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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8306SEC датащи(PDF) 36 Page - Freescale Semiconductor, Inc |
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MPC8306SEC датащи(HTML) 36 Page - Freescale Semiconductor, Inc |
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36 / 70 page  MPC8306S PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 1 36 Freescale Semiconductor Timers 14 Timers This section describes the DC and AC electrical specifications for the timers of the MPC8306S. 14.1 Timer DC Electrical Characteristics The following table provides the DC electrical characteristics for the MPC8306S timer pins, including TIN, TOUT, TGATE, and RTC_PIT_CLK. 14.2 Timer AC Timing Specifications The following table provides the timer input and output AC timing specifications. The following figure provides the AC test load for the timers. Figure 27. Timers AC Test Load Table 36. Timer DC Electrical Characteristics Characteristic Symbol Condition Min Max Unit Output high voltage VOH IOH =–6.0mA 2.4 — V Output low voltage VOL IOL =6.0 mA — 0.5 V Output low voltage VOL IOL =3.2 mA — 0.4 V Input high voltage VIH —2.0 OVDD +0.3 V Input low voltage VIL —–0.3 0.8 V Input current IIN 0 V VIN OVDD — ±5 A Table 37. Timer Input AC Timing Specifications1 Characteristic Symbol2 Min Unit Timers inputs—minimum pulse width tTIWID 20 ns Notes: 1. Input specifications are measured from the 50% level of the signal to the 50% level of the rising edge of SYS_CLK_IN. Timings are measured at the pin. 2. Timer inputs and outputs are asynchronous to any visible clock. Timer outputs should be synchronized before use by any external synchronous logic. Timer inputs are required to be valid for at least tTIWID ns to ensure proper operation. Output Z0 = 50 OVDD/2 RL = 50 |
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