Cypress STK11C68 - Manuals - manualsarea.com

Page 3 - Figure 2

STK11C68 Document Number: 001-50638 Rev. ** Page 3 of 16 Device Operation The STK11C68 is a versatile memory chip that provides severalmodes of operation. The STK16C88 can operate as a standard8K x 8 SRAM. A 8K x 8 array of nonvolatile storage elements shadow the SRAM. SRAM data can be copied nonvol...

Page 4 - Best Practices

STK11C68 Document Number: 001-50638 Rev. ** Page 4 of 16 average current drawn by the STK11C68 depends on thefollowing items: ■ The duty cycle of chip enable ■ The overall cycle rate for accesses ■ The ratio of Reads to Writes ■ CMOS versus TTL input levels ■ The operating temperature ■ The V CC lev...

Page 5 - DC Electrical Characteristics

STK11C68 Document Number: 001-50638 Rev. ** Page 5 of 16 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 6 - Capacitance; Thermal Resistance; AC Test Conditions

STK11C68 Document Number: 001-50638 Rev. ** Page 6 of 16 Capacitance In the following table, the capacitance parameters are listed. [3] Parameter Description Test Conditions Max Unit C IN Input Capacitance T A = 25 ° C, f = 1 MHz, V CC = 0 to 3.0V 8 pF C OUT Output Capacitance 7 pF Thermal Resistanc...

Page 7 - AC Switching Characteristics; SRAM Read Cycle; Switching Waveforms

STK11C68 Document Number: 001-50638 Rev. ** Page 7 of 16 AC Switching Characteristics SRAM Read Cycle Parameter Description 25 ns 35 ns 45 ns Unit Min Max Min Max Min Max Cypress Parameter Alt t ACE t ELQV Chip Enable Access Time 25 35 45 ns t RC [4] t AVAV, t ELEH Read Cycle Time 25 35 45 ns t AA [...

Page 8 - SRAM Write Cycle

STK11C68 Document Number: 001-50638 Rev. ** Page 8 of 16 SRAM Write Cycle Parameter Description 25 ns 35 ns 45 ns Unit Min Max Min Max Min Max Cypress Parameter Alt t WC t AVAV Write Cycle Time 25 35 45 ns t PWE t WLWH, t WLEH Write Pulse Width 20 25 30 ns t SCE t ELWH, t ELEH Chip Enable To End of ...

Page 9 - AutoStore INHIBIT or Power Up RECALL; Power up RECALL Duration; Switching Waveform

STK11C68 Document Number: 001-50638 Rev. ** Page 9 of 16 AutoStore INHIBIT or Power Up RECALL Parameter Alt Description STK11C68 Unit Min Max t HRECALL [9] t RESTORE Power up RECALL Duration 550 μ s t STORE t HLHZ STORE Cycle Duration 10 ms V SWITCH Low Voltage Trigger Level 4.0 4.5 V V RESET Low Vo...

Page 11 - Ordering Information; Ordering Code; Commercial; Part Numbering Nomenclature; Lead Finish

STK11C68 Document Number: 001-50638 Rev. ** Page 11 of 16 Ordering Information Speed (ns) Ordering Code Package Diagram Package Type Operating Range 25 STK11C68-SF25TR 001-85058 28-Pin SOIC (330 mil) Commercial STK11C68-SF25 001-85058 28-Pin SOIC (330 mil) STK11C68-SF25ITR 001-85058 28-Pin SOIC (330...

Page 13 - Package Diagrams

STK11C68 Document Number: 001-50638 Rev. ** Page 13 of 16 Package Diagrams Figure 11. 28-Pin (330 Mil) SOIC (51-85058) 51-85058 *A [+] Feedback

Page 16 - Document History Page; Worldwide Sales and Design Support; Change

Document Number: 001-50638 Rev. ** Revised January 30, 2009 Page 16 of 16 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. STK11C68 © Cypress Semicondu...