Cypress nvSRAM manuals
Computer Equipment > Computer Hardware
When we buy new device such as Cypress nvSRAM we often through away most of the documentation but the warranty.
Very often issues with Cypress nvSRAM begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Computer Hardware Cypress nvSRAM is responsible for and what options to choose for expected result.
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24 pages 890.46 Kb
CY14B102L, CY14B102N 2 Mbit (256K x 8/128K x 16) nvSRAMFeatures20 ns, 25 ns, and 45 ns Access Times Internally organized as 256K x 8 (CY14B102L) or 128K x 16 (CY14B102N)Hands off Automatic STORE on power down with only a small CapacitorSTORE to QuantumTrap nonvolatile elements initiated by software, device pin, or AutoStore on power down Functional Description Logic Block Diagram 2 CY14B102L, CY14B102NDocument #: 001-45754 Rev. *B Page 2 of 24 Pinouts (x8) Top View (not to scale)Top View Figure 1. Pin Diagram - 48 FBGA Figure 2. Pin Diagram - 44 Pin TSOP II 48-FBGA 48-FBGA44-TSOP IIFigure 3. Pin Diagram - 54 Pin TSOP II (x16) 3 Pin DefinitionsPinouts 4 CY14B102L, CY14B102N10 CY14B102L, CY14B102NFigure 7. SRAM Read Cycle #2: CE and OE Controlled[3, 15, 19] Figure 8. SRAM Write Cycle #1: WE Controlled[3, 18, 19, 20] 11 Figure 9. SRAM Write Cycle #2: CE Controlled[3, 18, 19, 20]Figure 10. SRAM Write Cycle #3: BHE and BLE Controlled[3, 18, 19, 20] 12 AutoStore/Power Up RECALLFigure 11. AutoStore or Power Up RECALL 13 Software Controlled STORE/RECALL CycleIn the following table, the software controlled STORE/RECALL cycle parameters are listed.[26, 27] Figure 12. CE and OE Controlled Software STORE/RECALL Cycle[27] Figure 13. Autostore Enable/Disable Cycle 14 CY14B102L, CY14B102NHardware STORE Cycle :ULWHODWFKQRWVHWFigure 14. Hardware STORE Cycle[22] Figure 15. Soft Sequence Processing :ULWHODWFKVHW
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