Instruction/ maintenance manual of the product STK15C88 Cypress
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STK15C88 256 Kbit (32K x 8) PowerS tore nvSRAM Cypress Semiconducto r Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 001-50593 Rev .
STK15C88 Document Number: 001-50593 Rev . ** Page 2 of 15 Pin Configurations Figure 1. Pin Diagram - 28-Pin SOIC T able 1. Pin Defini tions - 28-Pin SOIC Pin Name Alt IO T ype Description A 0 –A 14 Input Address In pu ts. Used to select one of the 32,768 bytes of the nvSRAM.
STK15C88 Document Number: 001-50593 Rev . ** Page 3 of 15 Device Operation The STK15C88 is a versatil e memo ry chip that provides several modes of operation.
STK15C88 Document Number: 001-50593 Rev . ** Page 4 of 15 Hardware Protect The STK15C88 offers hardware protectio n against inadve rtent STORE operation and SRAM WRITEs during low voltage conditions. When V CAP <V SWITCH , all externally i nitiated STORE operations and SRAM WRITEs are inhibited.
STK15C88 Document Number: 001-50593 Rev . ** Page 5 of 15 T able 2. Software STOR E/RECALL Mode Selecti on CE WE A 13 – A 0 Mode IO Notes L H 0x0E38 0x31C7 0x03E0 0x3C1F 0x303F 0x0FC0 Read SRAM Read.
STK15C88 Document Number: 001-50593 Rev . ** Page 6 of 15 Maximum Ratin gs Exceeding maximum ratings may shorten the useful life of the device. These user g uidelines are not tested. S torage T emperature ............. ... ... ... ........... –65 ° C to +150 ° C T emperature under bias .
STK15C88 Document Number: 001-50593 Rev . ** Page 7 of 15 Dat a Retention and Endurance Parameter Description 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.
STK15C88 Document Number: 001-50593 Rev . ** Page 8 of 15 AC Switching Characteristics SRAM Read Cycle Parameter Description 25 ns 45 ns Unit Min Max Min Max Cypress Parameter Alt t ACE t ELQV Chip En.
STK15C88 Document Number: 001-50593 Rev . ** Page 9 of 15 T able 3. SRAM Write Cycle Parameter Description 25 n s 45 ns Unit Min Max Min Max Cypress Parameter Alt t WC t AVAV Write Cycle T ime 25 45 n.
STK15C88 Document Number: 001-50593 Rev . ** Page 10 of 15 AutoS tore or Power Up RECALL Parameter Alt Description STK15C88 Unit Min Max t HRECALL [10] t RESTORE Power up RECALL Duration 550 μ s t STORE [6] t HLHZ STORE Cycle Duration 10 ms V RESET Low V oltage Reset Leve l 3.
STK15C88 Document Number: 001-50593 Rev . ** Page 1 1 of 15 Sof tware Controlled STORE/RECALL Cycle The software controlled ST ORE/RECALL cycle follows.
STK15C88 Document Number: 001-50593 Rev . ** Page 12 of 15 Ordering Information Spe e d (ns) Ordering Code Package Diagra m Package T ype Operating Range 25 STK15C88-NF25TR 51-85026 28-Pin SOIC (300 m.
STK15C88 Document Number: 001-50593 Rev . ** Page 13 of 15 Package Diagrams Figure 1 1. 28-Pin (300 mil) SOIC (51-8502 6) 51 85127 *A PIN 1 ID 0.291[7.39] 0.300[7.62] 0.394[10.01] 0.419[10.64] 0.050[1.27] TYP. 0.092[2.33] 0.105[2.67] 0.004[0.10] 0.0118[0.
STK15C88 Document Number: 001-50593 Rev . ** Page 14 of 15 Figure 12. 28-Pin (330 mil) SOIC (51-85 058 ) Package Diagrams (continued) 51-85058-*A [+] Feedback.
Document Number: 001-50593 Rev . ** Revised January 29, 20 09 Page 15 of 15 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 docum ent may be the trade marks of t heir respe ctive holders.
An important point after buying a device Cypress STK15C88 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Cypress STK15C88 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Cypress STK15C88 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Cypress STK15C88 you will learn all the available features of the product, as well as information on its operation. The information that you get Cypress STK15C88 will certainly help you make a decision on the purchase.
If you already are a holder of Cypress STK15C88, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Cypress STK15C88.
However, one of the most important roles played by the user manual is to help in solving problems with Cypress STK15C88. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Cypress STK15C88 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
