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GS81282Z18GB-400I Arkusz danych(PDF) 9 Page - GSI Technology |
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GS81282Z18GB-400I Arkusz danych(HTML) 9 Page - GSI Technology |
9 / 35 page Synchronous Truth Table Operation Address Used State Diagram Key E1 E2 E3 ADSP ADSC ADV W DQ3 Deselect Cycle, Power Down None X L X H X L X X High-Z Deselect Cycle, Power Down None X L L X X L X X High-Z Deselect Cycle, Power Down None X L X H L X X X High-Z Deselect Cycle, Power Down None X L L X L X X X High-Z Deselect Cycle, Power Down None X H X X X L X X High-Z Read Cycle, Begin Burst External R L H L L X X X Q Read Cycle, Begin Burst External R L H L H L X F Q Write Cycle, Begin Burst External W L H L H L X T D Read Cycle, Continue Burst Next CR X X X H H L F Q Read Cycle, Continue Burst Next CR H X X X H L F Q Write Cycle, Continue Burst Next CW X X X H H L T D Write Cycle, Continue Burst Next CW H X X X H L T D Read Cycle, Suspend Burst Current X X X H H H F Q Read Cycle, Suspend Burst Current H X X X H H F Q Write Cycle, Suspend Burst Current X X X H H H T D Write Cycle, Suspend Burst Current H X X X H H T D Notes: 1. X = Don’t Care, H = High, L = Low 2. E = T (True) if E2 = 1 and E1 = E3 = 0; E = F (False) if E2 = 0 or E1 = 1 or E3 = 1 3. W = T (True) and F (False) is defined in the Byte Write Truth Table preceding. 4. G is an asynchronous input. G can be driven high at any time to disable active output drivers. G low can only enable active drivers (shown as “Q” in the Truth Table above). 5. All input combinations shown above are tested and supported. Input combinations shown in gray boxes need not be used to accomplish basic synchronous or synchronous burst operations and may be avoided for simplicity. 6. Tying ADSP high and ADSC low allows simple non-burst synchronous operations. See BOLD items above. 7. Tying ADSP high and ADV low while using ADSC to load new addresses allows simple burst operations. See ITALIC items above. GS81282Z18/36(GB/GD) Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. Rev: 1.01 5/2017 9/34 © 2015, GSI Technology |
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Podobny opis - GS81282Z18GB-400I |
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