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STK15C68-SF25I Datasheet(PDF) 6 Page - Simtek Corporation |
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STK15C68-SF25I Datasheet(HTML) 6 Page - Simtek Corporation |
6 / 10 page STK15C68 March 2006 6 Document Control # ML0009 rev 0.2 SOFTWARE STORE/RECALL MODE SELECTION Note l: The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. SOFTWARE STORE/RECALL CYCLEm, n (VCC = 5.0V ± 10%) Note m: The software sequence is clocked with E controlled READs. Note n: The six consecutive addresses must be in the order listed in the Software STORE/RECALL Mode Selection Table: (0000, 1555, 0AAA, 1FFF, 10F0, 0F0F) for a STORE cycle or (0000, 1555, 0AAA, 1FFF, 10F0, 0F0E) for a RECALL cycle. W must be high during all six consecutive cycles. SOFTWARE STORE/RECALL CYCLE: E Controlledn E W G A12 - A0 (hex) MODE I/O with G Low I/O with G High NOTES L H X 0000 1555 0AAA 1FFF 10F0 0F0F Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Nonvolatile STORE Output Data Output Data Output Data Output Data Output Data Output High Z Output High Z Output High Z Output High Z Output High Z Output High Z Output High Z l L H X 0000 1555 0AAA 1FFF 10F0 0F0E Read SRAM Read SRAM Read SRAM Read SRAM Read SRAM Nonvolatile RECALL Output Data Output Data Output Data Output Data Output Data Output High Z Output High Z Output High Z Output High Z Output High Z Output High Z Output High Z l NO. SYMBOLS PARAMETER STK15C68-25 STK15C68-35 STK15C68-45 UNITS MIN MAX MIN MAX MIN MAX 27 tAVAV STORE/RECALL Initiation Cycle Time 25 35 45 ns 28 tAVEL m Address Set-Up Time 0 0 0 ns 29 tELEH m Clock Pulse Width 20 25 30 ns 30 tELAX g, m Address Hold Time 20 20 20 ns 31 tRECALL RECALL Cycle Duration 20 20 20 μs HIGH IMPEDANCE ADDRESS #6 ADDRESS #1 DATA VALID 27 tAVAV DATA VALID DQ (DATA OUT) E ADDRESS 23 31 tSTORE / tRECALL 27 tAVAV 28 tAVEL 29 tELEH 30 tELAX |
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