STK14C88-3NF35 Cypress Semiconductor Corp, STK14C88-3NF35 Datasheet
STK14C88-3NF35
Specifications of STK14C88-3NF35
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STK14C88-3NF35 Summary of contents
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... Document Number: 001-50592 Rev. *A 256 Kbit (32K x 8) AutoStore nvSRAM Functional Description The Cypress STK14C88 256 Kb 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 ...
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... AutoStore or Power Up RECALL ..................................... 12 Switching Waveforms ....................................................... 12 Software Controlled STORE/RECALL Cycle................... 13 Switching Waveforms ....................................................... 13 Hardware STORE Cycle .................................................... 14 Switching Waveforms ........................................................ 14 Part Numbering Nomenclature.......................................... 15 Ordering Information......................................................... 15 Package Diagrams............................................................. 16 Document History Page ..................................................... 17 Sales, Solutions and Legal Information .......................... 17 Worldwide Sales and Design Support.......................... 17 Products ....................................................................... 17 STK14C88-3 Page [+] Feedback [+] Feedback [+] Feedback ...
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... 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). V Power Supply AutoStore Capacitor. Supplies power to nvSRAM during power loss to store data from CAP SRAM to nonvolatile elements. Document Number: 001-50592 Rev. *A STK14C88-3 Description Page [+] Feedback [+] Feedback [+] Feedback ...
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... I/O lines left LOW, internal circuitry turns off the output buffers t after WE goes LOW. HZWE AutoStore Operation The STK14C88-3 can be powered in one of three storage operations: During normal operation, the device draws current from V to charge a capacitor connected to the V charge is used by the chip to perform a single STORE operation ...
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... RECALL request is latched. When V RESET once again exceeds the sense voltage of V cycle is automatically initiated and takes t If the STK14C88 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 operation and SRAM WRITEs during low voltage conditions. When V <V CAP initiated STORE operations and SRAM WRITEs are inhibited. Noise Considerations The STK14C88 high speed memory. It must have a high frequency bypass capacitor of approximately 0.1 µF connected between V and V using leads and traces that CC SS, are as short as possible ...
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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 STK14C88-3, only the lower 14 are used to control software modes. Document Number: 001-50592 Rev. *A more random bytes) as part of the final system manufacturing test to ensure these system routines work consistently ...
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... –4 mA except HSB = 8 mA except HSB = 3 mA pin and Vss 220uF +20%, 4.7V rated. CAP if that is where the power supply connection is made STK14C88-3 or HSB .......................–0.5V to Vcc + 0.5V 0-7 Ambient Temperature V CC 0°C to +70°C 3.0V to 3.6V -40°C to +85°C 3.0V to 3.6V Min ...
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... MHz 3 [8] Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, per EIA / JESD51. Figure 6. AC Test Loads R1 317Ω 3. 351Ω STK14C88-3 Min Unit 100 Years 1,000 K Max Unit 32-SOIC 32-PDIP Unit °C/W ...
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... Figure 8. SRAM Read Cycle 2: CE and OE Controlled Notes 9. WE and HSB must be HIGH during SRAM Read Cycles. 10. I/O state assumes CE and OE < V and WE > 11. Measured ±200 mV from steady state output voltage. Document Number: 001-50592 Rev. *A Description ; device is continuously selected. IH STK14C88 Unit Min Max Min Max ...
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... Address Setup to End of Write Address Setup to Start of Write Address Hold After End of Write Write Enable to Output Disable Output Active After End of Write SCE PWE t SD DATA VALID t HZWE HIGH IMPEDANCE SCE PWE t SD DATA VALID HIGH IMPEDANCE STK14C88 Unit Min Max Min Max ...
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... Document Number: 001-50592 Rev. *A Description ) to HSB low SWITCH Figure 11. AutoStore/Power Up RECALL . SWITCH . If an SRAM WRITE has not taken place since the last nonvolatile cycle, HSB will be released and no SWITCH STK14C88-3 STK14C88-3 Unit Min Max μs 550 10 ms 300 ns 2 ...
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... The software sequence is clocked on the falling edge of CE without involving OE (double clocking will abort the sequence). 19. 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: 001-50592 Rev. *A [18, 19 Description Min DATA VALID STK14C88 Unit Max Min Max μ [19 STORE RECALL HIGH IMPEDANCE ...
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... Hardware STORE High to Inhibit Off DHSB RECOVER, HHQX t Hardware STORE Low to STORE Busy HLBL Switching Waveforms Note 20 only applicable after t is complete. DHSB STORE Document Number: 001-50592 Rev. *A Description Figure 13. Hardware STORE Cycle STK14C88-3 STK14C88-3 Unit Min Max 15 ns 700 ns 300 ns Page [+] Feedback [+] Feedback [+] Feedback ...
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... These parts are not recommended for new designs. Speed Ordering Code (ns) 35 STK14C88-3NF35TR STK14C88-3NF35 STK14C88-3WF35 STK14C88-3NF35ITR STK14C88-3NF35I STK14C88-3WF35I 45 STK14C88-3NF45TR STK14C88-3NF45 STK14C88-3WF45 STK14C88-3NF45ITR STK14C88-3NF45I STK14C88-3WF45I All parts are Pb-free. The above table contains Final information. Please contact your local Cypress sales representative for availability of these parts Document Number: 001-50592 Rev ...
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... SEATING PLANE .009 .140 .012 .160 .015 .060 .045 .065 .015 .020 - + STK14C88-3 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 MIN. MAX. .600 .625 3° MIN. .625 .670 51-85018-*B ...
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... Document History Page Document Title: STK14C88-3 256 Kbit (32K x 8) AutoStore nvSRAM Document Number: 001-50592 Orig. of Rev. ECN No. Change ** 2625096 GVCH/PYRS *A 2821358 GVCH Sales, Solutions and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at cypress ...