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R1QKA3618CBG Datasheet(PDF) 14 Page - Renesas Technology Corp |
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R1QKA3618CBG Datasheet(HTML) 14 Page - Renesas Technology Corp |
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14 / 38 page  PAGE : 14 Rev. 0.09a : 2011.09.14 R1QGA36**CB* / R1QKA36**CB* Series C(t+4) /C(t+3) C(t+3) /C(t+2) RL=2.5 /C(t+3) C(t+3) /C(t+2) C(t+2) RL=2.0 RL*9=1.5 Q(A+3) Q(A+2) Q(A+1) Q(A+0) Output data D(A+3) D(A+2) D(A+1) D(A+0) Input data C(t+3) /C(t+2) C(t+2) /C(t+1) Input clock for Q /K(t+2) K(t+2) /K(t+1) K(t+1) Input clock Data out Data in Standby (Clock stopped) NOP (No operation) Read Cycle: Load address, output read data on two consecutive C and /C rising edges Write Cycle: Load address, input write data on two consecutive K and /K rising edges Operation K Truth Table Notes: 1. H: high level, L: low level, : don’t care, : rising edge. 2. Data inputs are registered at K and /K rising edges. Data outputs are delivered at C and /C rising edges, except if C and /C are high, then data outputs are delivered at K and /K rising edges. 3. /R and /W must meet setup/hold times around the rising edges (low to high) of K and are registered at the rising edge of K. 4. This device contains circuitry that will ensure the outputs will be in high-Z during power-up. 5. Refer to state diagram and timing diagrams for clarification. 6. When clocks are stopped, the following cases are recommended; the case of K = low, /K = high, C = low and /C = high, or the case of K = high, /K = low, C = high and /C = low. This condition is not essential, but permits most rapid restart by overcoming transmission line charging symmetrically. 7. If this signal was low to initiate the previous cycle, this signal becomes a “don’t care” for this operation; however, it is strongly recommended that this signal be brought high, as shown in the truth table. 8. This signal was high on previous K clock rising edge. Initiating consecutive READ or WRITE operations on consecutive K clock rising edges is not permitted. The device will ignore the second request. 9. RL = Read Latency (unit = cycle). L*8 D = or Q = High-Z H H Previous state Stopped L*8 H*7 D or Q /W /R K R10DS0161EJ0009 |
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