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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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MPC8306EC датащи(PDF) 47 Page - Freescale Semiconductor, Inc |
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MPC8306EC датащи(HTML) 47 Page - Freescale Semiconductor, Inc |
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47 / 76 page  MPC8306 PowerQUICC II Pro Integrated Communications Processor Family Hardware Specifications, Rev. 0 Freescale Semiconductor 47 JTAG 20.2 JTAG AC Electrical Characteristics This section describes the AC electrical specifications for the IEEE Std. 1149.1 (JTAG) interface of the MPC8306. Table 51 provides the JTAG AC timing specifications as defined in Figure 37 through Figure 40. 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 51. JTAG AC Timing Specifications (Independent of SYS_CLK_IN)1 At recommended operating conditions (see Table 2). Parameter Symbol2 Min Max Unit Notes JTAG external clock frequency of operation fJTG 033.3 MHz — JTAG external clock cycle time t JTG 30 — ns — JTAG external clock pulse width measured at 1.4 V tJTKHKL 11 — ns — JTAG external clock rise and fall times tJTGR, tJTGF 02 ns — TRST assert time tTRST 25 — ns 3 Input setup times: Boundary-scan data TMS, TDI tJTDVKH tJTIVKH 4 4 — — ns 4 Input hold times: Boundary-scan data TMS, TDI tJTDXKH tJTIXKH 10 10 — — ns 4 Valid times: Boundary-scan data TDO tJTKLDV tJTKLOV 2 2 15 15 ns 5 Table 50. JTAG Interface DC Electrical Characteristics (continued) Characteristic Symbol Condition Min Max Unit |
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