Cypress.com: Documentation http://www.cypress.com/?app=search&searchType=advanced&id%3D119 AN69061 - Design, Manufacturing, and Handling Guidelines for Cypress Wafer-Level Chip Scale Packages (WLCSP) http://www.cypress.com/?rID=50506 AN69061 provides guidelines for using the Cypress wafer-level chip scale package (WLCSP) on Flexible Printed Circuits (FPC) and rigid Printed Circuit Boards (PCB).

]]> Fri, 14 Dec 2012 00:52:04 -0600 AN4011 - Choosing The Right Cypress Synchronous SRAM http://www.cypress.com/?rID=13042 Cypress currently manufactures several major synchronous SRAM architectures. The purpose of this application note is to provide a means to determine which architecture is right for a particular application. In so doing, a brief description will be supplied concerning each architecture and each will be contrasted by address/data relationships and significant performance characteristics. 

The table below shows the architecture comparison for the different options:                                                                            


Parameter
Std. Sync
NoBLTM
DDR-II/DDR-II+
QDRTM-II/ QDRTM-II+

Data Rate
Single
Single
Double
Double

Data Bus
Common I/O
Common I/O
Common and Separate I/O
Separate I/O

VDD
3.3V/2.5V
3.3V/2.5V
1.8V
1.8V

VDDQ
LVTTL 3.3V/2.5V
LVTTL 3.3V/3.5V
HSTL (1.5V/1.8V)
HSTL (1.5V/1.8V)

Clock Frequency
250 MHz
250 MHz
333 MHz / 550 MHz
333 MHz / 550 MHz
]]> Mon, 24 Sep 2012 05:59:52 -0600 AN4017 - Understanding Temperature Specifications: An Introduction http://www.cypress.com/?rID=12896 The following application note is intended to give the reader a basic understanding of the temperature specifications found in Cypress's product datasheets. There are many factors that affect the thermal operation of a device. This application note provides the reader with enough background to understand the thermal parameters and temperature specifications of the device.   

This document describes the various thermal parameters namely Ambient Temperature (Ta), Case Temperature (Tc), Junction Temperature(Tj), Thermal Resistance, Power Dissipation etc.

Details on calculating Junction Temperature are provided in this application note.

Clicking on the link below provides a tool which enables calculation of the I/O Switching Current (Iddq) for desired frequency, Total Power Consumption and Junction Temperature for Sync SRAMs

http://www.cypress.com/?docID=23984

Please refer to the respective product datasheets to get the Vdd voltage and Idd current used in the formula.

]]> Wed, 08 Aug 2012 23:16:56 -0600 CY6264: 8 K × 8 Static RAM http://www.cypress.com/?rID=13598 8K x 8 Static RAM

Features

  • Temperature Ranges
    • Commercial: 0°C to 70°C
    • Industrial: –40°C to 85°C
    • Automotive-A: –40°C to 85°C
  • High Speed
    • 55 ns
  • CMOS for optimum speed/power
  • Easy memory expansion with CE1, CE2 and OE features
  • TTL-compatible inputs and outputs
  • Automatic power-down when deselected
  • Available in Pb-free 28-lead SNC package
     

Functional Description

The CY6264 is a high-performance CMOS static RAM organized as 8192 words by 8 bits. Easy memory expansion is provided by an active LOW chip enable (CE1), an active HIGH chip enable (CE2), and active LOW output enable (OE) and three-state drivers.

]]> Mon, 30 Jul 2012 03:45:09 -0600 Floating data input on CMOS SRAM http://www.cypress.com/?rID=26539  It is not recommended to leave the CMOS inputs floating. None of the SRAM parts have any internal pullups or pulldowns on the data inputs to have a valid signal when an input is left floating. If the customer does not want to use the datalines for parity, they have to be pulled up or pulled down.

]]> Tue, 13 Mar 2012 06:11:11 -0600 Do Address pins have internal Pull-up or Pull-down circuits? http://www.cypress.com/?rID=26537  There are no pullups or pulldowns on address pins. If the customer doesn't want to use half of the memory, then any one of the address pins can be tied high or low and the remaining can be used to address the part.

]]> Tue, 13 Mar 2012 06:09:13 -0600 Do you have Land Patterns or layouts http://www.cypress.com/?rID=26536  There are no recommended land patterns for any devices, it is recommended that customers refer to the IPC database of land patterns for the same.

 
 

]]> Tue, 13 Mar 2012 06:07:41 -0600 How to Submit Parts for FA http://www.cypress.com/?rID=26532 To request an FA, the customer should contact their local FAE or sales office. These groups are the point-of-contact for a failure analysis (FA). The customer should fill out the FA form that they receive from these groups, and follow the instructions given on the FA form. The can raise a service request on the website in the Failure Analysis catagory. They will be guided from there on.

]]> Tue, 13 Mar 2012 04:47:25 -0600 Moisture Sensitivity Level (MSL) of Cypress Parts http://www.cypress.com/?rID=54061 If you know the Cypress part number: 

1. Go to www.cypress.com.  On the top right, you will see a “Keyword / Part Number” search box (adjacent to “Contact Us.”) 

2. Select the “Part Number” tab above this text box.

3. Type the exact part number, for example CY8C29466-12PVXE.

4. The part number will be listed in the search results page.

5. Click on the part number link (1st column starting from the left). This will open a new web page.

Moisture Sensitivity Level (MSL) can be found by clicking the “Quality & Pb-free Data” link on the top, or by just scrolling down to the Quality & Pb-free Data” section about half way down the page.

All other Quality information for this part number (e.g., RoHS compliance, Lead/Ball Finish, Qualification Reports, IPC reports) can also be found on this web page. 

In case of any questions, or if the information is not available for a particular part number, please create a support case at www.cypress.com/support

If you do not know the Cypress part number: 

1. Go to www.cypress.com.  Browse the different products (“Products” tab on the top navigation menu) by family.

2. Once you choose the relevant product family (e.g., “Clocks and Buffers->Clock Distribution,” “Memory->FIFOs”), scroll down the particular page to get to the “Parametric Product Selector.”

3. Use this tool to find the part number by function/feature, and click on the part number you are interested in. This will lead you directly to step # 5 above.

]]> Thu, 08 Sep 2011 21:22:46 -0600 cross-section drawings and thickness ? http://www.cypress.com/?rID=30989  The cross-section drawings and thickness are internal design rule specs, which are not supposed to be shipped out.

]]> Sun, 26 Jun 2011 08:17:27 -0600 SRAM powerup data output http://www.cypress.com/?rID=26518  On power up, if a read occurs, the memory will put out undefined data, i.e. '1' or '0' or 'X' since nothing was written into those memory locations.

 
 
 
 

]]> Mon, 04 Apr 2011 23:13:44 -0600 tLZOE and tHZOE demystified http://www.cypress.com/?rID=26509 On the first look, it seems that there is a mistake in the datasheet.  But, please note that these parameters are tested at opposite conditions, i.e. tLZOE is tested at high Vcc, low temp and fast corner whereas tHZOE istested at low Vcc, high temp and slow corner as the former is a min. spec.and the latter is a max. spec. So, at any given temperature and voltage, the design is guaranteed such that tHZOE is less than tLZOE to prevent bus contention.

]]> Mon, 04 Apr 2011 23:13:23 -0600 UL94V-0_compliance http://www.cypress.com/?rID=26508  Yes, most of our devices are compliant. However please check with the quality reports for exact information.

]]> Mon, 04 Apr 2011 23:12:46 -0600 Failure In Time (FIT) http://www.cypress.com/?rID=38457 The FIT (Failure in Time) for a particular part is found in the Qualification Report of that part. To locate the Qualification Report please refer to the Knowledge Based article on "Qualification Report (QTP)".

]]> Mon, 04 Apr 2011 23:05:04 -0600 Operation of devices outside specified temperature range http://www.cypress.com/?rID=26529 The Commercial temperature rating on our datasheets guarantee an operation between 0C and 70C.   The Industrial rating on our datasheets guarantee and operation between -40C and 85C. The commercial device(C) is not tested at lower temperatures and the operation at temperatures below 0C is not guaranteed. We do not recommend operation outside of the published temperature ranges, although there is a a probablity that the Cypress device could operate beyond these temperatures. We do not guarentee the performance of the device outside the range.

]]> Sat, 05 Mar 2011 10:47:54 -0600 SRAM models link http://www.cypress.com/?rID=26520 Models can be found on the part number page of the part.

However, the models can be searched on the link given below.
http://www.cypress.com/?app=search&searchType=advanced&keyword=&rtID=114&id=0&applicationID=0&l=0
 
 
 

]]> Sat, 05 Mar 2011 03:07:39 -0600 SRAM tape and reel requirement http://www.cypress.com/?rID=26511

First, the part are sealed on the reel by tape and, although not hermetically sealed, it will offer additional shelf exposure time. However, this time is neither measured nor guaranteed. Second, the tape and reel materials can not withstand the standard bake temperature of 125C. However, if the parts do need to be baked then a lower temperature, but longer time, may be acceptable to reach level moisture content specification. The tape and reel bake requirement is temperature of less than 60C and a time limit of 24hrs.

]]> Sat, 05 Mar 2011 02:37:43 -0600 Criteria for submitting a part for failure analysis http://www.cypress.com/?rID=26507  There are no fixed criteria to determine if the component has to be released for failure analysis.  The customer should determine to the best of their ability that it is a malfunctioning Cypress part(s) that is causing their system failure.

]]> Sat, 05 Mar 2011 02:13:58 -0600 Current (Idd) consumption at -40 and +85 degrees? http://www.cypress.com/?rID=26505  The part consumes the max current at +85degrees (High temperature)

]]> Sat, 05 Mar 2011 02:08:32 -0600 CY7C1021CV33 - IBIS http://www.cypress.com/?rID=17591 Thu, 24 Sep 2009 04:44:20 -0600 Cypress 72-Mbit QDR-II/DDR-II SRAMs http://www.cypress.com/?rID=14681

The 72-Mbit QDR-II/DDR-II SRAMs are similar to QDR/DDR SRAMs in their operation but with some performance improvements. The QDR-II/DDR-II SRAMs include source synchronous free running echo clocks (CQ, /CQ) that enable customers to easily capture data. The QDR-II/DDR-II SRAMs also support 1.5V HSTL interface. The applications are the same as that of QDR SRAMs. The QDR-II/DDR-II SRAMs have a maximum speed of 333MHz with a read latency of 1.5 cycles, with burst lengths of 2 and 4, and are available in an industry standard 165 Ball BGA.

]]> Mon, 14 Sep 2009 11:07:33 -0600 Fab 4 1Meg Fast Asynchronous SRAM, R52FFD-3 technology (CY7C1019BV33/CY7C1021BV33) http://www.cypress.com/?rID=35547 Wed, 22 Apr 2009 08:34:13 -0600 16 Meg MoBL Devices (CY62165DV, CY62167DV, CY62168DV, CY62367DV, CY62177DV30) RAM8NLD-1.8V Technology, Fab4 http://www.cypress.com/?rID=35643 Mon, 23 Feb 2009 00:00:00 -0600 16 Meg MoBL Devices (CY62167D and Family) RAM8NLD-1.8V, GSMC (Fab 5) http://www.cypress.com/?rID=35968 Mon, 23 Feb 2009 00:00:00 -0600 71314V18-Verilog http://www.cypress.com/?rID=17561 Thu, 13 Nov 2008 00:00:00 -0600 CY7C1312V18-Verilog http://www.cypress.com/?rID=17563 Thu, 13 Nov 2008 00:00:00 -0600 R8LD-1.8 Automotive Technology, Fab4 (High Performance CMOS Static SRAM) http://www.cypress.com/?rID=35751 Thu, 20 Oct 2005 00:00:00 -0600 Fab 4 High Performance Static SRAM, R8LD-1.8 (CY62155DV & Family) http://www.cypress.com/?rID=35659 Sun, 27 Jun 2004 00:00:00 -0600 Fab 4 - 1Meg SRAM, R52D-5R Technology, CY7C106B/CY7C1006B/CY7C109B/CY7C1009B/CY7C194/5B/CY7C199C) http://www.cypress.com/?rID=36343 Wed, 17 Sep 2003 00:00:00 -0600 Fab 3 - 64K SRAM rev. L R28 technology CY7C185/186/187/161/162/164/166/CY6264 http://www.cypress.com/?rID=36163 Thu, 31 Jul 2003 00:00:00 -0600 Fab 4 - 256K SRAM R28 Rev. R, low alpha mold. (CY7C194/195/199) http://www.cypress.com/?rID=36175 Thu, 31 Jul 2003 00:00:00 -0600 Fab 4 - 64K x 16 Static RAM, R3 Technology (CY7C1021) http://www.cypress.com/?rID=36214 Thu, 31 Jul 2003 00:00:00 -0600 32 MEG Synchronous SRAM, S17 Technology, Promos Fab in Taiwan http://www.cypress.com/?rID=35583 Mon, 14 Jul 2003 00:00:00 -0600 256K Fast Asynchronous SRAM, CY7C1399B R52D-3 In Fab4 http://www.cypress.com/?rID=35511 Sun, 01 Dec 2002 00:00:00 -0600 Fab 4 - 1 Meg Fast Asynchronous SRAM, R52FD-3 Technology, (CY7C1019BV33/CY7C1021BV33) http://www.cypress.com/?rID=35473 Sun, 01 Dec 2002 00:00:00 -0600 Fab 4 - 256K Fast Asynchronous SRAM, R42HDHA Technology, (CY7C194/CY7C195/CY7C197/CY7C198/CY7C199) http://www.cypress.com/?rID=35487 Sun, 01 Dec 2002 00:00:00 -0600 Fab 4 - 4Meg FCT MoBL SRAM, 2.7V - 3.6V, R52LD-3 Technology, (CY62145V/CY62146V/CY62147V) http://www.cypress.com/?rID=35494 Sun, 01 Dec 2002 00:00:00 -0600 Fab 4 - 512K x 8 Static Ram, 4.5V-5.5V, R52LD-5R Technology (CY62148B) http://www.cypress.com/?rID=35508 Sun, 01 Dec 2002 00:00:00 -0600 Fab 4, 4 Meg MoBL SRAM, R52LD-3 Technology (CY62146V/CY62147V/CY62148B) http://www.cypress.com/?rID=35469 Sun, 01 Dec 2002 00:00:00 -0600 Fab 4 - 32K x 16 SRAM, R3 Technology Qualification http://www.cypress.com/?rID=36210 Fri, 01 Nov 2002 00:00:00 -0600 Fab 4 1/2 Meg,Fast Async SRAM, R52D-5R (CY7C1020B) http://www.cypress.com/?rID=35571 Fri, 01 Nov 2002 00:00:00 -0600 WaferTech - 3Meg 128K x 24 Static RAM, WaferTech .35um Technology, (CY7C1024AV33) http://www.cypress.com/?rID=35497 Tue, 01 May 2001 00:00:00 -0600 Fab 4 - 256K SRAM, R42HD Technology (CY7C194/195/197/199) http://www.cypress.com/?rID=36338 Thu, 01 Jun 2000 00:00:00 -0600 Fab 2 - 256K SRAM, R28 Technology (CY7C191/CY7C192/CY7C194/CY7C195/CY7C196/CY7C197/CY7C199) http://www.cypress.com/?rID=36347 Thu, 01 Apr 1999 00:00:00 -0600 Fab 2 - 64K SRAM, R28 Technology (CY7C185/186/6264/164/166/167 Rev. N) http://www.cypress.com/?rID=36318 Tue, 01 Sep 1998 00:00:00 -0600 Fab 2 - 64K x 4 SRAM, R28 Technology (CY7C194/CY7C195 Rev. R) http://www.cypress.com/?rID=36314 Sat, 01 Aug 1998 00:00:00 -0600 Fab 4 - 1 Meg SRAM (5V), R42HD Technology (CY7C1021/CY7C1019) http://www.cypress.com/?rID=36291 Wed, 01 Jul 1998 00:00:00 -0600 Fab 2 - 13% SHRINK- 256K 7C199R 32K x 8 SRAM (CY7C194/CY7C195/CY7C199) http://www.cypress.com/?rID=36268 Mon, 01 Dec 1997 00:00:00 -0600 256K/512K PROM - P26 Technology http://www.cypress.com/?rID=36200 Thu, 01 May 1997 00:00:00 -0600 Fab 3 - 64K SRAM rev. K R28 technology (CY7C185/186/187/161/162/164/166/CY6264) http://www.cypress.com/?rID=36154 Fri, 01 Dec 1995 00:00:00 -0600 Fab 3 - 64K RAM 2.1 7% shrink (CY7C16x/CY7C18x) http://www.cypress.com/?rID=36116 Tue, 01 Nov 1994 00:00:00 -0600 Fab 2 - RAM21 Hygo (CY7C182) http://www.cypress.com/?rID=36102 Sat, 01 Jan 1994 00:00:00 -0600 Fab 2 - CY7C27x/CY7C28x (CY7C271/274/277/279/285/286/287) http://www.cypress.com/?rID=36100 Wed, 01 Dec 1993 00:00:00 -0600 Fab 3 - 64K (256K chop) (CY7C161/162/164/166/185/186/187) http://www.cypress.com/?rID=36097 Mon, 01 Nov 1993 00:00:00 -0600 Fab 2 - 16x16 PROM (CY7C270/276) http://www.cypress.com/?rID=36094 Sun, 01 Aug 1993 00:00:00 -0600 Fab 2 - 4K/8K PROM20 process (CY7C225A/235A/281A/282A) http://www.cypress.com/?rID=36103 Sun, 01 Aug 1993 00:00:00 -0600 Fab 2 - 16K PROM (CY7C245A/291A/293A) http://www.cypress.com/?rID=36085 Wed, 01 Apr 1992 00:00:00 -0600 Fab 2 - 64K PROM (CY7C261/263/264/266/269) http://www.cypress.com/?rID=36087 Sun, 01 Mar 1992 00:00:00 -0600 Fab 2 - 1K x 4 static RAM (CY7C150) http://www.cypress.com/?rID=36079 Wed, 01 Jan 1992 00:00:00 -0600 Fab 3 - 64K SRAM (CY7C161/162/164/166/185/186/187) http://www.cypress.com/?rID=36083 Wed, 01 Jan 1992 00:00:00 -0600