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MPC850 Datasheet(PDF) 39 Page - Freescale Semiconductor, Inc |
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MPC850 Datasheet(HTML) 39 Page - Freescale Semiconductor, Inc |
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39 / 72 page  MPC850 PowerQUICC™ Integrated Communications Processor Hardware Specifications, Rev. 2 Freescale Semiconductor 39 IEEE 1149.1 Electrical Specifications Figure 33 provides the reset timing for the debug port configuration. Figure 33. Reset Timing—Debug Port Configuration 7 IEEE 1149.1 Electrical Specifications Table 12 provides the JTAG timings for the MPC850 as shown in Figure 34 to Figure 37. Table 12. JTAG Timing Num Characteristic 50 MHz 66MHz 80 MHz Unit Min Max Min Max Min Max J82 TCK cycle time 100.00 — 100.00 — 100.00 — ns J83 TCK clock pulse width measured at 1.5 V 40.00 — 40.00 — 40.00 — ns J84 TCK rise and fall times 0.00 10.00 0.00 10.00 0.00 10.00 ns J85 TMS, TDI data setup time 5.00 — 5.00 — 5.00 — ns J86 TMS, TDI data hold time 25.00 — 25.00 — 25.00 — ns J87 TCK low to TDO data valid — 27.00 — 27.00 — 27.00 ns J88 TCK low to TDO data invalid 0.00 — 0.00 — 0.00 — ns J89 TCK low to TDO high impedance — 20.00 — 20.00 — 20.00 ns J90 TRST assert time 100.00 — 100.00 — 100.00 — ns J91 TRST setup time to TCK low 40.00 — 40.00 — 40.00 — ns J92 TCK falling edge to output valid — 50.00 — 50.00 — 50.00 ns J93 TCK falling edge to output valid out of high impedance — 50.00 — 50.00 — 50.00 ns J94 TCK falling edge to output high impedance — 50.00 — 50.00 — 50.00 ns J95 Boundary scan input valid to TCK rising edge 50.00 — 50.00 — 50.00 — ns J96 TCK rising edge to boundary scan input invalid 50.00 — 50.00 — 50.00 — ns CLKOUT SRESET DSCK, DSDI R70 R82 R80 R80 R81 R81 |
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