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STK14C88-LF45ITR 데이터시트(PDF) 8 Page - Simtek Corporation |
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STK14C88-LF45ITR 데이터시트(HTML) 8 Page - Simtek Corporation |
8 / 19 page 8 February, 2007 Document Control #ML0014 Rev 0.3 STK14C88 SOFTWARE STORE/RECALL MODE SELECTION SOFTWARE-CONTROLLED STORE/RECALL CYCLEv (VCC = 5.0V ± 10%) e Note r: The six consecutive addresses must be in the order listed. W must be high during all six consecutive cycles to enable a nonvolatile cycle. Note s: While there are 15 addresses on the STK14C88, only the lower 14 are used to control software modes. Note t: I/O state assumes G < VIL. Activation of nonvolatile cycles does not depend on state of G. Note u: The software sequence is clocked with E controlled READs. Note v: The six consecutive addresses must be in the order listed in the Hardware Mode Selection Table: (0E38, 31C7, 03E0, 3C1F, 303F, 0FC0) for a STORE cycle or (0E38, 31C7, 03E0, 3C1F, 303F, 0C63) for a RECALL cycle. W must be high during all six consecutive cycles. SOFTWARE STORE/RECALL CYCLE: E CONTROLLEDv E W A13 - A0 (hex) MODE I/O POWER NOTES LH 0E38 31C7 03E0 3C1F 303F 0FC0 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 Active lCC2 r, s, t LH 0E38 31C7 03E0 3C1F 303F 0C63 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 Active r, s, t NO. SYMBOLS PARAMETER STK14C88-25 STK14C88-35 STK14C88-45 UNITS NOTES Standard Alternate MIN MAX MIN MAX MIN MAX 33 tAVAV tRC STORE/RECALL Initiation Cycle Time 25 35 45 ns n 34 tAVEL tAS Address Set-up Time 0 0 0 ns u 35 tELEH tCW Clock Pulse Width 20 25 30 ns u 36 tELAX Address Hold Time 20 20 20 ns u 37 tRECALL RECALL Duration 20 20 20 μs DATA VALID HIGH IMPEDANCE ADDRESS #6 ADDRESS #1 DATA VALID 33 tAVAV DATA VALID DQ (DATA E ADDRESS 28 37 tSTORE / tRECALL 33 tAVAV 34 tAVEL 35 tELEH 36 tELAX |
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