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MPC8241EC датащи(PDF) 29 Page - Freescale Semiconductor, Inc |
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MPC8241EC датащи(HTML) 29 Page - Freescale Semiconductor, Inc |
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29 / 58 page ![]() MPC8241 Integrated Processor Hardware Specifications, Rev. 10 Freescale Semiconductor 29 Electrical and Thermal Characteristics Figure 18. PIC Serial Interrupt Mode Output Timing Diagram Figure 19. PIC Serial Interrupt Mode Input Timing Diagram 4.7.1 IEEE 1149.1 (JTAG) AC Timing Specifications Table 15 provides the JTAG AC timing specifications for the MPC8241 while in the JTAG operating mode at recommended operating conditions (see Table 2) with LVDD = 3.3 V ± 0.3 V. Timings are independent of the system clock (PCI_SYNC_IN). Table 15. JTAG AC Timing Specification (Independent of PCI_SYNC_IN) Num Characteristic Min Max Unit Notes TCK frequency of operation 0 25 MHz — 1 TCK cycle time 40 — ns — 2 TCK clock pulse width measured at 1.5 V 20 — ns — 3 TCK rise and fall times 0 3 ns — 4TRST setup time to TCK falling edge 10 — ns 1 5TRST assert time 10 — ns — 6 Input data setup time 5 — ns 2 7 Input data hold time 15 — ns 2 8 TCK to output data valid 0 30 ns 3 9 TCK to output high impedance 0 30 ns 3 10 TMS, TDI data setup time 5 — ns — S_CLK S_RST VM VM VM S_FRAME sys_logic_clk VM VM VM VM 4 3 5 4 6 S_CLK S_INT 7 VM |
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