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STK1744-D25 Datasheet(PDF) 6 Page - List of Unclassifed Manufacturers |
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STK1744-D25 Datasheet(HTML) 6 Page - List of Unclassifed Manufacturers |
6 / 12 page STK1744 January 2003 6 Document Control # ML0020 rev 0.0 SOFTWARE STORE/RECALL MODE SELECTION Note k: 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 l: While there are 15 addresses on the STK1744, only the lower 14 are used to control software modes. 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: (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 Controlled E W A13 - A0 (hex) MODE I/O 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 k, l 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 k, l NO. SYMBOLS PARAMETER STK1744-25 STK1744-35 STK1744-45 UNITS MIN MAX MIN MAX MIN MAX 26 tAVAV STORE/RECALL Initiation Cycle Time 25 35 45 ns 27 tAVEL m Address Set-up Time 0 0 0 ns 28 tELEH m Clock Pulse Width 20 25 30 ns 29 tELAX f, m Address Hold Time 20 20 20 ns 30 tRECALL RECALL Duration 20 20 20 µs HIGH IMPEDANCE ADDRESS #6 ADDRESS #1 DATA VALID 26 tAVAV DATA VALID 23 30 tSTORE / tRECALL 26 tAVAV 27 tAVEL 28 tELEH 29 tELAX E ADDRESS DQ (DATA OUT) |
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