968 Rev. *G Description Figure 13. Hardware STORE Cycle CY14E256L CY14E256L Unit Min Max 700 300 ns Page [+] Feedback ...
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... CY14E256L-SZ35XC CY14E256L-SZ35XIT CY14E256L-SZ35XI 45 CY14E256L-SZ45XCT CY14E256L-SZ45XC CY14E256L-SZ45XIT CY14E256L-SZ45XI CY14E256L-D45I The above table contains Final information. Please contact your local Cypress sales representative for availability of these parts Document Number: 001-06968 Rev. *G Option Tape & Reel Blank - Std. Temperature Commercial (0 to 70° Industrial (-40 to 85°C) ...
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... SEATING PLANE 0.090[2.286] 0.100[2.540] 0.004[0.101] 0.026[0.660] 0.032[0.812] 0.004[0.101] 0.0100[0.254] CY14E256L MIN. MAX. PART # S32.3 STANDARD PKG. SZ32.3 LEAD FREE PKG. 51-85058 *A 0.006[0.152] 0.021[0.533] 0.012[0.304] 0.041[1.041] 51-85127-*A ...
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... Package Diagram (continued) Document Number: 001-06968 Rev. *G Figure 15. 32-Pin (300 Mil) CDIP (001-51694) CY14E256L 001-51694 ** Page [+] Feedback ...
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... Added footnote 6 and 7 Added t and V VSBL RESET Added Thermal resistance values Changed parameter Renamed GLAX HACE Renamed RESTORE DHSB Updated Figure 13 GVCH/PYRS Changed part number from CY14E256L-D45XI to CY14E256L-D45I CY14E256L - 0. 0. parameter to Autostore or Power-up Recall table SA Page [+] Feedback ...
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... All products and company names mentioned in this document may be the trademarks of their respective holders. PSoC Solutions psoc.cypress.com General clocks.cypress.com Low Power/Low Voltage Precision Analog LCD Drive image.cypress.com CAN 2.0b USB Revised May 18, 2009 CY14E256L psoc.cypress.com/solutions psoc.cypress.com/low-power psoc.cypress.com/precision-analog psoc.cypress.com/lcd-drive psoc.cypress.com/can psoc.cypress.com/usb Page [+] Feedback ...