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MPC8308VMADDA bảng dữ liệu(PDF) 58 Page - Freescale Semiconductor, Inc |
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MPC8308VMADDA bảng dữ liệu(HTML) 58 Page - Freescale Semiconductor, Inc |
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58 / 88 page ![]() MPC8308 PowerQUICC II Pro Processor Hardware Specification, Rev. 0 58 Freescale Semiconductor Timers 16 Timers This section describes the DC and AC electrical specifications for the timers. 16.1 Timers DC Electrical Characteristics Table 45 provides the DC electrical characteristics for the MPC8308 timers pins, including TIN, TOUT, and TGATE. 16.2 Timers AC Timing Specifications Table 46 provides the Timers input and output AC timing specifications. Figure 47 provides the AC test load for the Timers. Figure 47. Timers AC Test Load Table 45. Timers DC Electrical Characteristics Characteristic Symbol Condition Min Max Unit Output high voltage VOH IOH = –8.0 mA 2.4 — V Output low voltage VOL IOL = 8.0 mA — 0.5 V Output low voltage VOL IOL = 3.2 mA — 0.4 V Input high voltage VIH —2.1 NVDD +0.3 V Input low voltage VIL —–0.3 0.8 V Input current IIN 0 V ≤ V IN ≤ NVDD — ± 5 μA Table 46. Timers Input AC Timing Specifications Characteristic Symbol1 Min Unit Timers inputs—minimum pulse width tTIWID 20 ns Notes: 1. Timers inputs and outputs are asynchronous to any visible clock. Timers outputs should be synchronized before use by any external synchronous logic. Timers inputs are required to be valid for at least tTIWID ns to ensure proper operation Output Z0 = 50 Ω NVDD/2 RL = 50 Ω |
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