Cypress STK12C68-5 - Manuals

Page 3 - Figure 3; Figure 3. AutoStore Mode

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 3 of 18 Device Operation The STK12C68-5 nvSRAM is made up of two functional compo-nents paired in the same physical cell. These are an SRAMmemory cell and a nonvolatile QuantumTrap cell. The SRAMmemory cell operates as a standard fas...

Page 4 - Figure 4. AutoStore Inhibit Mode; AutoStore Inhibit Mode; Figure 4; Software STORE

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 4 of 18 Figure 4. AutoStore Inhibit Mode If the power supply drops faster than 20 us/volt before Vccreaches V SWITCH , then a 2.2 ohm resistor must be connected between V CC and the system supply to avoid momentary excess of current ...

Page 5 - Figure 5; Preventing Store

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 5 of 18 4. Read address 0x1FFF, Valid READ 5. Read address 0x10F0, Valid READ 6. Read address 0x0F0E, Initiate RECALL cycle Internally, RECALL is a two step procedure. First, the SRAM datais cleared; then, the nonvolatile information...

Page 6 - Best Practices

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 6 of 18 Best Practices nvSRAM products have been used effectively for over 15years. While ease-of-use is one of the product’s main systemvalues, experience gained working with hundreds of applica-tions has resulted in the following s...

Page 7 - DC Electrical Characteristics

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 7 of 18 Maximum Ratings Exceeding maximum ratings may shorten the useful life of thedevice. These user guidelines are not tested. Storage Temperature ................................. –65 ° C to +150 ° C Temperature under Bias .........

Page 8 - Thermal Resistance; AC Test Conditions

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 8 of 18 Data Retention and Endurance Parameter Description Min Unit DATA R Data Retention 100 Years NV C Nonvolatile STORE Operations 1,000 K Capacitance In the following table, the capacitance parameters are listed. [6] Parameter De...

Page 9 - AC Switching Characteristics; SRAM Read Cycle; Switching Waveforms

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 9 of 18 AC Switching Characteristics SRAM Read Cycle Parameter Description 35 ns 55 ns Unit Min Max Min Max Cypress Parameter Alt t ACE t ELQV Chip Enable Access Time 35 55 ns t RC [7] t AVAV, t ELEH Read Cycle Time 35 55 ns t AA [8]...

Page 10 - SRAM Write Cycle

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 10 of 18 SRAM Write Cycle Parameter Description 35 ns 55 ns Unit Min Max Min Max Cypress Parameter Alt t WC t AVAV Write Cycle Time 35 55 ns t PWE t WLWH, t WLEH Write Pulse Width 25 45 ns t SCE t ELWH, t ELEH Chip Enable To End of W...

Page 14 - Part Numbering Nomenclature; Retention / Endurance

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 14 of 18 Speed:35 - 35 ns55 - 55 ns Package:C = Ceramic 28-pin 300 mil DIP (gold lead finish) Part Numbering Nomenclature STK12C68 - 5 C 35 M Temperature Range: M - Military (-55 to 125°C) K L = Ceramic 28-pin LLC = Ceramic 28-pin 30...

Page 15 - Ordering Information; Ordering Code; Military

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 15 of 18 Ordering Information Speed (ns) Ordering Code Package Diagram Package Type Operating Range 35 STK12C68-5C35M 001-51695 28-pin CDIP (300 mil) Military STK12C68-5K35M 001-51695 28-pin CDIP (300 mil) STK12C68-5L35M 001-51696 28...

Page 16 - Package Diagrams

STK12C68-5 (SMD5962-94599) Document Number: 001-51026 Rev. ** Page 16 of 18 Package Diagrams Figure 15. 28-Pin (300-Mil) Side Braze DIL (001-51695) 001-51695 ** [+] Feedback

Page 18 - Document History Page; Worldwide Sales and Design Support; Rev

Document Number: 001-51026 Rev. ** Revised March 02, 2009 Page 18 of 18 AutoStore and QuantumTrap are registered trademarks of Cypress Semiconductor Corporation. All products and company names mentioned in this document may be the trademarks of their respectiveholders. STK12C68-5 (SMD5962-94599) © C...