Instruction/ maintenance manual of the product STK11C88 Cypress Semiconductor
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STK1 1C88 256 Kbit (32K x 8) Sof tS tore nvSRAM Cypress Semiconducto r Corporation • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 001-50591 Rev .
STK1 1C88 Document Number: 001-50591 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.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 3 of 15 Device Operation The STK1 1C88 is a versatile memory chip that provides several modes of operation. The STK1 1C88 can operate as a standard 32K x 8 SRAM. A 32K x 8 array of nonvolatile storage elements shadow the SRAM.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 4 of 15 Hardware Protect The STK1 1C88 offers hardware protection against inad vertent STORE operation and SRAM WRITEs during low voltage conditions. When V CC <V SWITCH , all externally initiated STORE operations and SRAM WRITEs are inhibited.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 5 of 15 T able 2. Software ST OR E/RECALL Mo de Selection CE WE A 13 – A 0 Mode IO Notes L H 0x0E38 0x31C7 0x03E0 0x3C1F 0x303F 0x0FC0 Read SRAM Re.
STK1 1C88 Document Number: 001-50591 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 .
STK1 1C88 Document Number: 001-50591 Rev . ** Page 7 of 15 Cap acit ance In the following table, the capacitance parameters are listed. [4] Parameter Description T est Conditions Max Unit C IN Input Capacit ance T A = 25 ° C, f = 1 MHz, V CC = 0 to 3.
STK1 1C88 Document Number: 001-50591 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 E.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 9 of 15 SRAM Writ e 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 ns t PWE .
STK1 1C88 Document Number: 001-50591 Rev . ** Page 10 of 15 STORE INHIBIT or Power Up RECALL Parameter Alt Description STK1 1C88 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 Level 3.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 1 1 of 15 Sof tware Controlled ST ORE/RECALL Cycle The software controlled ST ORE/RECALL cycle follows.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 12 of 15 Ordering Information Spe e d (ns) Ordering Code Package Diagra m Package T ype Operating Range 25 ST K1 1C88-NF25TR 51-85026 28-Pin SOIC (30.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 13 of 15 Package Diagrams Figure 1 1. 28-Pin (300 mil) SOIC (51 -85026) 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.
STK1 1C88 Document Number: 001-50591 Rev . ** Page 14 of 15 Figure 12. 28-Pin (330 mil) SOIC (51-85 058 ) Package Diagrams (continued) 51-85058-*A [+] Feedback.
Document Number: 001-50591 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 Semiconductor STK11C88 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
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If you already are a holder of Cypress Semiconductor STK11C88, 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 Semiconductor STK11C88.
However, one of the most important roles played by the user manual is to help in solving problems with Cypress Semiconductor STK11C88. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Cypress Semiconductor STK11C88 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
