Instruction/ maintenance manual of the product STK14C88-5 Cypress Semiconductor
Go to page of 17
STK14C88-5 256 Kbit (32K x 8) AutoS tore nvSRAM Cypress Semiconductor Corpora tion • 198 Champion Court • San Jose , CA 95134-1709 • 408-943-2600 Document Number: 001-51038 Rev .
STK14C88-5 Document Number: 001-51038 Rev . ** Page 2 of 17 Pin Configurations Pin Definitions Pin Name Alt IO T ype Description A 0 –A 14 Input Address Inp uts . Used to select one of the 32,768 bytes of the nvSRAM. DQ 0 -DQ 7 Input or Output Bidirectio na l Data IO Lines .
STK14C88-5 Document Number: 001-51038 Rev . ** Page 3 of 17 Device Operation The STK14C88-5 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.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 4 of 17 Hardware STORE (HSB ) Operation The STK14C88-5 provides the HSB pin for cont rolling an d acknowledging the STORE operations.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 5 of 17 Dat a Protection The STK14C88-5 protects data from corruption during low voltage conditions by inhibiting all externally in itiated STORE and WRITE operations. The l ow voltage condition is detected when V CC is less than V SWITCH .
STK14C88-5 Document Number: 001-51038 Rev . ** Page 6 of 17 Best Practices nvSRAM products have been used effectively for over 15 years. While ease of use is one of t he product’s main system values.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 7 of 17 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 .
STK14C88-5 Document Number: 001-51038 Rev . ** Page 8 of 17 Cap acit ance In the following table, the capacitance parameters are listed. [8] Parameter Description T est Condition s Max Unit C IN Input Capacit ance T A = 25 ° C, f = 1 MHz, V CC = 0 to 3.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 9 of 17 AC Switching Characteristics SRAM Read Cycle Parameter Description 35 ns 45 ns Unit Min Max Min Max Cypress Parameter Alt t ACE t ELQV Chip .
STK14C88-5 Document Number: 001-51038 Rev . ** Page 10 of 17 SRAM Write Cycle Parameter Description 35 ns 45 ns Unit Min Max Min Max Cypress Parameter Alt t WC t AVAV W rite Cycle T ime 35 45 ns t PWE.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 1 1 of 17 AutoS tore or Power Up RECALL Parameter Alt Description STK14C88-5 Unit Min Max t HRECALL [15] t REST ORE Power up RECALL Duration 550 μ .
STK14C88-5 Document Number: 001-51038 Rev . ** Page 12 of 17 Sof tware Controlled STORE/RECALL Cycle The software controlled ST ORE/RECALL cycle follows.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 13 of 17 Hardware STORE Cycle Parameter Alt Description STK14C88-5 Unit Min Max t DHSB [16, 20] t RECOVER, t HHQX Hardware STORE High to Inhibit Off 700 ns t PHSB t HLHX Hardware STORE Pulse Width 15 ns t HLBL Hardware ST ORE Low to ST ORE Busy 300 ns Switching W aveforms Figure 14.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 14 of 17 Ordering Information Spe e d (ns) Ordering Code Package Diagram Package T ype Operating Range 35 STK14C88-5C35M 001-51694 32-pi n CDIP (300.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 15 of 17 Package Diagram Figure 15. 32-Pin (300-Mil) Side Braze DIL (001-51694) 001-51694 ** [+] Feedback.
STK14C88-5 Document Number: 001-51038 Rev . ** Page 16 of 17 Figure 16. 32-Pad (450-Mil) LCC (51-80068) Package Diagram (continued) 51-80068- ** [+] Feedback.
Document Number: 001-51038 Rev . ** Revised March 02, 2009 Page 17 of 17 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.
An important point after buying a device Cypress Semiconductor STK14C88-5 (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 Semiconductor STK14C88-5 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 Semiconductor STK14C88-5 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Cypress Semiconductor STK14C88-5 you will learn all the available features of the product, as well as information on its operation. The information that you get Cypress Semiconductor STK14C88-5 will certainly help you make a decision on the purchase.
If you already are a holder of Cypress Semiconductor STK14C88-5, 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 STK14C88-5.
However, one of the most important roles played by the user manual is to help in solving problems with Cypress Semiconductor STK14C88-5. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Cypress Semiconductor STK14C88-5 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
