Datasheet STK14CA8C (Infineon) - 6

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STK14CA8C Table 1. Mode Selection CE WE OE A
[1]
16–A0 Mode I/O Power
H X X X Not selected Output high Z Standby L H L X Read SRAM Output data Active L L X X Write SRAM Input data Active L H L 0x4E38 Read SRAM Output data Output Active[2] 0xB1C7 Read SRAM data Output data 0x83E0 Read SRAM Output data Output 0x7C1F Read SRAM data Output data 0x703F Read SRAM 0x8B45 AutoStore disable L H L 0x4E38 Read SRAM Output data Output Active[2] 0xB1C7 Read SRAM data Output data 0x83E0 Read SRAM Output data Output 0x7C1F Read SRAM data Output data 0x703F Read SRAM 0x4B46 AutoStore enable L H L 0x4E38 Read SRAM Output data Output Active I [2] CC2 0xB1C7 Read SRAM data Output data 0x83E0 Read SRAM Output data Output 0x7C1F Read SRAM data Output high Z 0x703F Read SRAM 0x8FC0 Nonvolatile STORE L H L 0x4E38 Read SRAM Output data Output Active[2] 0xB1C7 Read SRAM data Output data 0x83E0 Read SRAM Output data Output 0x7C1F Read SRAM data Output high Z 0x703F Read SRAM 0x4C63 Nonvolatile RECALL
Notes
1. While there are 17 address lines on the STK14CA8C, only the lower 14 are used to control software modes. 2. The six consecutive address locations must be in the order listed. WE must be HIGH during all six cycles to enable a nonvolatile cycle. Document Number: 002-23970 Rev. *A Page 6 of 21 Document Outline 1-Mbit (128K × 8) nvSRAM Features Functional Description Logic Block Diagram Contents Pinout Pin Definitions Device Operation SRAM Read SRAM Write AutoStore Operation Hardware STORE Operation Hardware RECALL (Power-up) Software STORE Software RECALL Preventing AutoStore Data Protection Maximum Ratings Operating Range DC Electrical Characteristics Data Retention and Endurance Capacitance Thermal Resistance AC Test Loads AC Test Conditions AC Switching Characteristics SRAM Read Cycle SRAM Write Cycle Switching Waveforms AutoStore/Power-up RECALL Switching Waveforms Software Controlled STORE/RECALL Cycle Switching Waveforms Hardware STORE Cycle Switching Waveforms Truth Table For SRAM Operations Ordering Information Ordering Code Definitions for Industrial Temperature Ordering Code Definitions for Military Temperature Package Diagram Acronyms Document Conventions Units of Measure Document History Page Sales, Solutions, and Legal Information Worldwide Sales and Design Support Products PSoC® Solutions Cypress Developer Community Technical Support