Motorola ColdFire MCF5281 - Manual (Page 711)

Electrical Characteristics
Freescale Semiconductor 33-27
Figure 33-19. TRST Timing
Figure 33-20. BKPT Timing
33.17 Debug AC Timing Specifications
Table 33-28 lists specifications for the debug AC timing parameters shown in Figure 33-22 .
Figure 33-21 shows real-time trace timing for the values in Table 33-28 .
Table 33-28. Debug AC Timing Specification
Num Characteristic Min Max Units
D1 PST, DDATA to TCLK setup 5 ns
D2 TCLK to PST, DDATA hold 2 ns
D3 DSI-to-DSCLK setup 1 CLKOUT
cycles
D4 1
1
DSCLK and DSI are synchronized internally. D4 is measured from the
synchronized DSCLK input relative to the rising edge of CLKOUT.
DSCLK-to-DSO hold 4 CLKOUT
cycles
D5 DSCLK cycle time 5 CLKOUT
cycles
D6 BKPT input data setup time to
CLKOUT Rise 5.0 ns
D7 BKPT input data hold time to
CLKOUT Rise 2.0 ns
D8 CLKOUT high to BKPT high Z 0.0 10.0 ns
TCLK
TRST
14
13
Input Data Valid
CLKOUT
BKPT
(Input)
V
IL
V
IH
15 16 B1b B2b
17
MCF5282 and MCF5216 ColdFire Microcontroller User’s Manual, Rev. 3