STK14D88-RF45 Cypress Semiconductor Corp, STK14D88-RF45 Datasheet
STK14D88-RF45
Specifications of STK14D88-RF45
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STK14D88-RF45 Summary of contents
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... Cypress Semiconductor Corporation Document Number: 001-52037 Rev. *A 32Kx8 AutoStore nvSRAM 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. ...
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... Hardware STORE (HSB) Operation............................. 12 Software STORE.......................................................... 12 Software RECALL ........................................................ 13 Data Protection............................................................. 13 Best Practices .............................................................. 13 Low Average Active Power .......................................... 13 Noise Considerations ................................................... 14 Preventing AutoStore ................................................... 14 Part Numbering Nomenclature......................................... 16 Package Diagrams............................................................. 17 Document History Page ..................................................... 19 Sales, Solutions, and Legal Information ......................... 19 Worldwide Sales and Design Support.......................... 19 Products ....................................................................... 19 STK14D88 Page [+] Feedback [+] Feedback [+] Feedback ...
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... Power Supply AutoStore Capacitor: Supplies power to nvSRAM during power loss to store data from SRAM to CAP nonvolatile storage elements. V Power Supply Ground Connect Unlabeled pins have no internal connections. Note 1. See “Package Diagrams” on page 16 for detailed package size specifications. Document Number: 001-52037 Rev HSB Relative PCB Area Usage Description STK14D88 32-SOIC V CAP HSB TOP ...
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... 2 – .5 0.8 V – 2.4 2.4 0.4 0.4 STK14D88 Unit Notes AVAV AVAV AVAV Dependent on output loading and cycle rate. Values obtained without output loads. mA All Inputs Don’t Care max CC Average current for duration of STORE cycle (t ...
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... INCLUDING SCOPE AND FIXTURE , 3.0V 577Ω OUTPUT 5 pF 789Ω INCLUDING SCOPE AND FIXTURE Test Conditions T = 25° MHz, A STK14D88 Unit Notes °C V 3.3V +20%, -10% μF Between V pin and Rated CAP SS K Years At 55° WLQZ WHQZ ...
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... W must be high during SRAM READ cycles. 5. Device is continuously selected with E and G both low. 6. Measured ± 200 mV from steady state output voltage. 7. HSB must remain high during READ and WRITE cycles. Document Number: 001-52037 Rev. *A STK14D88-25 STK14D88-35 STK14D88-45 Parameter Min Max 25 ...
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... DATA OUT Notes low when E goes low, the outputs remain in the high-impedance state. ≥ must be V during address transitions. IH Document Number: 001-52037 Rev. *A STK14D88-25 STK14D88-35 STK14D88-45 Parameter Min Write Cycle Time 25 Write Pulse Width 20 Chip Enable to End of Write 20 Data Set-up to End of Write ...
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... If an SRAM WRITE has not taken place since the last nonvolatile cycle, no STORE will take place. 12. Industrial Grade Devices require 15 ms Max. Document Number: 001-52037 Rev. *A Parameter Figure 8. AutoStore /POWER UP RECALL SWITCH STK14D88 STK14D88 Unit Min Max 20 ms 12.5 ms 2.65 V μs 150 ...
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... The software sequence is clocked on the falling edge of E controlled READs. 14. The six consecutive addresses must be read in the order listed in the software STORE/RECALL Mode Selection Table. W must be high during all six consecutive cycles Document Number: 001-52037 Rev. *A [13, 14] STK14D88-25 STK14D88-35 STK14D88-45 Parameter Min Max ...
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... Parameter Hardware STORE to SRAM Disabled Hardware STORE Pulse Width Figure 10. Hardware STORE Cycle 23 31 Parameter Min Soft Sequence Processing Time Figure 11. Software Sequence Commands 33 STK14D88 STK14D88 Unit Notes Min Max 1 70 µ STK14D88 Unit Notes Max 70 µs 16 Page [+] Feedback [+] Feedback [+] Feedback ...
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... The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. 19. While there are 15 addresses on the STK14D88, only the lower 14 are used to control software modes 20. I/O state depends on the state of G. The I/O table shown assumes G low. ...
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... SRAM. In addition, it provides unlimited RECALL operations from the nonvolatile cells and up to 200K STORE operations. SRAM READ The STK14D88 performs a READ cycle whenever E and G are low while W and HSB are high. The address specified on pins A determine which of the 32,768 data bytes will be accessed. ...
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... WRITE operations. The low-voltage condition is detected when V < SWITCH If the STK14D88 WRITE mode (both E and W low) at power up, after a RECALL, or after a STORE, the WRITE will be inhibited until a negative transition detected. This protects against inadvertent writes during power up or brown out conditions. Best Practices nvSRAM products have been used effectively for over 15 years. While ease-of-use is one of the product’ ...
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... Cycle Time (ns) Noise Considerations The STK14D88 is a high speed memory and so must have a high frequency bypass capacitor of 0.1 µF connected between both V pins and V ground plane with no plane break to chip Use leads and traces that are as short as possible. As with all high speed CMOS ICs, careful routing of power, ground, and signals will reduce circuit noise ...
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... AutoStore nvSRAM SSOP48-300 STK14D88-RF45I 3V 32Kx8 AutoStore nvSRAM SSOP48-300 STK14D88-RF25ITR 3V 32Kx8 AutoStore nvSRAM SSOP48-300 STK14D88-RF35ITR 3V 32Kx8 AutoStore nvSRAM SSOP48-300 STK14D88-RF45ITR 3V 32Kx8 AutoStore nvSRAM SSOP48-300 Document Number: 001-52037 Rev. *A Packaging Option Tape and Reel Blank = Tube Temperature Range: Blank - Commercial (0 to 70° Industrial (-40 to 85° ...
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... Figure 14. 32-Pin (300 Mil) SOIC (51-85127) PIN DIMENSIONS IN INCHES[MM] 0.292[7.416] 0.299[7.594] REFERENCE JEDEC MO-119 0.405[10.287] 0.419[10.642] 32 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] STK14D88 MIN. MAX. PART # S32.3 STANDARD PKG. SZ32.3 LEAD FREE PKG. 0.006[0.152] 0.021[0.533] 0.012[0.304] 0.041[1.041] 51-85127 *B Page [+] Feedback [+] Feedback [+] Feedback ...
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... Package Diagrams (continued) Document Number: 001-52037 Rev. *A Figure 15. 48-Pin (300 Mil) SSOP (51-85061) STK14D88 51-85061-*C Page [+] Feedback [+] Feedback [+] Feedback ...
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... Document History Page Document Title: STK14D88 32Kx8 AutoStore nvSRAM Document Number: 001-52037 Orig. of Submission Revision ECN Change Date ** 2668632 GVCH 03/04/2009 New data sheet *A 2821358 GVCH 12/04/2009 Added Note in Ordering Information mentioning that these parts are not recom- Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’ ...