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Manual Cypress CY7C0251AV

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  • Cypress CY7C0251AV - page 1

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V 3.3V 4K/8K/16K x 16/18 Dual-Port S tatic RAM Cypress Semiconducto r Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document #: 38-06052 Rev . *J Revised December 10, 2008 Features ■ T rue dual-ported memory cells which enable si mu ltaneous access of the s ...

  • Cypress CY7C0251AV - page 2

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 2 of 19 Pin Configurations Figure 1. 100- P in TQ FP (T op View) Notes 6. A 12L on the CY7C025A V . 7. A 12R on the CY7C025A V . 100 99 97 98 96 2 3 1 42 41 59 60 61 12 13 15 14 16 4 5 40 39 95 94 17 26 9 10 8 7 6 11 27 28 30 29 31 32 35 34 36 37 38 33 67 6 ...

  • Cypress CY7C0251AV - page 3

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 3 of 19 Figure 2. 100- P in TQ FP (T op View) Notes 8. A 12L on the CY7C0251A V . 9. A 12R on the CY7C0251A VC. Pin Configurations (continued) 100 99 97 98 96 2 3 1 42 41 59 60 61 12 13 15 14 16 4 5 40 39 95 94 17 26 9 10 8 7 6 11 27 28 30 29 31 32 35 34 36 ...

  • Cypress CY7C0251AV - page 4

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 4 of 19 Figure 3. 100- P in TQ FP (T op View) Pin Configurations (continued) 100 99 97 98 96 2 3 1 42 41 59 60 61 12 13 15 14 16 4 5 40 39 95 94 17 26 9 10 8 7 6 11 27 28 30 29 31 32 35 34 36 37 3 8 33 67 66 64 65 63 62 68 69 70 75 73 74 72 71 89 88 86 87 8 ...

  • Cypress CY7C0251AV - page 5

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 5 of 19 Architecture The CY7C024A V/024BV/025A V/026A V and CY7C0241A V/0251A V/036A V consist of an array of 4K, 8K, and 16K words of 16 and 18 bits each of dual-port RAM cells, IO and address lines, and control signals (CE , OE , RW ). These control pins ...

  • Cypress CY7C0251AV - page 6

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 6 of 19 3FFF for the CY7C026A V/36A V) is the mailbox for the right port and the second highest memory location (FFE for the CY7C024A V/024BV/41A V/1F FE for the CY7C0 25A V/51A V , 3FFE for the CY7C02 6A V/36A V) is the mailb ox for the left port. When one ...

  • Cypress CY7C0251AV - page 7

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 7 of 19 T able 1 . Non-Conten ding Read/W rite Inputs Outpu ts Operation CE R/W OE UB LB SEM IO 9 – IO 17 IO 0 – IO 8 H X X X X H High Z High Z Deselected: Power Down X X X H H H High Z High Z Deselected: Power Down L L X L H H Data In High Z Write to U ...

  • Cypress CY7C0251AV - page 8

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 8 of 19 Maximum Ratings Exceeding maximum ratings [14] may shorten the useful life of th e device. User guidelines are not te ste d. S torage T emperature ......................... ........ –65°C to +150°C Ambient T e mperature with Power Applied ...... ...

  • Cypress CY7C0251AV - page 9

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 9 of 19 Figure 4. AC T est Load s an d W aveforms 3.0V GND 90% 90% 10% 3n s 3 ns 10% ALL INPUT PULSES (a) Normal Load (Load 1) R1 = 590 Ω 3.3V OUTPUT R2 = 435 Ω C= 3 0 pF V TH =1 . 4 V OUTPUT C= 30pF (b) Thévenin Equivalent (Load 1) (c) Three-S tate Dela ...

  • Cypress CY7C0251AV - page 10

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 10 of 19 Dat a Retention Mode The CY7C024A V/024BV/025A V/026A V and CY7C0241A V/0251A V/036A V are designed for battery backup. Data retention voltage and supply current are guaranteed over temperature. The following rules ensure data retention: 1. Chip En ...

  • Cypress CY7C0251AV - page 11

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 1 1 of 19 Switching W aveforms Notes 29. R/W is HIGH for read cycles. 30. Device is continuously selected C E = V IL and UB or LB = V IL . This waveform cann ot be used for semaph ore reads. 31. OE = V IL . 32. Address valid prior to or coincident with C E ...

  • Cypress CY7C0251AV - page 12

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 12 of 19 Notes 34. R/W or CE must be HIGH during all address transitions. 35. A write occurs during the overlap (t SCE or t PWE ) of a LOW CE or SEM and a LOW UB or LB . 36. t HA is measured from the earlier of CE or R/W or (SEM or R/W ) going HIGH at the e ...

  • Cypress CY7C0251AV - page 13

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 13 of 19 Notes 43. CE = HIGH for the duration of the above timing (both write and re ad cycle). 44. IO 0R = IO 0L = LOW (request semaphore); CE R = CE L = HIGH. 45. Semaphores are reset (available to both ports) at cycle start. 46. If t SPS is violated, the ...

  • Cypress CY7C0251AV - page 14

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 14 of 19 Note 47. CE L = CE R = LOW . Switching W aveforms (continued) VA L I D t DDD t WDD MA TCH MA TCH R/W R DA T A IN R DA T A OUTL t WC ADDRESS R t PWE VA L I D t SD t HD ADDRESS L t PS t BLA t BHA t BDD BUSY L Figure 12. Timing Diagram of Read w ith B ...

  • Cypress CY7C0251AV - page 15

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 15 of 19 Note 48. If t PS is violated, the busy signal is asserted on one side or the ot her , but there is no guarantee to which side BUSY is asserted. Switching W aveforms (continued) ADDRESS MA TCH t PS t BLC t BHC ADDRESS MA TCH t PS t BLC t BHC CE R Va ...

  • Cypress CY7C0251AV - page 16

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 16 of 19 Notes 49. t HA depends on which en able pin (CE L or R/W L ) is deasserted fir s t. 50. t INS or t INR depends on which enable pin (CE L or R/W L ) is assert ed la st. Switching W aveforms (continued) WRITE 1FFF (OR 1/3FFF) t WC Right Side Clears I ...

  • Cypress CY7C0251AV - page 17

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 17 of 19 Ordering Information 4K x16 3.3V Asynchronous Dual -Port SRAM Spee d (ns) Orderin g Co de Package Diagram Package T ype Operating Range 15 CY7C024A V -15AI 5 1-850 48 100-Pin Thin Quad Flat Pack Industrial CY7C024BV -15AXI 51-85048 100-Pin Pb-Free ...

  • Cypress CY7C0251AV - page 18

    CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V Document #: 38-06052 Rev . *J Page 18 of 19 Package Diagram Figure 17. 100-Pin Pb-Free Thin Plastic Quad Flat Pack (T QFP) A100 16K x18 3.3V Asynchron ous Dual-Port SRAM Spee d (ns) Orderin g Co de Package Name Package T ype Operating Range 20 CY7C036A V-20AC 51-85048 100-Pin Thin Quad Flat ...

  • Cypress CY7C0251AV - page 19

    Document #: 38-06052 Rev . *J Revised December 10, 2008 Page 19 of 19 All products and c ompany names men tioned in th is document m ay be the tr ademarks o f t h eir respect i v e holders. CY7C024A V/024BV/025A V/026A V CY7C0241A V/0251A V/036A V © Cypress Semicondu ctor Corpor ation, 2001-200 8. The informati on cont ained herein is subject to c ...

Manufacturer Cypress Category Computer Hardware

Documents that we receive from a manufacturer of a Cypress CY7C0251AV can be divided into several groups. They are, among others:
- Cypress technical drawings
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- Cypress product data sheets
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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 CY7C0251AV.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Cypress CY7C0251AV, service manual, brief instructions and user manuals Cypress CY7C0251AV. 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 CY7C0251AV.

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A complete manual for the device Cypress CY7C0251AV, 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 CY7C0251AV by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Cypress CY7C0251AV.

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.

1. Preface and tips on how to use the manual Cypress CY7C0251AV - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Cypress CY7C0251AV, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Cypress CY7C0251AV, that we can find in the current document
3. Tips how to use the basic functions of the device Cypress CY7C0251AV - which should help us in our first steps of using Cypress CY7C0251AV
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Cypress CY7C0251AV
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Cypress CY7C0251AV in a specific country, if it was not possible to solve the problem on our own.

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