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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC5121E датащи(PDF) 48 Page - Freescale Semiconductor, Inc |
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MPC5121E датащи(HTML) 48 Page - Freescale Semiconductor, Inc |
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48 / 86 page  MPC5121E/MPC5123 Data Sheet, Rev. 4 Electrical and Thermal Characteristics Freescale Semiconductor 48 Figure 26. PIO Write Mode Timing To fulfill this timing, several parameters need to be observed as shown in Table 3-27. Table 3-27. Timing Parameters PIO Write ATA Parameter PIO Write Mode Timing Parameter Value How to meet SpecID t1 t1 t1(min) = time_1 × T – (tskew1 + tskew2 + tskew5) time_1. 1 1 See the MPC5121e Microcontroller Reference Manual. A9.30 t2 t2r t2(min) = time_2w × T – (tskew1 + tskew2 + tskew5) calculate and programming time_2w. 1 A9.31 t9 t9 t9(min) = time_9 × T – (tskew1 + tskew2 + tskew6) time_9. 1 A9.32 t3 — t3(min) = (time_2w – time_on) × T – (tskew1 + tskew2 + tskew5) If not met, increase time_2w A9.33 t4 t4 t4(min) = time_4 × T – tskew1 calculate and programming time_4. 1 A9.34 tA tA tA = (1.5 + time_ax) × T – (tco + tsui + tcable2 + tcable2 + 2 × tbuf) calculate and programming time_ax. 1 A9.35 t0 — t0(min) = (time_1 + time_2 + time_9) × T time_1, time_2r, time_9 A9.36 — — Avoid bus contention when switching buffer on by making ton long enough — A9.37 — — Avoid bus contention when switching buffer off by making toff long enough — A9.38 ADDR DIOR Write Data (15:0) IORDY IORDY t1 t2r t9 DIOW buffer_en ton tA tB t4 toff t1 |
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