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MCM69P618CTQ5 Datasheet(PDF) 5 Page - Motorola, Inc |
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MCM69P618CTQ5 Datasheet(HTML) 5 Page - Motorola, Inc |
5 / 12 page MCM69P618C 5 MOTOROLA FAST SRAM TRUTH TABLE (See Notes 1 through 4) Next Cycle Address Used SE1 SE2 SE3 ADSP ADSC ADV G 3 DQx Write 2, 4 Deselect None 1 X X X 0 X X High–Z X Deselect None 0 X 1 0 X X X High–Z X Deselect None 0 0 X 0 X X X High–Z X Deselect None X X 1 1 0 X X High–Z X Deselect None X 0 X 1 0 X X High–Z X Begin Read External 0 1 0 0 X X X High–Z READ Begin Read External 0 1 0 1 0 X X High–Z READ Continue Read Next X X X 1 1 0 1 High–Z READ Continue Read Next X X X 1 1 0 0 DQ READ Continue Read Next 1 X X X 1 0 1 High–Z READ Continue Read Next 1 X X X 1 0 0 DQ READ Suspend Read Current X X X 1 1 1 1 High–Z READ Suspend Read Current X X X 1 1 1 0 DQ READ Suspend Read Current 1 X X X 1 1 1 High–Z READ Suspend Read Current 1 X X X 1 1 0 DQ READ Begin Write Current X X X 1 1 1 X High–Z WRITE Begin Write Current 1 X X X 1 1 X High–Z WRITE Begin Write External 0 1 0 1 0 X X High–Z WRITE Continue Write Next X X X 1 1 0 X High–Z WRITE Continue Write Next 1 X X X 1 0 X High–Z WRITE Suspend Write Current X X X 1 1 1 X High–Z WRITE Suspend Write Current 1 X X X 1 1 X High–Z WRITE NOTES: 1. X = Don’t Care. 1 = logic high. 0 = logic low. 2. Write is defined as either 1) any SBx and SW low or 2) SGW is low. 3. G is an asynchronous signal and is not sampled by the clock K. G drives the bus immediately (tGLQX) following G going low. 4. On write cycles that follow read cycles, G must be negated prior to the start of the write cycle to ensure proper write data setup times. G must also remain negated at the completion of the write cycle to ensure proper write data hold times. LINEAR BURST ADDRESS TABLE (LBO = VSS) 1st Address (External) 2nd Address (Internal) 3rd Address (Internal) 4th Address (Internal) X . . . X00 X . . . X01 X . . . X10 X . . . X11 X . . . X01 X . . . X10 X . . . X11 X . . . X00 X . . . X10 X . . . X11 X . . . X00 X . . . X01 X . . . X11 X . . . X00 X . . . X01 X . . . X10 INTERLEAVED BURST ADDRESS TABLE (LBO = VDD) 1st Address (External) 2nd Address (Internal) 3rd Address (Internal) 4th Address (Internal) X . . . X00 X . . . X01 X . . . X10 X . . . X11 X . . . X01 X . . . X00 X . . . X11 X . . . X10 X . . . X10 X . . . X11 X . . . X00 X . . . X01 X . . . X11 X . . . X10 X . . . X01 X . . . X00 WRITE TRUTH TABLE Cycle Type SGW SW SBa SBb Read H H X X Read H L H H Write Byte a H L L H Write Byte b H L H L Write All Bytes H L L L Write All Bytes L X X X |
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