STK11C88-NF25 Cypress Semiconductor Corp, STK11C88-NF25 Datasheet
STK11C88-NF25
Specifications of STK11C88-NF25
Available stocks
Related parts for STK11C88-NF25
STK11C88-NF25 Summary of contents
Page 1
... Document Number: 001-50591 Rev. *C 256 Kbit (32K x 8) SoftStore nvSRAM Functional Description The Cypress STK11C88 is a 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 ...
Page 2
... SRAM Write Cycle....................................................... 10 Switching Waveforms ...................................................... 10 STORE INHIBIT or Power Up RECALL ........................... 11 Switching Waveforms ...................................................... 11 Software Controlled STORE/RECALL Cycle .................. 12 Switching Waveforms ...................................................... 12 Part Numbering Nomenclature ........................................ 13 Ordering Information ........................................................ 13 Package Diagrams ............................................................ 14 Document History Page ................................................... 16 Sales, Solutions and Legal Information ......................... 16 Worldwide Sales and Design Support......................... 16 Products ...................................................................... 16 STK11C88 Page [+] Feedback ...
Page 3
... Deasserting OE HIGH causes the I/O pins to tristate. V Ground Ground for the Device. The device is connected to the ground of the system Power Supply Power Supply Inputs to the Device. CC Document Number: 001-50591 Rev. *C Figure 1. Pin Diagram - 28-Pin SOIC Description STK11C88 Page [+] Feedback ...
Page 4
... V once again exceeds the sense voltage RECALL cycle is automatically initiated and takes t complete. If the STK11C88 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 or between CE and system V CC ...
Page 5
... STORE opera- CC SWITCH tions and SRAM WRITEs are inhibited. Noise Considerations The STK11C88 is a 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 are as short CC SS, as possible ...
Page 6
... L H Notes 1. 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. 2. While there are 15 addresses on the STK11C88, only the lower 14 are used to control software modes. Document Number: 001-50591 Rev – A ...
Page 7
... CE > – 0.2V). All others V < 0.2V or > Max, V < V < Max, V < V < > – Description STK11C88 ...................................–0.5V to Vcc + 0.5V 0-7 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 mA 70 ...
Page 8
... MHz 3 [4] Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, per EIA / JESD51. Figure 4. AC Test Loads R1 480Ω 5. 255Ω STK11C88 Max Unit 28-SOIC 28-SOIC Unit (300 mil) (330 mil) °C/W TBD TBD °C/W ...
Page 9
... WE must be HIGH during SRAM Read Cycles and LOW during SRAM WRITE cycles. 6. I/O state assumes CE and OE < V and WE > Measured ±200 mV from steady state output voltage. Document Number: 001-50591 Rev. *C Description ; device is continuously selected. IH STK11C88 Unit Min Max Min Max 25 ...
Page 10
... 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 STK11C88 Unit Min Max Min Max ...
Page 11
... BROWN OUT BROWN OUT STORE INHIBIT STORE INHIBIT NO RECALL NO RECALL (V DID NOT GO (V DID NOT BELOW V ) BELOW V ) RESET RESET . SWITCH STK11C88 STK11C88 Unit Min Max μs 550 10 ms 3.6 V 4.0 4.5 V BROWN OUT STORE INHIBIT RECALL WHEN V RETURNS CC ABOVE V SWITCH Page ...
Page 12
... The software sequence is clocked on the falling edge of CE without involving OE (double clocking abort the sequence). 12. 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: 001-50591 Rev. *C [11, 12 Description Min DATA VALID STK11C88 45 ns Unit Max Min Max μ [12 STORE RECALL HIGH IMPEDANCE ...
Page 13
... These parts are not recommended for new designs. They are in production to support ongoing production programs only. Speed Ordering Code (ns) 25 STK11C88-NF25ITR STK11C88-NF25I STK11C88-SF25ITR STK11C88-SF25I All parts are Pb-free. The above table contains Final information. Contact your local Cypress sales representative for availability of these parts Document Number: 001-50591 Rev. *C Packaging Option: ...
Page 14
... Package Diagrams Document Number: 001-50591 Rev. *C Figure 11. 28-Pin (300 mil) SOIC (51-85026) STK11C88 51-85026 *E Page [+] Feedback ...
Page 15
... Package Diagrams (continued) Document Number: 001-50591 Rev. *C Figure 12. 28-Pin (330 mil) SOIC (51-85058) STK11C88 51-85058 *B Page [+] Feedback ...
Page 16
... In production to support ongoing production programs only.” Added Contents on page 2. 04/01/2010 Removed inactive parts from Ordering Information table. Updated package diagrams. 10/08/10 Removed the following inactive parts from the Ordering information table: STK11C88-NF25, STK11C88-NF25TR, STK11C88-NF45, STK11C88-NF45I, STK11C88-NF45ITR, STK11C88-NF45TR, STK11C88-SF45, STK11C88-SF45I, STK11C88-SF45ITR, STK11C88-SF45TR psoc.cypress.com clocks.cypress.com image.cypress.com ...