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STK17T88-RF25TR Datasheet(PDF) 7 Page - Simtek Corporation |
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STK17T88-RF25TR Datasheet(HTML) 7 Page - Simtek Corporation |
7 / 28 page 7 STK17T88 March 2007 Document Control #ML0024 Rev 1.7 SRAM WRITE CYCLES #1 & #2 n ote g: If W is low when E goes low, the outputs remain in the high-impedance state. note h: E or W must be ≥ VIH during address transitions. SRAM WRITE CYCLE #1: W Controlledg,h SRAM WRITE CYCLE #2: E Controlledg,h NO. SYMBOLS PARAMETER STK17T88-25 STK17T88-45 UNITS #1 #2 Alt. MIN MAX MIN MAX 12 tAVAV tAVAV tWC Write Cycle Time 25 45 ns 13 tWLWH tWLEH tWP Write Pulse Width 20 30 ns 14 tELWH tELEH tCW Chip Enable to End of Write 20 30 ns 15 tDVWH tDVEH tDW Data Set-up to End of Write 10 15 ns 16 tWHDX tEHDX tDH Data Hold after End of Write 0 0 ns 17 tAVWH tAVEH tAW Address Set-up to End of Write 20 30 ns 18 tAVWL tAVEL tAS Address Set-up to Start of Write 0 0 ns 19 tWHAX tEHAX tWR Address Hold after End of Write 0 0 ns 20 tWLQZ, tWZ Write Enable to Output Disable 10 15 ns 21 tWHQX tOW Output Active after End of Write 3 3 ns PREVIOUS DATA DATA OUT E ADDRESS 12 tAVAV W 16 tWHDX DATA IN 19 tWHAX 13 tWLWH 18 tAVWL 17 tAVWH DATA VALID 20 tWLQZ 15 tDVWH HIGH IMPEDANCE 21 tWHQX 14 tELWH DATA IN 12 tAVAV 16 tEHDX 13 tWLEH 19 tEHAX 18 tAVEL 17 tAVEH DATA VALID 15 tDVEH HIGH IMPEDANCE 14 tELEH DATA OUT E ADDRESS W DATA IN |
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