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MCM64Z836 Datasheet(PDF) 18 Page - Motorola, Inc |
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MCM64Z836 Datasheet(HTML) 18 Page - Motorola, Inc |
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18 / 34 page  MCM64Z836 •MCM64Z918 18 MOTOROLA FAST SRAM PIPELINED READ/WRITE CYCLE TIMING (See Notes 1 and 2) P Sb l MCM64Z836–7 MCM64Z918–7 225 MHz MCM64Z836–8 MCM64Z918–8 200 MHz MCM64Z836–8.5 MCM64Z918–8.5 166 MHz Ui N Parameter Symbol Min Max Min Max Min Max Unit Notes Cycle Time tKHKH 4.4 — 5 — 6 — ns Clock High Pulse Width tKHKL 1.7 — 2 — 2.4 — ns 3 Clock Low Pulse Width tKLKH 1.7 — 2 — 2.4 — ns 3 Clock Access Time tKHQV — 2.6 — 3 — 3.5 ns Output Enable to Output Valid tGLQV — 2.6 — 3 — 3.5 ns Clock High to Output Active tKHQX1 0.8 — 0.8 — 0.8 — ns 4, 5 Output Hold Time tKHQX 0.7 — 0.7 — 0.7 — ns 4 Output Enable to Output Active tGLQX 0 — 0 — 0 — ns 4, 5 Output Disable to Q High–Z tGHQZ — 2.3 — 3 — 3.5 ns 4, 5 Clock High to Q High–Z tKHQZ 0.8 2.4 1 2.5 1 3 ns 4, 5 Setup Times: Address ADV Data In Write Chip Enable Clock Enable tADKH tLVKH tDVKH tWVKH tEVKH tCVKH 1.3 1.3 1.2 1.3 1.3 1.3 — 1.3 1.3 1.2 1.3 1.3 1.3 — 1.3 1.3 1.2 1.3 1.3 1.3 — ns Hold Times: Address ADV Data In Write Chip Enable Clock Enable tKHAX tKHLX tKHDX tKHWX tKHEX tKHCX 0.5 — 0.5 — 0.5 — ns NOTES: 1. Write is defined as any SBx and SW low. Chip Enable is defined as SE1 low, SE2 high, and SB3 low whenever ADV is low. 2. All read and write cycle timings are referenced from CK or G. 3. In order to reduce test correlation issues and to reduce the effects of application specific input edge rate variations on correlation between data sheet parameters and actual system performance, FSRAM AC parametric specifications are always specified at VDDQ/2. In some design exercises, it is desirable to evaluate timing using other reference levels. Since the maximum test input edge rate is known and is given in the AC test conditions section of the data sheet as 2.5 V/ns, one can easily interpolate timing values to other reference levels. 4. This parameter is sampled and not 100% tested. 5. Measured at ±200 mV from steady state. OUTPUT Z0 = 50 Ω RL = 50 Ω 1.25 V Figure 9. AC Test Loads Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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