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Manual Cypress STK12C68-5

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  • Cypress STK12C68-5 - page 1

    STK12C68-5 (SMD5962-94599) 64 Kbit (8K x 8) AutoS tore nvSRAM Cypress Semiconductor Corpora tion • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 001-51026 Rev . ** Revised March 02, 2009 Features ■ 35 ns and 55 ns access times ■ Hands off automatic STORE on power down with external 68 µF capacitor ■ STOR ...

  • Cypress STK12C68-5 - page 2

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 2 of 18 Pinout s Pin Definitions Pin Name Alt IO T y p e Description A 0 –A 12 Input Address Inputs . Used to select one of the 8,192 bytes of the nvSRAM. DQ 0 -DQ 7 Input or Outpu t Bidirectiona l Data IO Lines . Used as input or output lines dependin g on ope ration. WE W Inpu ...

  • Cypress STK12C68-5 - page 3

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 3 of 18 Device Operation The STK12C68-5 nvSRAM is made up of two functional compo- nents paired in the same physical cell. These ar e 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 transferre ...

  • Cypress STK12C68-5 - page 4

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 4 of 18 Figure 4. Aut oStore In hibit Mode If the power supply drops fast er than 20 us/volt before Vcc reaches V SWITCH , then a 2.2 ohm resistor must be connected between V CC and the system supply to avoid mome ntary excess of current between V CC and V CAP . AutoStore Inhibit ...

  • Cypress STK12C68-5 - page 5

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 5 of 18 4. Read address 0x1FFF , V ali d READ 5. Read address 0x10F 0, V alid READ 6. Read address 0x0F0E, Initiate RECALL cycle Internally , RECALL is a two step procedure. First, the SRAM data is cleared; then, the nonvo latile information is transferred into the SRAM cells. Aft ...

  • Cypress STK12C68-5 - page 6

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 6 of 18 Best Practices nvSRAM products have been used e ffectively for over 15 years. While ease-of-use is o ne of the product’s main system values, experience gained working with hundreds of applica- tions has resulted in the following suggestions as best practices: ■ The non ...

  • Cypress STK12C68-5 - page 7

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 7 of 18 Maximum Ratin gs Exceeding maximum ratings may shorten the useful life of the device. These user guid elines are not tested. S torage T emperature ................ .............. .. . –65 ° C to +150 ° C T emperature under Bias .............. ............... –55 ° C ...

  • Cypress STK12C68-5 - page 8

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 8 of 18 Dat a Retention and Endurance Parameter Descriptio n Min Unit DA T A R Data Retention 100 Y ears NV C Nonvolatile STORE Operations 1,000 K Cap acit ance In the following table, the capacitance parameters are listed. [6] Parameter Description T e st Conditio ns Max Unit C I ...

  • Cypress STK12C68-5 - page 9

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 9 of 18 AC Switching Characteristics SRAM Read Cycle Parameter Description 35 ns 55 ns Unit Min Max Min Max Cypress Parameter Alt t ACE t ELQV Chip Enable Access T ime 35 55 ns t RC [7] t AVAV, t ELEH Read Cycle T ime 35 55 ns t AA [8] t AV Q V Address Access Time 35 55 ns t DOE t ...

  • Cypress STK12C68-5 - page 10

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 10 of 18 SRAM Write Cycle Parameter Descriptio n 35 ns 55 ns Unit Min Max Min Max Cypress Parameter Alt t WC t AVAV W rite Cycle T ime 35 55 ns t PWE t WL WH, t WLEH Write Pulse Width 25 45 ns t SCE t EL WH, t ELEH Chip Enable T o End of Write 25 45 ns t SD t DVWH, t DVEH Dat a Se ...

  • Cypress STK12C68-5 - page 11

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 1 1 of 18 AutoS tore or Power Up RECALL Parameter Alt Description STK12C68-5 Unit Min Max t HRECALL [13] t REST ORE Power up RECALL Duration 550 μ s t STORE [14, 15 , 16 ] t HLHZ ST ORE Cycle Duration 10 ms t DELA Y [9, 15] t HLQZ , t BLQZ Time Allowed to Co mplete SRAM Cycle 1 ? ...

  • Cypress STK12C68-5 - page 12

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 12 of 18 Sof tware Controlled STORE/RECALL Cycle The software controlled ST ORE/RECALL cycle follows. [18] Parameter Alt Description 35 ns 55 ns Unit Min Max Min Max t RC [14] t AVAV ST ORE/RECALL Initiation Cycle T ime 35 55 ns t SA [17] t A VEL Addre ss Setup Time 0 0 ns t CW [1 ...

  • Cypress STK12C68-5 - page 13

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 13 of 18 Hardware STORE Cycle Parameter Alt Description ST K12C68-5 Unit Min Max t STORE [9, 14] t HLHZ STORE Cycle Duration 10 ms t DHSB [14, 19] t RECOVER, t HHQX Hardware STORE High to Inhibit Off 700 ns t PHSB t HLHX Hardware ST ORE Pulse Widt h 15 ns t HLBL Hardware STORE Low ...

  • Cypress STK12C68-5 - page 14

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 14 of 18 S peed: 35 - 35 ns 55 - 55 ns Package: C = Ceramic 28-pin 300 mil DIP (gold le ad finish) Part Numbering Nomen clature STK12C68 - 5 C 35 M T emperature Range: M - Military (-55 to 125°C ) K L = Ceramic 28-pin LLC = Ceramic 28-pin 300 mil DI P (Solder dip fi nish) Retenti ...

  • Cypress STK12C68-5 - page 15

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 15 of 18 Ordering Information Spee d ( ns ) Ordering Code Package Diagram Package T ype Operating Ran ge 35 STK12C68-5C35 M 001-51695 28-pi n CDIP (300 mil) Military STK12C68-5K35M 001-51695 28-pi n CDIP (300 mil) STK12C68-5L35M 001-51696 28-pi n LCC (350 mil) 55 STK12C68-5C55 M 0 ...

  • Cypress STK12C68-5 - page 16

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 16 of 18 Package Diagrams Figure 15. 28-Pin (300-Mil) Side Braze DIL (001-51 695) 001-51695 ** [+] Feedback ...

  • Cypress STK12C68-5 - page 17

    STK12C68-5 (S MD5962-94599) Document Number: 001-51026 Rev . ** Page 17 of 18 Figure 16. 28-Pad (350-Mil) LCC (001-51696) Package Diagrams (continued) 1. A L L D IM E N S IO N AR E IN IN CH E S AN D M ILLIM E TE R S [M IN /M A X] 2. JEDEC 95 O UTLINE# M O-041 3. PACKAGE WEIGHT : TBD 001-51696 ** [+] Feedback ...

  • Cypress STK12C68-5 - page 18

    Document Number: 001-51026 Rev . ** Revised March 02, 2009 Page 18 of 18 AutoS tore and Qua ntumTr ap are registered tr ademarks of Cypress Se miconductor Corpor ation. All produ cts and comp any names mentio ned in this document may be the trademarks of thei r respective holders. STK12C68-5 (SMD5962-94599) © Cypress Semiconducto r Corporatio n, 2 ...

Manufacturer Cypress Category Computer Hardware

Documents that we receive from a manufacturer of a Cypress STK12C68-5 can be divided into several groups. They are, among others:
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All of them are important, but the most important information from the point of view of use of the device are in the user manual Cypress STK12C68-5.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Cypress STK12C68-5, service manual, brief instructions and user manuals Cypress STK12C68-5. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Cypress STK12C68-5.

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A complete manual for the device Cypress STK12C68-5, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Cypress STK12C68-5 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Cypress STK12C68-5.

A complete Cypress manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

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2. Contents - index of all tips concerning the Cypress STK12C68-5, that we can find in the current document
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5. FAQ - Frequently Asked Questions
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