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MPC5510 датащи(PDF) 43 Page - Freescale Semiconductor, Inc |
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MPC5510 датащи(HTML) 43 Page - Freescale Semiconductor, Inc |
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43 / 54 page ![]() Electrical Characteristics MPC5510 Microcontroller Family Data Sheet, Rev. 2 Preliminary—Subject to Change Without Notice Freescale Semiconductor 43 2.13.5 External Bus Interface (EBI) Figure 14. CLKOUT Timing Table 23. External Bus Operation Timing1 1 EBI timing specified at VDDE = 3.0V to 5.5V, T A = TL to TH, and CL = 50pF with SIU_PCRn[SRC] = 0b11. Num Characteristic Symbol Min Max Unit 1 CLKOUT Period2 2 Initialize SIU_ECCR[EBDF] to meet maximum external bus frequency. TC 40.0 — ns 2 CLKOUT duty cycle tCDC 45% 55% TC 3 CLKOUT rise time tCRT ——3 3 Refer to Medium High Voltage (MH) pad AC specification in Table 18. ns 4 CLKOUT fall time tCFT ——3 ns 5 CLKOUT Positive Edge to Output Signal Invalid or High Z (Hold Time) tCOH 2.0 — ns 6 CLKOUT Positive Edge to Output Signal Valid (Output Delay) tCOV — 10.0 ns 7 Input Signal Valid to CLKOUT Posedge (Setup Time) tCIS 20.0 — ns 8 CLKOUT Posedge to Input Signal Invalid (Hold Time) tCIH 0— ns 9 ALE Pulse Width High Time tALEPWH 20 — ns 10 ALE Fall to AD Invalid tALEAD 2— ns 1 2 2 3 4 CLKOUT VDDE/2 Vol_f Voh_f |
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